consideration
Noise
14The acoustic issues associated with the development are raised in two contentions by the Council. The first is that the site is located directly adjacent to two significant noise generating uses being an arterial road (Wyndham Street) and the Raglan Hotel. The Raglan Hotel is not presently operating, however its permissible trading hours are until 12 midnight Monday to Saturday. The Council contends that compliance with its acoustic requirements would require the external windows and doors to remain closed, which would not comply with the requirement in the RFDC that 60 percent of apartments benefit from cross flow ventilation and that all apartments be provided with a minimum 2m balcony for the enjoyment of outdoor living. The Council further contends that there are concerns about impact of traffic noise from Wyndham Street which is a major arterial road, and structural borne noise transmission between the Raglan Hotel and the proposed development.
15In his Statement of Evidence Mr Haydon expressed the opinion that during hours outside the hours of maximum road traffic noise levels, with the exception of one window of the development, all windows to habitable rooms could be opened at various times of likely use and achieve compliance with the relevant acoustic criteria and standards. Mr Haydon stated that in order for the maximum internal reverberant noise levels to be complied with, windows would need to be closed in bedroom 1 and the living room of units 1, 3 and 4; and the two bedrooms in unit 2. The study in units 1 and 3; the living room and bedroom 1 in unit 2; and bedroom 2 in unit 4, would comply with the maximum internal reverberant noise levels with the window open. Mr Haydon was of the opinion that each unit would have at least two windows that could remain open at all times for ventilation, being windows in the study and laundry in units 1 and 3, the living room and bedroom 1 in unit 2, and the kitchen, bathroom and bedroom 2 in unit 4.
16Mr Keranovic and Mr Haydon agreed that the recommendations made in the acoustic report prepared by Acoustic Dynamics dated 10 March 2010 would achieve compliance with the minimum criteria and requirements. Those recommendations included provisions for construction of the external walls, ceiling and roof system, and windows and glass doors. The experts agreed that acoustic compliance testing for noise intrusion to the development should be conducted when the hotel is operating. While the experts agreed that the acoustic aspects would not be grounds for refusal and could be the subject of a condition, they disagreed as to the wording of such a condition. Mr Keranovic was of the opinion that the specific recommendations should form part of the conditions, as failure to do so may not ensure construction that would protect from structural/ air borne noise transmission between the residential units in the development, particularly when the neighbouring licensed premises were operating. Mr Haydon considered that conditioning specific construction is not necessary, and that the condition should reflect the acoustic criteria so that compliance could be demonstrated with a compliance assessment report submitted prior to the issue of a construction certificate.
17Based on the agreement of the experts, I accept that the minimum acoustic requirements for structural and airborne noise transmission can be addressed by compliance with the recommendations of the Acoustic Dynamics report of 10 March 2010, and can be made the subject of a condition. Given the findings on other issues below, it is not necessary to reach a conclusion on the wording of such a condition. Mr Haydon's evidence as to which windows could remain open while achieving compliance with internal noise reverberant level requirements was not contradicted, and I accept it. That evidence establishes that it will be possible to have some windows open for ventilation, and the relevance of that in assessment of the amenity for future residents of the residential apartments in the context of the provisions of the RFDC and the DCP is discussed below.
Zone objectives
18The Council contends that the proposed development does not satisfy the zone objectives in cl21(1)(a), (b) and (h) of the LEP. It contends that the potential noise and other impacts from the adjoining Raglan Hotel on the proposed residential uses result in an unacceptable tension and mean that the uses are not mutually supportive or compatible. In their joint report the expert planners agreed that provided the noise impacts of the adjoining hotel can be satisfactorily resolved, the proposed development is not inconsistent with the zone objectives. The acoustic experts agreed that compliance with the recommendations in the acoustic report prepared by Acoustic Dynamics dated 10 March 2010 for construction methodology would achieve compliance with minimum acoustic criteria, and that there should be an acoustic report provided on completion of construction, when the neighbouring hotel is operating, verifying that habitable rooms in the closest residential unit are not affected by offensive noise. The expert planners were in agreement that the potential noise impacts of operation of the hotel would not be such as to make the proposed development inconsistent with the objectives in cl21(1)(a), (b) and (h) of the LEP. Given my conclusions on other contentions discussed below, it is not necessary to reach a conclusion as to whether the proposed development is consistent with the zone objectives.
