Jojeni Investments Pty Ltd v Mosman Municipal Council

Solicitors: Hones La Hood (Appellant) Pikes & Verekers (Respondent) File Number(s): 2014/245017 Decision under appeal Court or tribunal: Land and Environment Court of New South Wales Jurisdiction: Class 4 Citation: [2014] NSWLEC 120 Date of Decision: 08 August 2014 Before: Sheahan J File Number(s): 2013/40512

[Note: The Uniform Civil Procedure Rules 2005 provide (Rule 36.11) that unless the Court otherwise orders, a judgment or order is taken to be entered when it is recorded in the Court's computerised court record system. Setting aside and variation of judgments or orders is dealt with by Rules 36.15, 36.16, 36.17 and 36.18. Parties should in particular note the time limit of fourteen days in Rule 36.16.] HEADNOTE [This headnote is not to be read as part of the judgment] In 1933, Mosman Municipal Council approved building alteration works to convert a two storey house located at 7 Arbutus St, Mosman into two flats. The terms of that approval could not be located. The building alteration works appear to have been completed by around October 1933, and for the following 80 years, the building has been continuously used as two separate residences. While the land is now zoned "R2 Low Density Residential" under the Mosman Local Environmental Plan 2012, such that residential flat buildings are prohibited, it was common ground that the use of the building as two flats after the completion of the building works in 1933 was a lawful "existing use" within the meaning of Div 10 of Pt 4 of the Environmental Planning and Assessment Act 1979 (NSW). The appellant has applied to demolish the existing building at 7 Arbutus St, and to construct a building containing three flats. As the appellant's proposed development is prohibited on land zoned R2, its application turns upon its existing use rights. The appellant sought a declaration, in proceedings in Class 4 of the jurisdiction of the Land and Environment Court, that its land "has the benefit of existing use rights as a residential flat building". The primary judge accepted the Council's proposed alternative formulation, and made a declaration that the land "has the benefit of existing use rights as two flats in a house". The appellant appealed from that declaration. Held by Leeming JA, Macfarlan JA and Gleeson JA agreeing, allowing the appeal:

1. In 1933, it was possible for the owner of the Arbutus St property, which had been used as a single residence, to use the property as two residences without any approval from Council. Council's approval was only required in 1933 because of the structural alterations which were sought to be made: at [2], [50].
2. Consideration of former legislation and planning instruments applicable: at [33]-[44].
3. Secondary evidence may be used to identify the terms of a written approval which is not presently able to be found: at [45]. North Sydney Municipal Council v Boyts Radio & Electrical Pty Ltd (1989) 16 NSWLR 50, referred to
4. A use must be for a purpose. That purpose is not concerned with the nature of the buildings that will be used to serve that purpose: at [52]-[53]. Ashfield Municipal Council v Armstrong [2002] NSWCA 269; 122 LGERA 105, Abret Pty Ltd v Wingecarribee Shire Council [2011] NSWCA 107; 180 LGERA 343, discussed
5. The definition of "existing use" in s 106 of the Environmental Planning and Assessment Act distinguishes between a use which was for a lawful purpose which became prohibited, and a use for which development consent was obtained which became prohibited. The former category of uses did not require development consent; the latter are uses which were lawful only because consent had been obtained: at [11]. Steedman v Baulkham Hills Shire Council [No 2] (1993) 31 NSWLR 562 at 578, applied; Woolworths Ltd v Pallas Newco Pty Ltd [2004] NSWCA 422; 61 NSWLR 70, referred to
6. The source of the entitlement for the building to be used for the lawful purpose of two flats after 1933 was not the 1933 approval to modify the existing structure, but rather was the fact that it had been lawfully used for residential purposes for many years prior: at [2], [69]-[70]. The use of the building as modified for residential purposes therefore answers the description of an "existing use" under s 106(a), not (b), of the Environmental Planning and Assessment Act: at [70].
7. It is generally wrong to construe an Act by reference to delegated legislation made pursuant to it. However, in certain circumstances, it is permissible to conclude that an identical term in a new Act bears the meaning it was given in pre-existing delegated legislation - to do so is no more than to read the Act and the delegated legislation together so as to identify the nature of the scheme: at [40]. Master Education Services Pty Ltd v Ketchell [2008] HCA 38; 236 CLR 101, applied Plaintiff M47/2012 v Director-General of Security [2012] HCA 46; 251 CLR 1, referred to
8. The nature of the appellant's existing use rights does not turn on the ordinary construction of the terms of a development consent: at [71]. Shire of Perth v O'Keefe [1964] HCA 37; 110 CLR 529, applied Botany Bay City Council v Parangool Pty Ltd [2009] NSWLEC 198, MM & SW Enterprises Pty Ltd v Strathfield Council [2010] NSWLEC 8; 172 LGERA 125, distinguished Ashfield Municipal Council v Armstrong [2002] NSWCA 269; 122 LGERA 105, Woollahra Municipal Council v Banool Developments Pty Ltd (1973) 129 CLR 138, considered
9. The proposition in Botany Bay City Council v Workmate Abrasives Pty Ltd (2004) 138 LGERA 120 that the reasoning in Shire of Perth v O'Keefe [1964] HCA 37; 110 CLR 529 is "irrelevant" where an existing use is claimed to flow from an existing development consent does not apply to a case where a development consent is silent as to use and purpose. In such a case, it is not foreign to the task required by the legislation to apply the principles of characterisation directed to identifying the appropriate level of particularity or generality: at [72]-[73]. Botany Bay City Council v Workmate Abrasives Pty Ltd (2004) 138 LGERA 120, considered and explained
10. The appropriate characterisation of existing use rights is not determined by a meticulous examination of the details of the activities undertaken on the land, but rather by having regard to the purpose served by those activities: at [5]-[6], [75]. Shire of Perth v O'Keefe [1964] HCA 37; 110 CLR 529 at 535, Abret Pty Ltd v Wingecarribee Shire Council [2011] NSWCA 107; 180 LGERA 343 at [51], applied
11. The use should be characterised as liberally as the statutory language in its context allows, however the level of generality is not so general that the characterisation can embrace activities, transactions or processes which differ in kind from the use which the activities as a class have made of the land: at [75]-[76]. Dorrestijn v South Australian Planning Commission (1984) 59 ALJR 105 at 108; Royal Agricultural Society of New South Wales v Sydney City Council (1987) 61 LGRA 305 at 310, applied
12. In characterising an existing use, attention should be focused on the town-planning purpose for which the determination is being made: at [76], [84]. North Sydney Municipal Council v Boyts Radio & Electrical Pty Ltd (1989) 16 NSWLR 50 at 59, Grace v Thomas Street Café Pty Ltd [2007] NSWCA 359; (2007) 159 LGERA 57 at [69], applied
13. The use of a building for the purpose of three flats is not "different in kind" from its use as a building for the purpose of two flats: at [78]. Royal Agricultural Society of New South Wales v Sydney City Council (1987) 61 LGRA 305, applied
14. Consideration of the relevance of the particularity of the legislative regime in evaluating the appropriate level of generality with which to characterise an existing use: at [79]-[83]. Woollahra Municipal Council v Banool Developments Pty Ltd (1973) 129 CLR 138, considered and applied
15. The appropriate declaration of existing use is as a "building containing flats": at [3], [6], [77], [90].
16. Section 109B of the Environmental Planning and Assessment Act is subordinate to s 106, and does not subtract from the class of uses which are defined to be "existing uses" by s 106. Rather, it provides an additional immunity for carrying out development: at [103]-[104], [106]. Institute of Patent Agents v Lockwood [1894] AC 347 at 360, Project Blue Sky Inc v Australian Broadcasting Authority [1998] HCA 28; 194 CLR 355 at [70], applied Currency Corporation Pty Ltd v Wyong Shire Council [2006] NSWLEC 692; 155 LGERA 230 at [47]-[61], approved Caltex Australia Petroleum Pty Ltd v Manly Council [2007] NSWLEC 105; 155 LGERA 255, disapproved

