As a matter of principle, at a zone interface as exists here, any development proposal in one zone needs to recognise and take into account the form of existing development and/or development likely to occur in an adjoining different zone. In this case residents living in the 2(b) zone must accept that a higher density and larger scale residential development can happen in the adjoining 2(c) or 2(d) zones and whilst impacts must be within reason they can nevertheless occur. Such impacts may well be greater than might be the case if adjacent development were in and complied with the requirements of the same zone. Conversely any development of this site must take into account its relationship to the 2(b) zoned lands to the east, south-east, south and south-west and the likely future character of those lands must be taken into account. Also in considering the likely future character of development on the other side of the interface it may be that the development of sites such as this may not be able to achieve the full potential otherwise indicated by applicable development standards and the like.
52 Adopting and applying those principles to the present case, I note that the separation distance, the treatment of the upper floor and the proposed landscaping between Dwelling 3 and the houses in Wallaroy Avenue will assist in mitigating the impacts of the proposal. However, due to the change in level, the height and bulk of the proposal will be accentuated and will have an overbearing impact from the rear garden area of 26 Wallaroy Road. Based on the section in DA-GA-04B the height of Dwelling 3 will be about 16m above the garden level. The landscaping will obscure the lower levels of Dwelling 3 but its overall height will be visible. While the rear setback and height comply with the controls, the impact is beyond that envisaged by these controls given the topography of the site and its relationship to dwellings at the rear. A proposal, which recognized these constraints by either increasing the setback or reducing the height, would achieve an impact more consistent with that envisaged by the controls.
53 Dwelling 3 extends beyond the building line of 22 Roslyndale Avenue. The proposal will impact on the amenity currently enjoyed by this property. Particularly the outlook from the living area which is partly orientated towards the site and will look into the blank wall of the rear of the proposal rather than the outlook to trees that it currently enjoys. Again, while the rear setback complies with the control, a proposal, which better maintained the relationship of building to building, would reduce the impact on 22 Roslyndale Avenue.
54 The proposal will be visible from certain vantage points in Wallaroy Road and the surrounding area. From Wallaroy Road the northern section of the proposal will be visible. The proposal is stepped up the slope which will reduce its impact, however, due to the retaining walls and the limited opportunity for landscaping within the planter boxes on the terrace area, four levels of the proposal will be visible, albeit screened to some extent by the canopy tree which is to be retained on the site.
55 The site is within an area zoned for residential flat buildings, however, under cl 8(4) this zoning is subject to Parts 3 and 4 of LEP 1995. Clause 10B in Part 3 of LEP1995 relates specifically to residential flat buildings. For sites with three dwellings or less the site frontage is the applicable control. The proposal does not comply with this control and the objectives of the control include compatibility between the scale, density, bulk and landscape character of buildings and allotment size. Neither Roslyndale Avenue which is zoned 2(b), nor Wallaroy Road which is zoned 2(a) are areas in transition, the proposed building and its allotment size do not achieve the compatibility required by cl 10(a).
56 For the above reasons, the SEPP 1 objection is not well founded and the granting of consent to the development application would not be consistent with the aims of SEPP 1. The application must therefore fail.