Height and floor space ratio
19The total height of the proposed development is 13.7m including the roof top terrace. Under the DCP the height control limit for the site is 9m. This height limit applies to the development along the eastern side of Wyndham Street to the intersection with Buckland Street, and also to the area to the north west of the site on the northern side of Wyndham Street. The height limit applicable to the western side of Wyndham Street is 6m.
20The objective of the height controls is:
To ensure buildings:
· Are appropriate in scale, compatible and complementary with areas of townscape significance, the site and its context.
· Do not dominate and overshadow the Public Domain.
· Achieve high environmental amenity.
21Part 2.3 of the DCP states in relation to the height controls:
Where the height specified in the Height Control Map is varied in exceptional circumstances for 'infill' linear development, building height does not exceed the 'building envelope control line' determined by the width of the street specified by the formula for street height. (Refer to Figure E-1)
...
In special circumstances Council may support a part storey above the prescribed height limit provided the part storey is wholly within the 36 degree Attic height plane as defined.(Refer to Figure E-3)
22Mr Lovell's evidence was that Wyndham Street is approximately 20m wide and so applying the formula at part 2.3 of the DCP the maximum building height would be 21.6m. The proposed upper level is accommodated within a plane formed by projecting a line at 36 degrees from the ceiling level of the floor below from the front and rear boundaries, which is consistent with the attic control in figure E-3. In Mr Lovell's opinion, the proposed development has been designed to fit comfortably within a building envelope formed by the 9m height control and the 36 degree "attic" height plane, projected from the front and rear boundaries. In addition the front wall facing Wyndham Street has been designed to effectively match the level of the upper most cornice of the hotel, and the height of the front wall facing Wyndham Street is consistent with the predominant building height along the eastern side of the road carriageway. In his opinion, the exceptional circumstances justifying departure from the height limit control are that the site is small and as infill development it is difficult to comply; there is no impact on amenity from the upper level; it is a long and narrow block and the upper level accommodation is recessed from the street frontage with little visual impact; there are many buildings with recessed top levels visible from the site; and there is little consistency on the eastern side of Wyndham Street. Mr Lovell agreed that the mere fact that this is infill development does not constitute exceptional circumstances, and that the upper level did not technically fit the definition of "attic" in the DCP. While agreeing that the heights along Wyndham Street were varied, Ms Aziz' evidence was that the heights varied from 9m to lower and there was no variation above the control. Ms Aziz agreed that the site is narrow, however it is not unusual in that constraints limit development on it. In her opinion the site is suited to commercial rather than residential development.
23While not determinative, the provisions of the DCP are a fundamental element and a focal point of the decision-making process: Zhang v Canterbury City Council (2001) 115 LGERA 373. The DCP itself recognises that departures from the height limits may be justified. It was common ground that the proposed development is infill development, and Mr Lovell accepted that that alone does not constitute exceptional circumstances justifying departure from the height limit. The applicant submitted that the inclusion of the top floor unit enables at least one unit in the development to achieve solar access. I am not persuaded that that would constitute exceptional circumstances such as to vary the height limit. The evidence from the view supports Ms Aziz' evidence that variations to the 9m control along Wyndham Street are variations below 9m, and that the buildings on either side comply with the 9m height limit. In that context, I am not satisfied that any of the other factors identified by Mr Lovell constitute an exceptional circumstance as required in the DCP, or are such as to warrant departure from the general controls provided in it. Approval of the proposed development would not assist in achieving the objectives of the height control, which include that the building be compatible and complementary with its context.
24The proposed development has an FSR of 1.84:1, which exceeds the maximum FSR set out in part 2.2 of Part E of the DCP of 1.5:1. The objective of the control is:
To control the floor space of new development to ensure its intensity respects and reflects the overall built form and does not detrimentally affect the amenity of the area.
25Mr Lovell's evidence was that the "excess" floor space is represented by approximately 72.6sqm, and that the upper level of the proposed building has a gross floor area of approximately 100sqm; in his opinion, the visual impact of the upper level is relatively minor and acceptable. Having concluded that departure from the height limit is not warranted in the context of other development in the locality, I am not persuaded that the departure from the control in the DCP represented by the additional level would be consistent with the objective of ensuring that the intensity of development respects and reflects the overall built form.
Amenity: SEPP 65 RFDC
26The Council contends that the proposed development does not comply with the amenity requirements in Principle 7 of the SEPP65 RFDC, on the basis that there is insufficient separation between proposed unit 2 and the adjoining site; that the proposed units cannot achieve acceptable levels of solar access to principal living areas; and that the proposed units cannot meet the requirement that 60 percent of units benefit from natural cross flow ventilation.