Judgment

1. MACFARLAN JA: I agree with Leeming JA.
2. The 1933 approval of which there was evidence was a building approval. Its existence did not suggest that there had been a prior development approval, nor did it define the purpose for which the altered building could be used. Rather, it identified the nature of the alterations that could be made to the existing building. Both the building's use (as a dwelling) prior to the 1933 alterations and its use after the alterations (as a flat building) were lawful under the law in force at that time because the uses were for residential purposes. Development consent was not required.
3. To resolve the present appeal it is necessary to characterise the property's use from 1933 until the present to determine the nature of the existing use rights to which the appellant is entitled. There is no development consent to affect that characterisation and the building approval for the change in the physical characteristics of the building is not determinative. For the reasons given by Leeming JA, it should be concluded that since 1933 the building has been used as a building containing flats and that the appellant's existing use rights correspond to that characterisation. The more particular characterisation contended for by the Council, involving a reference to two flats, would not conform with the High Court's reasoning in Shire of Perth v O'Keefe [1964] HCA 37; 110 CLR 529 and Woollahra Municipal Council v Banool Developments Pty Ltd [1973] HCA 65; 129 CLR 138.
4. GLEESON JA: I agree with Leeming JA.
5. Stripped of its historical complexities, the "existing use" question in the present case was not concerned with the activities of a particular business or industry, or with land used for activities, processes or transactions of widely differing kinds. Here, the only relevant activity conducted on the land was the use of the building as two flats. Approval to convert the existing building into two flats was given in 1933. At all times after 1933 that use was lawful as an "existing use", notwithstanding subsequent planning instruments prohibiting residential flat buildings on the land where the subject premises stand.
6. As a matter of ordinary language, the appropriate designation of the purpose being served by the use of the premises is for the reasons given by Leeming JA, a building containing "flats", rather than a building containing two flats. The former description best describes the activities in question. The latter and more particular characterisation is too narrow, because it focuses upon the detailed activities which have taken place, that is, the number of flats. Authority does not support such a narrow approach to characterising the purpose of an "existing use": see the High Court authorities referred to by Macfarlan JA at [3]. See also Royal Agricultural Society of New South Wales v Sydney City Council (1987) 61 LGRA 305 at 310-311 (McHugh JA; Hope and Samuels JJA agreeing); and North Sydney Municipal Council v Boyts Radio & Electrical Pty Ltd (1989) 16 NSWLR 50 at 50-60 (Kirby P; Samuels and Priestley JJA agreeing).
7. LEEMING JA: In the early years of the twentieth century, a two storey house was built on Arbutus Street in the Municipality of Mosman in Sydney. The land drops away steeply from the street, so much so that a basement which is below street level may be entered directly from the backyard. Council approved building alteration works to the house in 1933 to convert it into two flats. That occurred, and for the following 80 years, the building has been used as two separate residences.
8. The land is now zoned "R2 Low Density Residential" under the Mosman Local Environmental Plan 2012. In that zone, dwelling-houses are permitted with consent but residential flat buildings are prohibited. In the 2012 LEP, "residential flat building" is defined to mean "a building containing 3 or more dwellings, but does not include an attached dwelling or multi dwelling housing". The LEP also defines "dual occupancy (attached)" to mean "2 dwellings on one lot of land that are attached to each other, but does not include a secondary dwelling". There is also a category "dual occupancy (detached)". Both forms of dual occupancy are prohibited in land zoned R2.
9. Nevertheless, it has at all times been common ground that the use of the building as two flats was lawful after 1933. On any view, that use is an "existing use" within the meaning of Div 10 of Pt 4 of the Environmental Planning and Assessment Act 1979 (NSW). Section 106 defines "existing use": "In this Division, 'existing use' means: (a) the use of a building, work or land for a lawful purpose immediately before the coming into force of an environmental planning instrument which would, but for Division 4 of this Part, have the effect of prohibiting that use, and (b) the use of a building, work or land: (i) for which development consent was granted before the commencement of a provision of an environmental planning instrument having the effect of prohibiting the use, and (ii) that has been carried out, within one year after the date on which that provision commenced, in accordance with the terms of the consent and to such an extent as to ensure (apart from that provision) that the development consent would not lapse."
10. The parties' agreement had and has the potential to obscure the complexity of the legal position. That is because the definition and the substantive provisions in Div 10 of Pt 4 operate more subtly than may at first appear. First, they do not operate retrospectively: Steedman v Baulkham Hills Shire Council [No 2] (1993) 31 NSWLR 562 at 578. Instead, the definition of "environmental planning instrument" picks up not merely the 2012 LEP, but also the "former planning instruments" referred to in Sch 3 of the Miscellaneous Acts (Planning) Repeal and Amendment Act 1979 (NSW), which, as will be seen below, include the Cumberland Planning Scheme Ordinance 1951 and Local Environmental Plans made in 1982 and 1998. As Handley JA explained in Steedman at 578-579, it is sometimes necessary to determine whether, at each of the dates each environmental planning instrument commenced, the existing use continued (see for example Council of the City of Sydney v Wilson Parking Australia Pty Ltd [2015] NSWLEC 42 at [186]-[229]). Happily, that is not an inquiry that is required in the present case, because the Council accepted (in accordance with information in historical electoral rolls) that the use of the building for two flats was continuous throughout the period.
11. Secondly, and importantly for this appeal, the definition of "existing use" distinguishes between a use which was for a lawful purpose which became prohibited, and a use for which development consent was obtained which became prohibited. The former category of uses did not require development consent: Steedman at 569 and 580; the latter are uses which were lawful only because consent had been obtained. It may be seen that the definition thereby picks up the "conventional threefold structure", seen most clearly now in ss 76, 76A and 76B of the Environmental Planning and Assessment Act, to which Spigelman CJ referred in Woolworths Ltd v Pallas Newco Pty Ltd [2004] NSWCA 422; 61 NSWLR 707 at [2].
12. A series of deeming provisions caused the 1933 approval by Council under s 314 of the Local Government Act 1919 (NSW) to be taken to be a development consent under the Environmental Planning and Assessment Act. That in turn meant that the second limb of the definition was capable of being engaged, if it could be established that there was a use for which the 1933 approval was granted. This was at the forefront of Council's submissions.
13. However, the definition of existing use might also be engaged through the first limb of the definition, if the correct analysis were that consent were not required for the use of the building as two flats, as opposed to the construction work to effect its conversion from a dwelling-house to two flats. I have concluded that this is central to the approach to be taken to resolve this appeal.

