16 The third objector who gave evidence during the course on site inspection was Mr Wesley who spoke on behalf of the Uniting Church's property arm concerning impacts on the Uniting Church diagonally across Turramurra Avenue to the south-west of the site. These concerns related to possible construction vibration impacts on the church building, particularly the old Chapel section which is proposed to be listed as a heritage item under the Town Centres LEP. Mr Wesley was also concerned about the possible impact of construction activities on the church's major weekday ceremonial activities, such as funerals, as might take place during the construction phase of the proposal.
17 The applicant has agreed to incorporate the church property in the condition of the without prejudice conditions requiring the preparation of dilapidation reports and we are satisfied that this is an appropriate response to these concerns. In addition, the without prejudice conditions contain a requirement to consult with the church about the scheduling of works during the construction phase in order to ensure, as much as is reasonably possible, that construction activities on the site do not interfere with the churches activities. This, we accept, is an appropriate response to this concern.
18 As the consequence all the foregoing, we are satisfied that the community objections, except to the extent that they supported the remaining issues raised by the council, do not provide any basis for refusal of or warrant any changes to the proposal or have been appropriately accommodated within the without prejudice conditions.
Limitation on development potential of 1 and 3 Nulla Nulla St
19 As earlier noted, as a consequence of the proposed changes to the zone boundary for the R4 zone to be implemented when the Town Centres LEP comes into force, the two properties to the east of the site, 1 and 3 Nulla Nulla St, will be included in the higher density zone within which the site is located rather than in a slightly lower density zone as is presently the case. These positions are shown on the map extracts reproduced earlier.
20 The council now says that permitting the proposed development will have an inappropriate and restrictive impact on the development potential of 1 and 3 Nulla Nulla St. The council does not say, it is important to note, that these sites will be isolated as the council's planning controls have specific provisions relating to isolation of sites and these are not pressed by the council in these proceedings.
21 In addition to the changing zoning boundaries, the Town Centres LEP also includes a variety of maps that record matters to be taken into account when considering development proposals. One of those maps is relevant to the present proceedings - this being a map that shows biodiversity/vegetation corridors and locations to be taken into account pursuant to the Town Centres LEP. Portions of the north-eastern corner of 1 Nulla Nulla Street and of the access handle to 3 Nulla Nulla St are mapped as being affected by the requirement to undertake a biodiversity assessment.
22 The council's position, put by Ms Pearson and Mr Smith, is that permitting the present development would leave 1 and 3 Nulla Nulla St unable to realise anything close to their full development potential of using a permitted maximum floor space ratio of 1.3:1 under the Town Centres LEP. It is the council's contention that, although it would be technically possible to consolidate these two allotments when either 1, 3 and 5 Turramurra Avenue or, if the comparatively new seniors living development on 1 Turramurra Avenue were not to be incorporated, with 3 and 5 Turramurra Avenue, such a development would not realise an appropriate development for such a consolidated site.
23 In this context, it is appropriate to note that cl 25I(3) of the Town Centres LEP provides that any development site in the R4 zone must have at least one street frontage of 30 m. 1 and 3 Nulla Nulla St, by themselves, do not need this requirement and thus, prima facie, could not be developed by themselves.
24 Although an objection to compliance with that requirement, pursuant to SEPP 1, might possibly be made, it is not appropriate for us to speculate on whether or not such an objection would be sustained. We therefore set aside any consideration of that possibility in our assessment of the present issue
25 To some extent, the evidence given by Ms Pearson was based on the assumption that there is a necessity, for policy reasons in reaching strategic targets for increased dwelling numbers, to maximise the yield from all development potential on any site in these higher density zones. Mr Smith's evidence appeared to be similarly based.
26 However, in undertaking an assessment of any proposal (and, in this instance, undertaking an assessment of the present proposal), there are two fundamental flaws in this approach.
27 The first flaw is the assumption, implicit in Ms Pearson's and Mr Smith's evidence, that a development with something close to the maximum permissible floor space ratio should be able to be achieved for any site which incorporated 1 and 3 Nulla Nulla St. This misunderstands the role of prescribed floor space ratio controls. Floor space ratio controls provide both a limit and, for a developer, a target to which they may aspire in designing a development proposal but the floor space ratio most certainly does not comprise an entitlement or near entitlement on any site.
28 The second flaw links inextricably with the first. This flaw ignores the fact that any proposal for any site must be assessed having regard to the constraints on that site. Such constraints may arise from traffic patterns restricting driveway locations; significant trees that are required to be retained imposing development restrictions required by Australian Standard AS4970:2009 to protect root zones and the like.
