42 Ultimately, Rolfe AJA said that he was of the view that it could not be held that if there had been non-compliance with the deferred commencement condition, which he was not satisfied there was, that caused the development consent to lapse.
43 It is quite clear from the judgment in Australand that Bignold J was not required to consider the effect of an express condition but rather whether a failure to comply with the requirements of s 91AA itself gave rise to the lapse of a development consent. In Johnson and Pulver Cooper there clearly was a provision that allowed for lapse upon default. With respect, it is not clear to me whether the Court of Appeal was embracing the conclusions by Bignold J in relation to the effect of s 91AA or, more directly for present purposes, his obiter remarks regarding the imposition of a condition on the grant of development consent which provides for lapsing of the consent. The distinction is important in the present case because the development consent upon which the applicant relies is not a deferred commencement consent. I have not been referred to, nor am I now aware of, any decision of this Court which deals specifically with the validity of a condition that specifies lapse of the consent in the manner of condition 37.
44 I am not satisfied that the authorities to which I have been referred, including those already mentioned, are particularly helpful as they each appear ultimately to depend upon a construction of the legislation as it applies to deferred commencement consents. The present case turns upon the effect of an express condition providing for lapse. Although for the purpose of argument the note in Johnson was incorporated into the consent, Rolfe AJA expressly held that, because NPWS made it quite clear it would not require that a licence be obtained, the condition precedent to the deferred commencement condition for a licence to be obtained from NPWS never arose.
45 Section 99 of the EP&A Act, at the relevant date, provided that a consent shall lapse unless the development the subject of that consent is commenced generally within two years or where a notice requiring completion of the development had been issued, the development the subject of a consent must be completed within the time specified in that notice.
46 Section 91(3)(a) at the time provided that a condition may be imposed upon the granting of a consent if it relates to any matter referred to in s 90(1) of relevance to the development the subject of the consent. Under s 91(3)(f) a condition could be imposed to require the carrying out of works (whether or not being works on land to which the application relates) relating to any matter referred to in s 90(1) applicable to the development the subject of the consent. Section 90(1) enumerated and specified the matters which a consent authority shall take into consideration in determining a development application. Included amongst the matters specified were the circumstances of the case and the public interest. No great assistance comes from s 91(3)(f), which is limited to the imposition of a condition for the carrying out of works, because the relevant plans approved by the council in 1995 show that not only works but the erection of buildings is to be carried out in all stages. Ms Jagot, on behalf of the council, concedes that there is a combination of works and buildings involved in stage 1, stage 2 and stage 3. Nevertheless, she says that s 91(3)(a) is sufficiently wide to cover any aspect of the proposal which would at least fall into circumstances of the case. It is the applicant's case that the provisions for lapse of a consent and the power to issue a notice to complete pursuant to s 99 constituted a code and therefore exhaustively defined the power of the consent authority to provide for lapse of a consent or completion of a development.
47 In Carstens v Pittwater Council (1999) 111 LGERA 1 Lloyd J concluded that the matters for consideration listed in s 79C(1) of the EP&A Act (the present equivalent of the former s 90(1)) are not the only matters to which a consent authority may have regard. He regarded the dictates of s 79C as only listing the matters which a consent authority must consider and that, accordingly, the consent authority may also take into consideration other matters not listed. However, he qualified his finding by saying that the relevant considerations are confined so far as the subject matter, scope and purpose of the EP&A Act and any environmental planning instrument allow. With respect, I cannot cavil with His Honour's approach. However, different considerations apply in relation to the effect of s 99. It contains an exception to what is otherwise the statutory power to grant only a final and certain consent in perpetuity, subject to the specific power in s 91(3)(d) to impose a condition which limits the period during which development may be carried out in accordance with the consent.
48 The grant of a development consent is the exercise of a statutory power. It is not a power at large. The EP&A Act was, and is, circumspect about the extent to which conditions may be imposed. There is no direct reference to a power to impose a condition whereby a consent shall lapse as a consequence of failure to comply with a condition of the consent. Section 99 sets out in concise terms the way in which lapse can be avoided by commencement of building, engineering or construction work relating to the development the subject of the consent. Once development is relevantly commenced the Act provides only for the power of the consent authority to issue a notice requiring completion within a specified time. The legislation does not provide for the lapse or termination of the consent for failure to comply with a notice to complete. That failure to comply relevantly becomes a breach of the EP&A Act which can be constrained by the successful bringing of proceedings in this Court pursuant to s 123 of the EP&A Act.
49 Accordingly, the whole of the powers and conditions for the lapsing of consent or the completion of development are to be found within the framework of what was formerly s 99 and is now s 95 of the EP&A Act. The agreement of or collaboration with the holder of the consent does not extend the power to deal with lapse or completion. In this case, the acts of relevant commencement meant the opportunity for lapse had long since passed at the date of modification in 1995.
50 The Court concludes, therefore, that notwithstanding the consent and agreement of the owners of the time the imposition of condition 37 was beyond the statutory power of the council as consent authority. However, whilever the condition remains as part of the consent it does have the legal effect claimed by the council, namely to provide for the consent to lapse. The applicant does not and arguably cannot have a declaration of invalidity in class 1 proceedings. Accordingly, by operation of condition 37, there is no consent upon which the present applicant can rely for the purposes of making an application pursuant to s 96 for modification of that consent (Swadling).
51 Nonetheless, even if the condition does not have legal effect, that would not be an end to the matter. The council has always maintained that irrespective of whether condition 37 is legally valid the applicant, as agent of the persons otherwise entitled to act on the consent, is, in the circumstances, estopped from raising invalidity.
Estoppel
52 The principles stated in the following passage from the judgment of Brennan J in Waltons Stores (Interstate) Ltd v Maher (1988) 164 CLR 387 at 423 was applied by this Court in DTR Securities Pty Ltd v Sutherland Shire Council (1993) 79 LGERA 88 at 98 and are equally applicable to the present case:-
The unconscionable conduct which it is the object of equity to prevent is the failure of a party, who has induced the adoption of the assumption or expectation and who knew or intended that it would be relied on, to fulfil the assumption or expectation or otherwise to avoid the detriment which that failure would occasion. The object of the equity is not to compel the party bound to fulfil the assumption or expectation; it is to avoid the detriment which, if the assumption or expectation goes unfulfilled, will be suffered by the party who has been induced to act or to abstain from acting thereon.
53 At the time condition 37 was inserted in the consent by way of modification the owners entered into an agreement with the council, the conditions of which required the council to:-