The background to the litigation

1. The appellant owns the land known as 7 Arbutus St. It has applied to demolish the existing building and construct a building containing three flats, with basement parking. The respondent Council refused the application, and there is a pending appeal in Class 1 of the jurisdiction of the Land and Environment Court which was adjourned in light of this proceeding.
2. The appellant's proposed development is prohibited on land zoned R2, and so its application turns upon its existing use rights under Div 10 of Pt 4 Environmental Planning and Assessment Act. There is a dispute about the quality of those rights.
3. The Environmental Planning and Assessment Act expressly authorises regulations for or with respect to the change of an existing use to another use and the "enlargement or expansion or intensification of an existing use": s 108(1)(b) and (c). The regulation-making power has been exercised, and the regulations so made are the "incorporated provisions", which are taken to be incorporated in every environmental planning instrument (s 108(2)) and which, speaking generally, prevail over any provisions which would derogate from them (s 108(3)). The incorporated provisions are found in Pt 5 of the Environmental Planning and Assessment Regulation 2000. That Part contains regulations permitting the enlargement, expansion or intensification of, and changes to, existing uses. In all such cases, development consent is required. However, the regulations distinguish between an enlargement, expansion or intensification of an existing use on the one hand, and a change of an existing use to another use, on the other. An enlargement, expansion or intensification "must be for the existing use and for no other use": reg 42(2)(a). A change to another use may occur "only if that other use is a use that may be carried out with or without development consent under the Act": reg 41(1)(d).
4. The appellant sought a declaration, in separate proceedings in Class 4 of the jurisdiction of the Land and Environment Court, that its land "has the benefit of existing use rights as a residential flat building". However, the primary judge accepted the Council's proposed alternative formulation, and made a declaration that the land "has the benefit of existing use rights as two flats in a house": Jojeni Investments Pty Ltd v Mosman Municipal Council [2014] NSWLEC 120. The appellant appeals from that declaration as of right, pursuant to s 58 of the Land and Environment Court Act 1979 (NSW).
5. As Basten JA said in Calleja v Botany Bay City Council [2005] NSWCA 337; 142 LGERA 104 at [43], the answer to a dispute about an existing use often depends on the level of particularity or generality with which the use is identified. This litigation provides a further example. But it may be seen that the dispute as to the appropriate terms of the declaration of existing use rights goes directly to the question of power to approve the appellant's development application. If the development application is merely an "enlargement or expansion or intensification" of the existing use, then so long as it is "for the existing use and for no other use" the Council (and the Land and Environment Court on appeal) is empowered to grant consent to it. Of course, consent may alternatively be refused, or granted subject to conditions, depending on the application's merits (which are not before this Court). If however the development application involves a change of use, then, because it amounts to a residential flat building which is prohibited in zone R2, the Council lacks power to grant consent (as does the Land and Environment Court on appeal). Because the question is one of power, which may be dispositive of the Class 1 proceedings, it was appropriate that it be determined separately (the same course was taken in Woollahra Municipal Council v Banool Developments Pty Ltd (1973) 129 CLR 138: see at 141).
6. The nature of the underlying legal problem is readily exposed by considering two examples analogous to those advanced in oral submissions by the appellant. Suppose in 1923 approval had been granted to erect a block of eight flats. As a matter of first impression, it would seem likely that the provisions of reg 41(1)(a) and (b) for the alteration, extension, enlargement, expansion or intensification of the use would permit an application in 2015 to demolish and rebuild a block of seven flats, or for that matter nine flats. A building constructed so as to accommodate seven flats, or nine flats, would not appear to be a "change of use", and would appear to be "for the existing use and for no other use" within the meaning of regs 41 and 42 of the current Regulation.
7. Conversely, suppose in 1923 approval had been granted to demolish the existing structure and build a new building, to be used as a single residence. Once again, as a matter of first impression, it would seem likely that regs 41 and 42 would not permit an application to demolish and rebuild a block of two or more flats.
8. The reason for the different outcomes is that as a matter of the "ordinary use of language" and as a matter of what is "likely to appeal to practical minds as appropriate in the application of town-planning legislation" (both phrases are used by Kitto J in Shire of Perth v O'Keefe (1964) 110 CLR 529 at 535), there is no meaningful distinction in the use of buildings containing seven, eight or nine flats, but there is a clear and material distinction between the use of a building for a single residence and for two or more residences.
9. The present case is intermediate. Whether there is a change of use, or merely an enlargement, expansion or intensification of the same use, when a building containing two flats is replaced by a building containing three flats is far from obvious, at least to my mind. That is the first reason for its difficulty.
10. Two additional considerations exacerbate the difficulty of this appeal. The first is that the terms of Council's 1933 approval cannot be located and must be inferred from the documents which survive. The second is that the planning regime in 1933 was quite different from the current regime. In particular, the regime in 1933 drew no distinction between a residential flat building containing two flats, and one containing three flats; the opposite is true today.

The reasons of the primary judge

1. The reasons of the primary judge were concise. His Honour noted the concessions that an approval had been lawfully granted, and that the property had operated continuously thereafter as two separate residences, sharing a basement laundry and service area: at [12]. His Honour noted that while the current use was prohibited under the current LEP, it was lawful in view of existing use rights, and that there was a dispute as to the nature of those rights, and in particular as to whether those rights extended to more than "2 flats in a building": at [17]-[22]. His Honour then briefly recorded the parties' submissions.
2. The dispositive portion of his Honour's reasons was at [35]-[42]. In accordance with Botany Bay City Council v Workmate Abrasives Pty Ltd (2004) 138 LGERA 120, his Honour regarded the so-called "genus test" for existing uses as inapplicable because the use was dependent upon an historical building consent. His Honour referred to the application of that decision in two first instance decisions where a development consent specified a particular use, to which I return below. His Honour then concluded at [41]-[42] that: "The approved plans (Exhibit R2) show approval for the conversion of a dwelling house into two flats, often known as a 'duplex'. Approval was not given for 'flats' generally, or for a RFB, as defined and understood (see [3] above). The lawful purpose is, therefore, for two flats, and this is the purpose that is preserved under the EPA Act."
3. His Honour accordingly limited the declaration to a use which conformed to the approved plans and the description of the application in the building register. Although his Honour described the surviving contemporaneous documents, he made no finding as to the terms of Council's 1933 approval. Nor did his Honour refer to the planning regime at the time approval was given.

The terms of Council's 1933 approval

1. On appeal, Council maintained the submission which had succeeded at first instance: that Workmate Abrasives was dispositive, and that the character of the existing use was determined by reference to the 1933 approval. It is convenient to deal with what can be inferred as to its terms immediately.
2. The precise terms of Council's 1933 approval were not known. Those terms are to be inferred from three contemporaneous documents, read in the light of the applicable planning regime.
3. The first document was an entry in a building register maintained by Council, which recorded various applications (for buildings, alterations, garages and subdivisions) sequentially, in the order they were received. Each application was given a number and a brief description. The register recorded on 18 September 1933 that an application had been made relating to the Arbutus St property. The application was numbered "33/110", was described as "Alt & Adds into 2 flats", and was made by "Ackland Mrs H".
4. The second was a single page architectural plan with a Municipality of Mosman stamp upon it, showing that a fee (of half a crown) was paid on 18 September 1933. The plan was annotated "33/110" and dated by hand 25 September 1933. It was described as "plan of conversion of residence into flats Arbutus Street Mosman for Mrs H Ackland". The ground floor and first floor floor-plans showed self-contained residential accommodation. The plans also showed a basement with a laundry and ironing and box room.
5. The third was the Valuer General's valuation rolls and field books. One thing that has remained constant throughout the period since 1933 is that the rates imposed by local councils have been determined by reference to land values assessed by the Valuer General in accordance with the Valuation of Land Act 1916 (NSW). The valuation list in 1930 described the "nature of improvements" on the land as "RES" (that is, "residence") while in the 1935 list the improvements were described as "FLATS". An entry dated 24 October 1933 in the field book recorded that the land was "converted to Flats". It will be seen below that what matters for present purposes is that the building works and change of use took place before 1937; as much may confidently be inferred from the contemporaneous documents.
6. In order to place those documents in context, so as to infer precisely what Council approved in 1933, it is necessary to turn to the legislative regime then applicable.