27The expert planners agreed that the building separation is acceptable, and this contention was not pressed. The planners agreed that solar access cannot be provided to 70 percent of the living rooms or private open space for a minimum of 2 hours between 9am and 3pm due to the orientation of the site and the nature of surrounding development; however, they disagreed as to whether the available solar access was acceptable in the circumstances. The planners disagreed on whether the restrictions on the opening of windows to meet acoustic requirements was acceptable.
28The Council submits that a less intensive development could be able to achieve improved levels of solar access. The applicant submits that while accepting that not all the apartments would get good direct sunlight, overall the aspect and daylight access is not deficient in the context of the general Sydney housing market. The RFDC states that it is acceptable to have up to 10 percent of units facing south. Solar access for unit 4 is good, and the other units demonstrate good design with internal courtyards and orientation. If the top level unit were removed the proposed development would comply with the FSR and building height controls, however that would mean that none of the units would achieve direct solar access.
29Mr Lovell's evidence was that the east-west orientation of the site with the adjoining building to the north limits solar access to the site during the midday period in mid winter, and that the proposed apartments incorporate main living rooms and private open space oriented towards the east and/or west, and internal solar access has generally been maximised in the context of the site constraints and orientation. Solar access has been maximised through provision of a single, two storey, apartment oriented towards the rear boundary with the upper level incorporating an internal void to the living room below, and units 1 and 3 have been designed with recessed balconies along the Wyndham Street frontage to provide north facing openings to the open plan living areas extending as corner windows on the western faade.
30Part 3 Building Design of the RFDC includes provisions for building amenity, including daylight access and natural ventilation. The rule of thumb for daylight access is:
Living rooms and private open spaces for at least 70 percent of apartments in a development should receive a minimum of three hours direct sunlight between 9am and 3pm in mid winter. In dense urban areas a minimum of two hours may be acceptable.
31The RFDC states that it is better design practice to limit the use of lightwells as a source of daylight.
32Part 5.1 of the DCP includes as a control that solar access reaching principal living area windows and to a minimum of 50 percent of the private open space is maintained for at least two hours, between 9am and 3pm at 21 June.
33Mr Lovell was of the opinion that the extent of solar access is reasonable and acceptable in the circumstances. Ms Aziz accepted that all the units would get daylight, but not sunlight, through the voids. Ms Aziz agreed that if skylights were incorporated into the design, there could be additional daylight, however she was of the opinion that this was not an appropriate way to provide for direct sunlight in a new development.
34The shadow diagrams provided by the applicant were prepared for the proposed development including, and excluding, the development application for 10 Henderson Road currently under assessment. Based on these shadow diagrams, unit 2 would receive approximately 2.5 hours of sunlight to the living rooms and a portion of private open space between 9.30am and midday in mid winter. If 10 Henderson Road is built, that would be reduced. Mr Lovell and Ms Aziz agreed that at midday there would be slivers of sunlight to the upper level window which would extend to a limited extent to the living and dining areas below. Units 1 and 3 would receive solar access to the main living rooms and portions of their private open space for approximately 1.5 hours between 1.30 and 3pm. Unit 4 would receive solar access to the main living room and the majority of private open space for approximately 1 hour between 2pm and 3pm.
35Based on the evidence of the expert planners, and the shadow diagrams provided by Mr Lovell, I am satisfied that none of the proposed units can achieve three hours of direct sunlight between 9am and 3pm, or even the two hours regarded by the RFDC as acceptable in dense urban areas. The rule of thumb in the RFDC is not determinative, however its provisions are relevant to an assessment of the amenity provided to residents of the proposed units. None of the units meet the requirements of the DCP for solar access.
36The RFDC provisions for natural ventilation state as their objective to ensure that all habitable rooms have direct access to fresh air and to provide natural ventilation in non-habitable rooms, and to reduce energy consumption by minimising the use of mechanical ventilation. Part 2.4.2 of the DCP states as an objective ensuring that residential flat buildings are naturally ventilated to a high standard.
37Based on the acoustic evidence, not all windows to habitable rooms in all units could remain open and achieve compliance with acoustic requirements. The Acoustic Dynamics report of 10 March 2010 notes that to provide occupants of the development an appropriate acoustic amenity, "mechanical ventilation is required to be provided to all residential units within the proposed development". Mr Lovell's evidence was that while some mechanical ventilation would be required, the opening of some windows would contribute to natural ventilation. I am not satisfied that the restrictions on natural ventilation required in order to address acoustic issues are consistent with the design principles and objectives of the RFDC and the DCP.