29 A classic example of such a constraint exists today opposite the site to the south-west - being the Uniting Church site to which we have earlier referred. As noted, the old Chapel on this site is to be listed as a local heritage item when the Town Centres LEP comes into effect. The whole of the significantly sized allotment upon which the church buildings are located is also to be zoned R4 for high-density redevelopment by the Town Centres LEP. This is an alteration to the zoning from the present church purposes zoning under the KPSO.
30 It was Ms Pearson's evidence that the presence of a heritage item on this allotment would not permit redevelopment of that allotment to achieve its "highest and best use" without the demolition of the heritage item occurring. By "highest and best use", in this context, we understand her evidence to mean a development approaching or tending toward the maximum permitted floor space ratio. This site demonstrates, in a local context, a classic example of how constraints on development on a particular site must be taken into account when assessing the development potential of that site.
31 Similarly, for 1 and 3 Nulla Nulla St, the biodiversity mapping earlier referred to also represents a constraint, on those allotments, to be considered when assessing any future development proposal. We need not speculate about how that biodiversity mapping may constitute a design restriction that would cause some limitation on the development potential of any site which included those allotments (whether a hypothetical consolidation with the site of the present proposal or some alternative consolidation pattern) - merely to note its existence.
32 In this instance, if the presently proposed development were to be approved, a variety of street frontage compliant development opportunities incorporating 1 and 3 Nulla Nulla Street would be available. They would include consolidation with 1, 3 and 5 Turramurra Avenue; with 3 and 5 Turramurra Avenue or an across zone boundary redevelopment with allotments fronting Nulla Nulla Street to the east of 1 and 3. Any one of these redevelopment options would necessarily contain a variety of design challenges but would all have available compliant street frontages as required by cl 25I(3) of the Town Centres LEP. Meeting the design challenges of any of these would require consideration and response to the constraints of any one of these hypothetically available consolidations. Whilst the constraints of any one of these hypothetical consolidations might, indeed probably, would impose design limitations that would restrict the floor space ratio yield on such a site, we do not consider that the council has demonstrated that, in any practical sense, those restrictions would effectively cancel out of the development potential arising from the change in zoning of 1 and 3 Nulla Nulla Street. As a consequence, we do not accept that the possible impact on the development potential of 1 and 3 Nulla Nulla Street warrants refusal of his proposal.
33 For completeness with respect to this aspect of the council's concerns, we reject the evidence given by Mr Smith that using 1 and 3 Nulla Nulla St as an access point, for development on a consolidated site combining the Nulla Nulla Street frontage properties and properties fronting Turramurra Avenue (if such an access point were desirable for traffic conflict or any other reasons) would inappropriately restrict the development potential of the Nulla Nulla Street frontage properties. Whilst some constraints might arise, those, too, are matters to be considered in any design process for such a development and its subsequent consent assessment.
The SEPP 1 objection to compliance with setback requirements
34 The applicant relies on an objection pursuant to SEPP 1 being sustained to permit non-compliance with zone interface setback requirements with 1 and 3 Nulla Nulla Street as required by cl 25L(2) of the KPSO. The joint expert evidence of the town planners and the council's urban designer is that, given the imminence and certainty of the Town Centres LEP, this objection should be sustained. We have considered the terms of the SEPP 1 objection and, as we agree with the conclusion that they have reached, the objection should be sustained.
35 Mr Robson did not seek to persuade us that this conclusion is incorrect. However, he did submit that the necessity for this SEPP 1 objection and the second SEPP 1 objection, discussed below, concerning floor area of the uppermost level, is an indication that the bulk and scale of the proposal is too great and provides reinforcement for the reasons advanced by the council as to why the SEPP 1 objection concerning the uppermost level of the proposal should be rejected.
36 Given the conclusion we have reached concerning that separate issue, as discussed below, it is not necessary for us to consider, further, this argument - save to note that we have not adopted this submission in our reasons for supporting the council's contention concerning this uppermost level.
The uppermost level floor area control
37 As earlier noted, the KPSO contains a control governing the floor area of the uppermost floor of any residential flat building that has more than three floors. The control is in the following terms:
(7) Limit on floor area of top storey
In Zone No 2 (d3), where the maximum number of storeys permitted is attained, then the floor area of the top storey of a residential flat building of 3 storeys or more is not to exceed 60% of the total floor area of the storey immediately below it.