The planning regime in 1933 as applicable to Arbutus St, Mosman

1. The Local Government Act 1919 (NSW) commenced on 1 January 1920. Within Pt XI, s 305(1) empowered the council of a municipality (such as the Municipality of Mosman) to control and regulate the erection of buildings in accordance with Pt XI. "Erection" included "any structural work or any alteration, addition, or rebuilding": s 304. The regime followed a familiar pattern. It was prohibited to erect or use a building in contravention of the Act: s 306(1), and in particular it was prohibited to occupy or use a building for residential purposes if it was erected for any purpose other than residential purposes without prior consent: s 306(2). Section 311 provided that a building "shall not be erected or altered unless the approval of the Council is obtained therefor beforehand". Section 312 required applications for the approval of Council to be made in the prescribed manner, to be accompanied by two copies of such plans and specifications as need be prescribed, and to be accompanied by the prescribed fee. Section 314 required the Council to consider each application and the plans and specifications accompanying it and empowered it to approve, or approve subject to conditions, or disapprove the application. Section 315 required substantial commencement within twelve months of the approval, failing which it was void. Section 316 empowered Council to prohibit the use or occupation of a building until permission to do so had been granted.
2. Importantly for present purposes, s 309 empowered the Governor to declare portions of a council's area to be a "residential district". If such a declaration were made, various prohibitions in s 309(1) could be engaged including a prohibition on the erection or use of a building for specified trades, industries, shops and places of public amusement. Of this provision it was said that: "Section 309 represents the earliest local attempt at statutory town-planning. As originally enacted in 1919 it was a modest effort at best: designed merely to enable councils to keep out of residential areas certain other uses. Over the years the section has been amended and expanded": M Wilcox, The Law of Land Development in New South Wales (1967, Law Book Company Ltd) at 461.
3. On 11 November 1921, Ordinance No 71 was proclaimed under the Local Government Act 1919. It applied in the Municipality of Mosman. Part IV of Ordinance No 71 applied to "residential flat buildings" (which were defined - see below), and made provision for the extent to which such buildings could occupy the allotment of land on which they stood, their maximum height, and various other structural matters.
4. On 11 August 1922, cl 52½ was inserted into Ordinance No 71. This clause provided that when it was "proposed to alter a building so that it may be used as a dwelling-house or residential flat building", Council could require the whole building to comply with the provisions of the Ordinance which apply to a dwelling-house or residential flat building as the case may be.
5. On 21 October 1924, parts of Mosman, including Arbutus St, were proclaimed to be a residential district, pursuant to s 309 of the Local Government Act 1919.
6. In 1928, the Local Government (Amendment) Act 1928 (NSW) relevantly amended the Local Government Act 1919 as follows. First, a new paragraph, s 309(1)(f), was inserted into s 309 of the Act, adding a new prohibition which could be engaged when a residential district proclamation was made. New paragraph (f) prohibited the "erection or use in the district of any building for the purpose of a residential flat". A proviso to that paragraph was that: "Provided that this shall not apply to a residential flat building which has been erected or the erection of which has been approved by the Council before the date of the proclamation". Neither "residential flat" nor "residential flat building" was defined in the Local Government Act 1919 at that time. However, Ordinance No 71 in the form it took at the time when s 309(1)(f) was inserted did provide a definition of "residential flat building" in these terms: "'Residential flat building' means a building containing two or more flats, but does not include a row of two or more dwellings attached to each other such as are commonly known as semi-detached or terrace buildings."
7. Secondly, s 309(1A) was introduced (by s 9 of the 1928 Act), in response to the High Court's decision in Dyer v Luckett (1928) 41 CLR 44: see M Wilcox at 466-468. The new sub-section authorised a proclamation to apply "generally to all or any trades, industries, manufactures, shops and places of public amusement", or "particularly to the trades, industries, manufactures, shops and places of public amusement mentioned in the proclamation" or "to all trades, industries, manufactures, shops and places of public amusement other than those mentioned in the proclamation". However, no provision was made in respect of the use of a building for residential flats, even though the prohibition was introduced by the same amending Act. Residential flat buildings were either authorised or forbidden.
8. It is generally wrong to construe an Act by reference to delegated legislation made pursuant to it: Master Education Services Pty Ltd v Ketchell [2008] HCA 38; 236 CLR 101 at [19]. That would be for the tail to wag the dog, as French CJ observed in Plaintiff M47/2012 v Director-General of Security [2012] HCA 46; 251 CLR 1 at [56]. The present case is an exception to the general rule. When in 1928 an amendment was made prohibiting the erection or use of a class of building described as "residential flat building", the term was undefined in the Act but was defined in the Ordinance made pursuant to the Act, Pt IV of which regulated "residential flat buildings". In those circumstances, to conclude that the identical term in the new Act bore the meaning it had been given in the pre-existing delegated legislation is to do no more than to read the Act and the delegated legislation together so as to identify the nature of the scheme.
9. In around September 1933, the Council granted approval in respect of proposed building works at 7 Arbutus St. The terms of that approval could not be located by the parties. It seems plausible that the building works, which were quite minor, were completed by around 24 October 1933, in accordance with a note in the field book ("converted to Flats 24/10/33"). The field notes from the Valuer General are difficult to interpret, but there appears to be a notation in an entry dated 24 October 1933 against the field "Cost of Improvements" which reads "Convert Flats £300". But it is quite clear that the conversion had been effected by 1935, because the land and improvements were revalued as at 27 June 1935 at a higher rate and were described in the valuation list as "FLATS", in contrast with earlier entries where the same entry was "RES".
10. By proclamation dated 15 September 1937, the 1924 proclamation declaring parts of Mosman, including Arbutus St, to be a residential district was revoked, and a new series of 14 residential districts was established. Arbutus St fell within District 11, within which "the erection or use of any building for the purposes of a residential flat" was forbidden (see New South Wales, Government Gazette, No 142, 24 September 1937, 3870). That engaged the prohibition in s 309(1)(f), which had not been engaged by the 1928 proclamation.
11. Thus, in 1933, when the building approval was granted, Pt XI of the Local Government Act 1919 made provision for the erection and use of buildings in the Municipality of Mosman. Special provision was made for the use of buildings for residential purposes. The Act identified two categories of buildings capable of being used for residential purposes: dwelling-houses and residential flat buildings. That distinction was made applicable to the land at Arbutus St only through Ordinance No 71. That ordinance dealt expressly with residential flat buildings in Pt IV, and with alterations involving a change of use to either a dwelling-house or residential flat building in cl 52½. Unlike every other building or use which could be forbidden by a proclamation, the Act made no provision for a more precise articulation of classes of residential flat buildings which could be prohibited or permitted. (This changed when the Local Government (Regulation of Flats) Act 1940 (NSW) introduced into the 1919 Act four classes of residential flat buildings, known as classes A, B, C and D, which were defined by reference to their footprint and height, as well as a definition of "residential flat building" in identical terms to that in Ordinance No 71.)
12. Finally, in 1933, it was lawful for the Council to grant permission to alter the existing house at Arbutus St so that it comprised two flats, being something which answered the description of a "residential flat building" in Ordinance No 71. That was because although the land was in a proclaimed residential district, the proclamation had been made before 1928, and so had not engaged the prohibition in s 309(1)(f) which had been added by the 1928 amending Act.

