Step 1 ; Involves an assessment of the views affected .
In this case, water views of the Parramatta River, foreshore parkland and treed ridge-lines are available in varying degrees from 9 of the effected neighbouring units.
Step 2; Requires consideration from what part of the property the views are obtained, recognising that protection of views across side boundaries is more difficult than protection of views from front and rear boundaries .
The respective photographic evidence indicates the degree of view intrusion by the proposed restructure, in various living and bedrooms, along the side boundaries. From my observations on the view, I am inclined to accept Mr Layman's evidence that in most cases where view loss occurs from living rooms, acceptable alternative views are available from within the unit.
Step 3 ; Requires an assessment on the extent of the impact, in terms of the whole of the property, not just for the view that is affected.
In my assessment, the identified 9 units affected represent a significant number, considering they are relatively small units, within a medium density area, where outlook to part water views or landscape areas, adds to their amenity.
Step 4; Is to assess the reasonableness of the proposal that is causing the impact. A development that complies with all planning controls would be considered more reasonable than one that breaches them. Where an impact on views arises as a result of non-compliance with one or more planning controls, even moderate impact may be considered unreasonable. With the complying proposal, the question should be asked whether a more skilful design could provide the applicant with the same development potential and amenity and reduce the impact the view of the neighbours…
In my assessment this is the most critical test in this matter. The proposed tennis court structure results in a relatively high 3-storey structure, that exceeds the 2-storey design control.
39 In summary then, I am satisfied that the proposed roof structure does impact on the views currently enjoyed by 9 of the adjoining residential units and No 359. While the intrusion into the views of the waterway and foreshore parklands from the individual units varies, nevertheless I am satisfied it can be classified as a moderate impact, which results in a negative impact rather than any enhancement of views. Taking into account that the intrusion is caused by the elevated tennis court roof of non-complying height, which enables this area to be used for occasional recreation by the property owner, I do not consider there is a reasonable balance that results in Test 4 being satisfied in this context.
40 The issue of overshadowing was also raised and addressed by the planning experts. From the shadow diagrams, they agree that all neighbouring units, except Unit 2, comply with the shadowing provisions in section 6.9 of the CDCP. This requires that:
M1 Windows to north-facing living areas are to receive at least three hours of sun (on at least a part of the surface) between 9 a.m. and 5 p.m. on 21 June .
41 Because of its lower-level position, the north-facing windows in Unit 2 will only receive approximately two hours of sun at the designated time. In these circumstances, I rely on Mr Young's opinion that this degree of overshadowing is not sufficient to warrant the rejection of the application.
42 The next issue concerns the impact of illumination/light spill from the tennis court lighting, when used until 10 p.m., on some nights. This issue was addressed by Mr Waldman, based on the provisions of Australian Standard As4282, which deals with limits to obtrusive outdoor lighting.
43 From this standard, he made the following assumptions for room reflectance's of the covered pavilion; ceiling - 20%, walls - 50% and floor - 20% and also an allowance of 10% light loss transmission through the blinds. Consequently he concluded that the installation would not be obtrusive.
44 However in cross examination, he was unsure of the actual specification for the PVC blinds and availability. Consequently, he was unable to assist the Court as to whether the recreational activities, or silhouettes would be observable through the blinds during recreational use, particularly night time. Whilst I note the applicant's submissions in this regard, that further submission of specified material, or conditions of consent could cover this, my impression is that this a deficiency in this sensitive application.
45 Another amenity issue concerns noise impacts. This was assessed by Mr Atkins by way of noise measurements conducted on the roof of the subject site. For normal tennis activities, he says that maximum noise levels generated range between 53 and 70dB(A) measured at 5 m from the sideline of the court. In terms of the noise measured over a 15 minute period in accordance with DEC (EPA), normal levels range between L A10 50 and L A10 55dba at 5 m from the sideline of the court and L A10 47 to L A10 52 dba at 10 m. Therefore he considers that a reasonable assessment goal is 48dB(A).
46 From previous investigations and assessments for noise mitigation effects of roof insulation and the plastic curtains, he says that a noise reduction of between 8 - 10dB(A) can be achieved, with the curtains closed. Taking into account the additional mitigating effect of the existing roof top concrete upturn, which is in the order of 3 - 10 dB(A),then the assessment goal would be achieved with the curtains rolled down.
47 But in cross examination, Mr Atkins admitted that he did not undertake any noise assessment for the rooms in No 359, which is the closest building, because it is owned by the applicant. Nevertheless, he estimated that at the existing 4.5 m separation distance, the noise level would be in the order of 49dB(A), thereby marginally exceeding the assessment goal.
48 From this evidence, it seems to me that the potential noise disamenity from the enhanced recreational use of this roof top area is likely to increase and the mitigation measures are at best borderline. There are likely to be circumstances where the assessment goal will be exceeded, particularly when tennis is played at the back line, adjacent to No. 359. Therefore, extraordinary management procedures seem necessary to ensure that the blinds are always closed, when most recreational activities are being undertaken to avoid unreasonable disamenity. From a practical viewpoint, I consider this borderline situation is a further negative aspect of the proposal, allowing for the assumptions made in estimating the assessment goal.
49 An associated issue concerns the heat control of the enclosed tennis court, considering it must be enclosed to minimise noise and the light disamenity. This was assessed by Mr McComb on the basis that the three surrounding curtain walls remained closed during activity, with the western elevation open. This opening, together with the roof ventilation duct between the barrel vault and the reverse wave/upturn section, allows air replacement and circulation in accordance with a "stack" effect.
50 The resulting heat load for the structure based on a summer day temperature of 30.5oC, with lights on and 10 people occupying, can apparently be accommodated by this stack effect. Therefore Mr McComb is satisfied that the enclosed structure can be adequately ventilated naturally.
51 The issue of impact on property values was raised after the appeal proceedings commenced. Mr Doncass undertook valuation of the aforementioned 9 residential units, to estimate their current market value.