Inferring the terms of Council's 1933 approval

1. What then were the terms of Council's approval? It is necessary to start with the secondary evidence referred to above. This is not a case of another document constituting Council's consent, nor one of inferring consent from conduct: cf Baiada v Waste Recycling and Processing Service of NSW [1999] NSWCA 139; 130 LGERA 52 at [38] and [98]. Instead, it is a case where secondary evidence is used to identify the terms of a written approval which is not presently able to be found, an approach which accords with that taken in North Sydney Municipal Council v Boyts Radio & Electrical Pty Ltd (1989) 16 NSWLR 50 at 52-53.
2. The plan bearing Council's stamp refers to a "conversion of residence into flats". Council's building register refers to "alt[erations] and add[itions] into 2 flats". The Valuer General's field notes refer to "converted to flats". But none of these descriptions is determinative of the use, if any, which the approval authorised.
3. There is no reason to conclude that approval was sought or granted for any particular use in terms. No question arose under s 306: the building had been used for residential purposes before 1933, and it was proposed that it continue to be used for residential purposes. What was sought and obtained from Council was an approval under s 314 of the Local Government Act 1919, so as to avoid the prohibition upon erecting or altering a building imposed by s 311. The prohibition in s 311 said nothing as to the use of the building.
4. In the task of inferring what was approved by Council, it is necessary to put to one side preconceptions deriving from more recent legislation. Section 4(2) of the Environmental Planning and Assessment Act today provides that a reference to the "carrying out of development includes a reference to the use of land or a building". That has been the position for many years. It may be seen in s 342T of the Local Government Act 1919 and was traced by Sugerman J, whose judgments in this area warrant high regard, in Ex parte Arnold Homes Pty Ltd; Re Blacktown Municipal Council (1962) 9 LGRA 268 at 271: "The definition of 'development' in s 342T(1) embodies the same basic concepts as are to be found in similar definitions in English town and country planning legislation (see Town and Country Planning Act 1932, s 53, and Town and Country Planning Act 1947, s 12(2)), [ie], new use or change of use."
5. But s 342T was inserted in 1945. It had no counterpart in the Local Government Act 1919 in 1933.
6. To put the matter squarely, in 1933 it was possible for the owner of the Arbutus St property, which had been used as a single residence, to use it as two residences without any approval from Council at all. (The position changed in 1937.) Council's approval was only required in 1933 because of the structural alterations which were sought to be made.
7. That said, it is clear that the alteration works proposed would change the nature of the building from a dwelling-house to a residential flat building. It is possible that Council insisted upon compliance with the provisions of Pt IV of Ordinance No 71, as it was entitled to do under cl 52½ of that Ordinance, and imposed conditions upon its approval to ensure that that occurred. The materials do not permit any inference confidently to be drawn one way or the other on that point, so far as I can see. I see no reason to resolve the parties' competing submissions on the failure by Council to insist that there was an external fire-stair, which turned in part on the definition of "storey" but may merely have reflected a relaxed view of what in practice was required on the sloping site; whatever the position be, this sheds little light on the terms of Council's approval.
8. It is also clear that Council's approval in 1933 was for those structural alterations to be made in accordance with the approved plans; if that did not occur, then an occupation certificate under s 316 might be withheld. However, once again it does not follow that those plans circumscribed the use which might be made of the altered building. It is basic that use must be for a purpose, and that the purpose is not concerned with the nature of the buildings that will be used to serve that purpose. That was the reason for the criticism of substantially the same submission which was advanced by the council in Ashfield Municipal Council v Armstrong [2002] NSWCA 269; 122 LGERA 105, where the question was whether a use of a building comprising four flats had commenced prior to a prohibition coming into force (at [11]): "In specifying 'four flats' as a component part of the 'use', Mr Craig's submission elided the distinction between use and building. The provisions of the EPA Act set out above are concerned with 'existing use', that is, the 'use ... for a lawful purpose' of premises."
9. The same principle was more recently restated in Abret Pty Ltd v Wingecarribee Shire Council [2011] NSWCA 107; 180 LGERA 343 at [51]-[52] (Beazley JA, Campbell JA and Handley AJA agreeing): "[I]n planning law, 'purpose' is not concerned with the nature of the buildings that will be used to serve that purpose. Uses of different natures can still be seen to serve the same purpose".
10. The primary judge's reasoning appears to have reached a conclusion as to use from the plans alone, divorced from the planning regime applicable in 1933. It will be seen from the foregoing that I would, respectfully, take a different approach.
11. I would conclude that it is more likely than not that Council's approval did not explicitly specify the use of the land, or the purpose of such a use, as opposed to specifying the building work authorised to be undertaken. There was no reason for that to occur. Of course, it was clear that the altered structure was in fact to be used as two self-contained flats. But that does not of itself answer the question as to the characterisation of the use.
12. It may readily be inferred, as Council submitted, that "the missing consent is for alterations and additions to a dwelling-house for conversion into two flats in accordance with the approved plan" (written submissions, paragraph 11). However, Council's submissions added that "It did not authorise a residential flat building, nor did it authorise any number of flats on the land". There are two difficulties with the latter proposition. The dwelling-house, as altered, undoubtedly was a residential flat building as the term was then understood (as noted above, it was broader than it is under the 2012 LEP, for in 1933, two flats, rather than three, were sufficient). Moreover, the fact that it did not authorise "any number of flats" is not to the point in order to answer the question of use.
13. Taking the position at its highest so far as Council was concerned, it might be said that the 1933 approval of the physical work modifying the building impliedly authorised the building to be used for two flats. However, that would elide the basal distinction between development which is lawful without consent, and development which is lawful only with consent. What is more, the legislation in 1933 did not define "development" to include "use".
14. The position may be contrasted with the two decisions on which the primary judge relied. In Botany Bay City Council v Parangool Pty Ltd [2009] NSWLEC 198, the development consent expressly authorised a use: "Use of existing warehouse building for the warehousing/storage and distribution of alcoholic goods". Those "express and limiting terms" of the development consent delineated the existing use on which the respondent had relied, with the result that that use could not be characterised as "a use for warehousing generally".
15. Secondly, in MM & SW Enterprises Pty Ltd v Strathfield Council [2010] NSWLEC 8; 172 LGERA 125, the consent said to support the existing use (as a brothel) was once again expressed in terms of use: it permitted the "use of the property described above for commercial offices", subject to it not being "used for the purpose of a Doctors' nor Dentists' surgery" or "used for residential habitation at any time". It was sufficient for the Court to conclude as a matter of construction that the use of the premises (as a brothel) fell outside that which was permitted by the consent.
16. The point of distinction is that the consents in Parangool and MM & SW Enterprises contained limiting words constraining the uses which were permitted, without which the use would have been prohibited. Such words would not have appeared in the 1933 approval, because it is to be inferred that no approval for any use, beyond the existing use for residential purposes, was sought, nor was any such approval required.

The 1937 prohibition and subsequent amendments to the planning regime

1. As noted above, in 1937 it became unlawful for Council to approve residential flat buildings in a residential district such as Arbutus St.
2. It follows that the application approved by Council in 1933 would have been refused had it been made after September 1937. As Bavin J said in Wright v Concord Municipal Council (1937) 13 LGR 183 at 186, following the making of a valid proclamation, council "has no alternative but to refuse".
3. However, because of the proviso to s 309(1)(f), the 1937 proclamation did not render the use of the building for the purpose of a residential flat unlawful. What is more, s 309(2) of the Local Government Act 1919 applied: "Nothing in this section shall preclude the continuance of the use of any building for any purpose for which the same was used immediately before the date of the proclamation aforesaid, or the alteration, enlargement, rebuilding or extension of any building used for any such purpose whether or not such alteration, enlargement, rebuilding or extension involve the use of adjoining land which immediately before the date of the proclamation was in the same ownership or for such other purpose as the council thinks reasonable in the circumstances."
4. It will be seen below that s 309(2), as construed by the High Court, is relevant to the proper approach to characterisation of the existing use. It suffices for now to observe that s 309(2) had two presently relevant features. First, it ensured that the making of a proclamation did not preclude (a) the continuance of an existing use for a purpose, or (b) the use for any other purpose which a council thought reasonable. Although there was not the same restriction on Council's power as may now be found in reg 41(1)(d), the notions of use for the same purpose and use for another purpose posed essentially the same questions of generality or particularity as appear in the current legislation.
5. Secondly, s 309(2) preserved not merely the lawfulness of an existing use for a purpose, but also the "alteration, enlargement, rebuilding or extension of any building used for" that existing use. It ensured that a residential district proclamation did not preclude the alteration, enlargement, rebuilding or extension of all classes of buildings affected by the proclamation, including a residential flat building, so long as the building was still used for the purpose it had been used for immediately before the proclamation was made.
6. Substantially the same position obtained thereafter until the present. The land was zoned "living area" under the County of Cumberland Planning Scheme Ordinance between 1951 and 1982, and "zone 2(a1) Residential" under Mosman Local Environmental Plan No 1 between 1982 and 1998 and under Mosman Local Environmental Plan 1998 between 1998 and 2012. The use as a residential flat building was at all times prohibited under each of those instruments.
7. However, a continuation of the existing use was at all times authorised (including by cl 32 of the County of Cumberland Planning Scheme Ordinance 1951, and by Div 10 of Pt 4 of the Environmental Planning and Assessment Act).
8. Moreover, in the succeeding decades there continued to be counterparts to s 309(2). Clause 35 of the County of Cumberland Planning Scheme Ordinance provided that an existing building could be "altered, enlarged, or extended, or added to by the erection of new buildings". Section 108 of the Environmental Planning and Assessment Act as originally enacted followed the current form of empowering regulations for the carrying out of alterations or extensions to or the rebuilding of a building or work being used for an existing use, and the change of an existing use to another use.
9. It may assist to repeat the essential conclusions reached thus far. The 1933 approval approved the modification of an existing structure. There was no occasion for it to approve any particular use in terms. If one were to ask what was the source of the entitlement for the building to be used for the lawful purpose of two flats after 1933, as opposed to the entitlement to modify the existing building, then the answer was the fact that it had been lawfully used for residential purposes for many years prior (indeed, prior to the enactment of the Local Government Act 1919).
10. A focus on the distinction between the approval under s 314 to alter the existing building, and the lawfulness of the use of that building for residential purposes, enables an observation which is critical to the determination of this appeal to be made. The former but not the latter, is sourced in the 1933 consent. The use of the building as modified for residential purposes therefore answers the description of an existing use under s 106(a), not (b) of the Environmental Planning and Assessment Act.

The characterisation of the existing use

1. The preferable way of analysing the ultimate question as to the nature of the existing use rights is that it does not turn on the ordinary construction of the terms of a development consent. This is not a case like Parangool or MM & SW Enterprises where the development consent prescriptively identifies the permitted use. It is instead a case like Ashfield Municipal Council v Armstrong or Woollahra Municipal Council v Banool Developments Pty Ltd where the lawful use is not derived from any consent or approval. The principles articulated by Kitto J in Shire of Perth v O'Keefe apply.
2. Further, if I were wrong about that, such that it is correct for the purposes of s 106 to rely on the second limb of the definition of "existing use" by reason of the fact that the 1933 approval impliedly authorises the use of the building for the purpose of flats, even so I would not consider what was said in Botany Bay City Council v Workmate Abrasives Pty Ltd (2004) 138 LGERA 120 to extend to the present case. The proposition in Workmate Abrasives at [14] that the reasoning in Shire of Perth v O'Keefe is "irrelevant" where an existing use is claimed to flow from an existing development consent is, in my opinion, too broad, if it is said to apply to a case where a development consent is silent as to use and purpose. In such a case, it is not foreign to the task required by the legislation to apply the principles of characterisation directed to identifying the appropriate level of particularity or generality.
3. I have other reservations about the authority of Workmate Abrasives. That was a decision given ex tempore and without the benefit of argument from the respondent, in circumstances where the consent specified a use, namely, the manufacturing and reconditioning of industrial machinery. It is to my mind difficult to reconcile with the reasoning in North Sydney Municipal Council v Boyts Radio & Electrical Pty Ltd (1989) 16 NSWLR 50. The use in Boyts was originally as a bakery, but was changed by an approval in 1954 to a warehouse at the same time that the council approved additions and alterations to the building: see at 52-53 (in the interests of concision, I am simplifying the facts slightly). That was a different case from the present, because there was evidence that the approval had been granted in terms of permitting the new use, at a time when, following the introduction of the County of Cumberland Planning Scheme Ordinance 1951, permission was required for the use as a "warehouse" or "bulk store". But even so, Kirby P, with whom Samuels and Priestley JJA agreed, applied the so-called "genus" test associated with Shire of Perth v O'Keefe and Royal Agricultural Society of New South Wales v Sydney City Council (1987) 61 LGRA 305. Perhaps because the respondent did not appear, the Court in Workmate Abrasives appears not to have been taken to Boyts. That said, none of the foregoing is intended to cast doubt upon the result in Workmate Abrasives, for the Court proceeded to apply the genus test in the alternative to confirm its conclusion: at [15]-[16].
4. I return to the question of characterisation, which is not free from difficulty. As Professors Twining and Miers have said in a different context, "There are no categorical rules to direct judges about the selection of appropriate levels of generality": W Twining and D Miers, How to Do Things with Rules, (5th ed, 2010, Cambridge University Press) at 309. The same is true here.
5. However, there are well-established principles to guide the exercise of judgment. The question is the appropriate characterisation of the purpose of the use: O'Keefe at 535. That question is not answered through a meticulous examination of the details of the activities undertaken on the land: O'Keefe at 535. It is necessary to have regard to the purpose served by those activities: Abret Pty Ltd v Wingecarribee Shire Council at [51]. That use is characterised liberally, having regard to the principle that provisions designed to protect and preserve existing use rights should be as liberally construed as the statutory language in its context allows: Dorrestijn v South Australian Planning Commission (1984) 59 ALJR 105 at 108.
6. In Royal Agricultural Society (NSW) v Sydney City Council at 310, McHugh JA (with whom Hope and Samuels JJA agreed) stated that the level of generality was "not so general that the characterisation can embrace activities, transactions or processes which differ in kind from the use which the activities etc as a class have made of the land". In determining the appropriate genus, "attention should be focused on the [town-planning] purpose for which the determination is being made ... because the regulation of the use within the neighbourhood is the general purpose for which planning law is provided": Boyts at 59; Grace v Thomas Street Café Pty Ltd [2007] NSWCA 359; 159 LGERA 57 at [69].
7. Informed by those principles, I conclude that the appropriate level of generality to describe the existing use is as a building containing "flats", as opposed to the Council's submission of a building containing two flats. I reach that conclusion for the following reasons.
8. First, I am not attracted to the proposition that the existing use is appropriately described by reference to a particular number of flats within a building. It cannot be the case that a residential flat building containing eight flats is in a different category from one containing seven or nine flats. Applying what McHugh JA said in Royal Agricultural Society, I do not consider that the use of a building for the purpose of three flats is "different in kind" from its use as a building for the purpose of two flats. I appreciate that there is what Tobias JA referred to as a well-known class of buildings commonly referred to as a "duplex": Calleja v Botany Bay City Council [2005] NSWCA 337; 142 LGERA 104 at [25]; see also Shellcove Gardens Pty Ltd v North Sydney Municipal Council (1960) 6 LGRA 93 at 99. Council relied on that distinction. As much is recognised by the dual occupancy definitions in the current LEP. But that was not a class of use separately recognised in the regime in 1933. The appellant submitted that in 1933, insofar as the planning regime identified residential buildings, it only specified "dwelling-houses" and "residential flat buildings". The appellant submitted orally that "the nature of the use or the only nature of the use that could have been the subject of the approval in 1933, was residential flats, it not being a dwelling-house. That was the only other identifiable candidate from the Act." I agree. What was approved in 1933 was the conversion of a building such that it might be used no longer as a "dwelling-house" but instead as a "residential flat building". (It will be recalled that in 1933, but not in 2012, a "residential flat building" was a building containing 2 or more flats.)
9. Secondly, I apply the same reasoning employed by Mason J in Woollahra Municipal Council v Banool Developments Pty Ltd at 145. Mason J (with the agreement of the other members of the Court) there described s 309(2) of the Local Government Act 1919 in some detail in its application in a substantially similar context (following the making of a residential district proclamation). His Honour said that the fact that it was a provision which makes lawful a continuation of a use which would otherwise be in breach of the proclamation "supplies an indication that the purpose which is there referred to is specific rather than general". Mason J also referred to the consideration that s 309(1)(c) authorised a "proclamation to descend to the particularity of a shop described by reference to the trade carried on by the shop-keeper or the goods or services which he supplies". His Honour then said: "The degree of particularity permitted in the exercise of the power is then reflected in the concept of 'purpose' in s 309(2). Unless that concept expresses a similar degree of particularity, the protection which the sub-section accords to an existing use may render lawful a future use of a shop for a purpose specifically prohibited in the proclamation, notwithstanding that the shop was not used immediately before the date of the proclamation for the purpose specifically prohibited."
10. His Honour then stated that the following observations made by Kitto J in Shire of Perth v O'Keefe applied with equal force to s 309(2): "The application of the by-law in a particular case has therefore not to be approached through a meticulous examination of the details of processes or activities, or through a precise cataloguing of individual items of goods dealt in, but by asking what, according to ordinary terminology, is the appropriate designation of the purpose being served by the use of the premises at the material date[.] ... The general considerations that have been mentioned will suffice for most cases. If premises were being used as professional offices at the commencement of the by-laws, no greater degree of particularity in defining the purpose is likely to appeal to practical minds as appropriate in the application of town-planning legislation than is involved in saying that the purpose is that of professional offices: the particular profession of the occupant would not ordinarily be adverted to by a person speaking in a town-planning context. The answer is perhaps not so easy in the case of a shop. As to a butcher's shop, for example, I should be inclined to think that while it would be immaterial to inquire into the details of the user the 'purpose' in the relevant sense would be the purpose of a butcher's shop and not of a shop generally."
11. The High Court in Banool allowed the appeal, restoring the declarations made by Hope J at first instance, who had rejected the land owner's submission that describing the purpose as "neighbourhood shops" or "neighbourhood retail shops" was appropriately particular.
12. It will be seen that Mason J relied on the level of particularity authorised by the Act to be contained in a residential district proclamation, as well as the principles in Shire of Perth v O'Keefe, in order to evaluate the appropriate level of generality or particularity.
13. To return to the facts of this appeal, the 1924 proclamation prohibited a long list of factories, shops, and other uses. It included "picture theatres, halls for public amusement, abattoirs, livery stables, bottle yards, dairies and milk depots, billiard-rooms, cattle sale-yards, produce stores, depots for the storage or sale of any material, public garages and public laundries" (they are merely the last five lines of 23 lines of prohibited uses in the proclamation as gazetted). However, in marked contrast, there was no power for any more nuanced articulation of residential flat buildings, whether by reference to number of flats, or height, or area of land occupied. The approach taken in Banool is consistent with a description at the level of generality sought by the appellant.
14. Thirdly, attention should be focussed on the town-planning purpose for which the determination is being made. Unsurprisingly, distinct town-planning purposes are associated with the butcher's shop mentioned by Kitto J, as opposed to, say, a shoe shop. That is far from clear in the case of buildings containing different numbers of flats. The detail of the 1924 proclamation informs the approach to be taken. The existing use was for more than one occupancy in what was otherwise a single dwelling-house. That use was, in 1933, given the description of "residential flat building". That same distinction appeared in the 1928 amendments, in the 1938 proclamation, and in legislation over the next few decades permitting conversion of buildings into flats. There was no differentiation in 1933 based on the intensity of the use as a residential flat building. As the appellant put in writing: "[A] description of a use as 'flats' or 'residential flats' sufficiently described the use, whether as a label or as the nomination of the characterisation of use, irrespective of whether there were two flats, four flats or eight flats. In each case the relevant use was for the purposes of flats, and the consent authorised the use of the Land for those purposes."
15. The fact that subsequent local environmental plans distinguish between dual occupancies and residential flat buildings is no sound basis to characterise the existing use more narrowly. Kirby P said in Boyts at 61-62 in precisely the same context, in relation to a changed definition of "warehouse", that "It is impermissible, retrospectively, to impose the particular meaning of 'warehouse' later adopted in [a later planning ordinance]". The same applies with equal force to the later, narrower meaning given to "residential flat building".
16. Fourthly, weight should be given in this contestable and somewhat impressionistic area to considerations of consistency. This Court in Ashfield Municipal Council v Armstrong made a declaration that the appropriate level of particularity was for the purpose of a residential flat building, rather than as a building containing four flats. Having rejected Council's submission that Armstrong should be distinguished, it is appropriate to apply the same level of particularity to the present case. (It will be seen that a slightly different wording is required, because of the altered definition of "residential flat building" in the Mosman 2012 LEP, but that does not detract from the force of this consideration.)
17. In those circumstances, the appropriate characterisation of use is a building used for flats. Council submitted that that could not be so, because then "the land could be used for any number of flats". But that submission fails to address the fact that there is no authorisation to do anything beyond the existing use in the existing structure until a proposal is approved on its merits.
18. Nonetheless, the precise form of declaration proposed by the appellant is undesirable, although it is identical to that issued by this Court in Ashfield Municipal Council v Armstrong, because of the ambiguity of the term "residential flat building". A declaration in the terms sought would immediately prompt the question: does the declaration of existing use refer to "residential flat building" as defined in Ordinance No 71 in 1933, or in the Local Government Act 1919 in 1940, or in the Mosman LEP in 2012, or something else? Moreover, it is plain that the building is currently not used as a "residential flat building", as that term is defined in the current LEP, for it is a dual occupancy. Declarations should be clear on their face.
19. This appeal should, in accordance with s 56(1) and (2) of the Civil Procedure Act 2005 (NSW), be decided so as to resolve the real issue dividing the parties. The real issue is the question of power to which I earlier referred. The declaration should make it clear, if it is possible to do so, whether a residential flat building with three flats and basement parking would be "an enlargement or expansion or intensification of an existing use" which is "for the existing use and for no other use" or else would involve a "change of use" within the meaning of those terms in s 108(1)(b) and (c) and regs 41 and 42.
20. A declaration that the land has the benefit of existing use rights as a building containing flats will resolve the question of power, and avoid the ambiguity of "residential flat building". Subject to the Council's notice of contention, declaratory relief in those terms should issue.

Council's notice of contention

1. The Council sought to defend the substance of the result reached by the primary judge by a notice of contention that the effect of s 109B of the Environmental Planning and Assessment Act was to deprive the appellant of all existing use rights. Section 109B is in the following terms: "109B Saving of effect of existing consents (1) Nothing in an environmental planning instrument prohibits, or requires a further development consent to authorise, the carrying out of development in accordance with a consent that has been granted and is in force. (2) This section: (a) applies to consents lawfully granted before or after the commencement of this Act, and (b) does not prevent the lapsing, revocation or modification, in accordance with this Act, of a consent, and (c) has effect despite anything to the contrary in section 107 or 109. (3) This section is taken to have commenced on the commencement of this Act."
2. Council's submission on its notice of contention was commendably concise. It was put thus orally: "[T]he argument is that the definition of an existing use in 106(a) is a use, we'll just say use of a building here, for a lawful purpose immediately before the coming into force of an environmental planning instrument which would but for an irrelevancy have the effect of prohibiting that use. So you don't get an existing use unless there is an environmental planning instrument that has the effect of prohibiting it."
3. After referring to the fact that the definition of development includes use, and the strength of s 109B(2) ("has effect despite anything to the contrary in section 107 or 109"), the submission concluded: "So it has the effect of an overriding provision, and we say that also because if you go to 107 which is the foundation for the right, 106(a) is only definitional, 107(1) commences, 'Except where expressly provided in this Act'. So it is subject in that sense to 109B. And that is really the beginning and the end of the argument. We say that there is a, on using the words literally, there is a carve out from existing uses under 106 and 107 for existing development consents."
4. The point was squarely flagged in Council's defence, which alleged that "by reason of s 109B(1) of the Act, the land did not have the benefit of an existing use because LEP 2012 did not prohibit use of the Land for that purpose". Contrary to the appellant's submissions, it is not a new point which cannot be raised on appeal: see Cassegrain v Gerard Cassegrain & Co Pty Ltd [2015] HCA 2; 89 ALJR 312 at [64] and Attorney General of New South Wales v Homeland Community Ltd [2015] NSWCA 15 at [59].
5. However, if the submission be accepted, the appellant would not be entitled to the more limited existing use rights declared by the primary judge, accepting the Council's submission. The point should have been raised by cross-appeal, rather than notice of contention. But no useful purpose would be served by granting leave to serve a cross-appeal (or treating the notice of contention as a cross-appeal) unless there were merit in the Council's submission. I turn accordingly to the substance of the point. It may readily be seen that the submission should be rejected.
6. The provisions which s 109B displaced, on the Council's argument, are ss 107 and 109. They are as follows: "107 Continuance of and limitations on existing use (1) Except where expressly provided in this Act, nothing in this Act or an environmental planning instrument prevents the continuance of an existing use. (2) Nothing in subsection (1) authorises: (a) any alteration or extension to or rebuilding of a building or work, or (b) any increase in the area of the use made of a building, work or land from the area actually physically and lawfully used immediately before the coming into operation of the instrument therein mentioned, or (c) without affecting paragraph (a) or (b), any enlargement or expansion or intensification of an existing use, or (d) the continuance of the use therein mentioned in breach of any consent in force under this Act in relation to that use or any condition imposed or applicable to that consent or in breach of any condition referred to in section 80A(1)(b), or (e) the continuance of the use therein mentioned where that use is abandoned. (3) Without limiting the generality of subsection (2)(e), a use is to be presumed, unless the contrary is established, to be abandoned if it ceases to be actually so used for a continuous period of 12 months." "109 Continuance of and limitations on other lawful uses (1) Nothing in an environmental planning instrument operates so as to require consent to be obtained under this Act for the continuance of a use of a building, work or land for a lawful purpose for which it was being used immediately before the coming into force of the instrument or so as to prevent the continuance of that use except with consent under this Act being obtained. (2) Nothing in subsection (1) authorises: (a) any alteration or extension to or rebuilding of a building or work, or (b) any increase in the area of the use made of a building, work or land from the area actually physically and lawfully used immediately before the coming into operation of the instrument therein mentioned, or (c) without affecting paragraph (a) or (b), any enlargement or expansion or intensification of the use therein mentioned, or (d) the continuance of the use therein mentioned in breach of any consent in force under this Act in relation to that use or any condition imposed or applicable to that consent or in breach of any condition referred to in section 80A(1)(b), or (e) the continuance of the use therein mentioned where that use is abandoned. (3) Without limiting the generality of subsection (2)(e), a use is presumed, unless the contrary is established, to be abandoned if it ceases to be actually so used for a continuous period of 12 months."
7. Section 108, which is referred to above under the heading "The background to the litigation", empowered the making of regulations which may provide a mechanism to authorise what is prohibited by ss 107(2) and 109(2).
8. Section 107 applies where there is an absolute prohibition; s 109 where a prohibition may be relaxed if consent is granted: Steedman at 579. Both provisions reflect a compromise between a general prohibition made in the public interest, and the unfairness upon an owner or occupier who has used land for the prohibited purpose prior to the date the prohibition comes into effect. The regulation making power in s 108 also reflects a policy determination that sometimes not merely a continuation of use may be appropriate, but also, in some cases, the owner should be able to alter or extend or rebuild. As this appeal and many others illustrate, those rights can be very valuable. Not lightly in those circumstances is it to be inferred that that legislative balance, and the valuable rights conferred by ss 107, 108 and 109, were substantially taken away by s 109B when the latter was enacted in 1992.
9. Secondly, the Minister introducing the bill said nothing of any such altering of the balance or taking away of rights previously enjoyed. To the contrary, he said in the Second Reading speech that: "The purpose of this amendment is one of clarification only, but it deals with the important area of existing and continuing use rights. One of the fundamental concepts of the Environmental Planning and Assessment Act is the right to continue a development, even if a new planning instrument comes into force, either prohibiting the development or requiring development consent. Though there are a number of restrictions on the extent of those rights, the restrictions have not in the past been considered as preventing a person from continuing to operate to the full extent possible under a valid development consent. It is this aspect to which the amendment is directed. The purpose of the amendment is to make clear that subsequent environmental planning instruments do not have the effect of prohibiting or requiring a further development consent to authorise the carrying out of a use of land which is permitted by a development consent and which was being carried out at the time the new planning instrument came into force. The amendment does not change the current legal position but rather clarifies and puts beyond doubt what is considered to be the underlying policy and actual effect of the current provisions of the Act. Importantly, the amendments assure people who hold valid development consents that they will be able to complete and continue their development in accordance with the terms of their development consent. The amendments will not, however, in any way affect those operations relying on existing and continuing use rights which have no development consent": New South Wales Legislative Assembly, Parliamentary Debates (Hansard), 24 November 1992, at 9789-9790, emphasis added.
10. It will be seen that the purpose stated by the Minister was in the teeth of the construction for which the Council now contends. That said, there are limitations to the extent to which s 34 of the Interpretation Act 1987 (NSW) entitles this Court to use the Second Reading speech to displace the ordinary effect of the statutory language: see Harrison v Melhem [2008] NSWCA 67; 72 NSWLR 380 at [12]-[13] and [159]-[162].
11. For those reasons, it is the third consideration which has greatest weight. The strong language of "has effect despite anything to the contrary in section 107 or 109" in (2)(c) and, especially, the retrospective force given to the section by (3) is typical of a later amendment which is designed wholly to enhance the rights given to a section of the public, and not in any way to detract from those rights.
12. It is thus easily seen that Council's submission carries with it a fatal flaw. If s 109B substantially detracted from the rights previously enjoyed by owners and occupiers of land, why ever should it be given retrospective force? What possible policy objective would be achieved in the case of a landowner having valuable existing use rights before 1992 when s 109B was introduced, on which action may have been taken, if those rights were taken away retrospectively with effect from 1992? This Court is required by s 33 of the Interpretation Act to prefer a construction which would promote the purpose of the Act; Council's submission collides with that obligation.
13. Thus, although the emphatic statutory language in s 109B(2)(c) and (3) was relied on by Council, in fact these provisions are the key to resolving the question of construction arising on the notice of contention. The effect of s 109B is not to alter the class of uses which are defined to be "existing uses" by s 106. After all, s 109B is not expressed to prevail over s 106, in contrast with its relationship with ss 107 and 109, as stated in s 109B(2)(c).
14. A recurring element of statutory construction is identifying which of two provisions is the leading provision, and which is the subordinate, to use Lord Herschell's language in Institute of Patent Agents v Lockwood [1894] AC 347 at 360, cited by the High Court in Project Blue Sky Inc v Australian Broadcasting Authority [1998] HCA 28; 194 CLR 355 at [70]. As between the definition of "existing use" in s 106 and the newly inserted s 109B, the former is the leading provision and the latter does not subtract from the class of uses which are existing uses. Section 109B far from achieving that result instead provides clarity as to the absence of effect of all environmental planning instruments upon all such existing uses. It does so by providing an additional immunity for carrying out development.
15. Council submitted that its construction reflected the literal meaning of the provisions, read together. That may be so, but it is trite that the ordinary grammatical or literal meaning of any legal text is not necessarily its legal meaning: Project Blue Sky v Australian Broadcasting Authority at [78]; Taylor v The Owners - Strata Plan No 11564 [2014] HCA 9; 88 ALJR 473 at [65]. An example is Plaintiff M47/2012 v Director-General of Security [2012] HCA 46; 251 CLR 1 where Hayne J said at [173] that, because an Act must be read as a whole, "the grammatical meaning of s 31(3) is not its legal meaning". This appeal provides another example; the evident absurdity of Council's construction displaces mere literalism. In Day v Harness Racing New South Wales [2014] NSWCA 423 at [55] I said: "Long ago the Earl of Selborne said that 'there is as much danger of error in extreme literalism as in too much latitude': McCowan v Baine [1891] AC 401 at 403. Dixon J said (by reference to earlier authorities) that 'the manifest intention of a statute must not be defeated by too literal an adhesion to its precise language': H Jones & Co Pty Ltd v Kingborough Corporation [1950] HCA 11; 82 CLR 282 at 318. The appellants' construction illustrates the point both judges were making." That is wholly applicable here. The fact that a degree of flexibility of approach is required when reading the definition of "existing use" with the substantive provisions is scarcely unusual: see Tovir Investments Pty Ltd v Waverley Council [2014] NSWCA 379 at [17].
16. That result accords with the weight of authority when this point or one similar to it has been taken, including the fully reasoned decision of Biscoe J in Currency Corporation Pty Ltd v Wyong Shire Council [2006] NSWLEC 692; 155 LGERA 230 at [47]-[61], although it is contrary to some passages in Caltex Australia Petroleum Pty Ltd v Manly Council [2007] NSWLEC 105; 155 LGERA 255 at [101]-[105] (I note the latter decision was reserved prior to Currency Corporation being delivered). The Court was not taken to any subsequent case endorsing Council's construction, whilst there are many later cases in which Council's construction has been rejected, so much so that it could be said in Cracknell & Lonergan Architects Pty Ltd v Leichhardt Municipal Council [2012] NSWLEC 194; 193 LGERA 151 at [53] that "[t]here is ample authority for the proposition earlier stated that a use pursuant to a development consent protected by s 109B may also be an existing use within the meaning of s 106".
17. Accordingly, I would dismiss the notice of contention.

Conclusion and orders

1. For those reasons, I would allow the appeal, set aside the orders made by the primary judge, and declare that the property known as 7 Arbutus St, Mosman has the benefit of existing use rights as a building containing flats. In that event, the parties sought to be heard further as to costs.
2. The formal orders I propose are: 1. Appeal allowed. 2. Set aside the orders made on 8 August 2014, and in lieu thereof declare that the property known as 7 Arbutus St, Mosman has the benefit of existing use rights as a building containing flats, and otherwise dismiss the summons filed 9 July 2013. 3. The parties to bring in agreed short minutes of order as to costs within 14 days from today, or, in the absence of agreement, submissions not exceeding 4 pages, any material on which they rely, and the form of orders as to costs at first instance and on appeal within 14 days from today.

Amendments 05 June 2015 - In Headnote at 6 and 16, "Protection" deleted, the word "Planning" inserted. 23 July 2015 - [34] - "ships" deleted, the word "shops" inserted. 26 February 2016 - [18] - "then" deleted [48] - "references" replaced by "a reference" [49] - "a" inserted, "or" replaced by "nor" [72] - "[13]" replaced by "[14] [73] - "was" deleted [75] - spelling of "Wingecarribee" corrected [79] - "provides" replaced by "supplies" [103] - "they" replaced by "these provisions" DISCLAIMER - Every effort has been made to comply with suppression orders or statutory provisions prohibiting publication that may apply to this judgment or decision. The onus remains on any person using material in the judgment or decision to ensure that the intended use of that material does not breach any such order or provision. Further enquiries may be directed to the Registry of the Court or Tribunal in which it was generated. Decision last updated: 26 February 2016