83Mr Colstock disagrees with Mr Kings assessment. He states that to achieve the 70% requirement, it has been necessary to extend the assessment hours to 8 am to 4 pm rather than the hours specified in the RFDC of 9 am to 3 pm. Mr Colstock maintains that the use of the extended hours is flawed as the low angle of the sun at these times will produce direct glare and consequently can be a problem rather than providing useful light. Also, Mr Colstock maintains that the use of the 2-hour standard is not appropriate in the circumstances. In his opinion, compliance should be measured against a 3-hour period, as the site is not within a "dense urban area(s)".
84On the issue of solar access, I agree with the conclusions of Mr King. As a starting point, I accept that the site is located in a "dense urban area(s)". While the RFDC does not define this term, I am satisfied that an area that contemplates a maximum height of 22m and an FSR of 1.65:1 can be regarded as a "dense urban area(s)". On this basis, the appropriate requirement in the Rules of Thumb is at least 70% of apartments should receive a minimum of 2 hours direct sunlight between 9 am and 3 pm in mid winter.
85The proposal provides 64% and while this does not satisfy the 70% requirement, and while it is not optimal, it is acceptable in the circumstances. The site has a its long axis in an east-west direction and consequently a long south facing boundary to Bay Street. The site also has a 6 storey building near its northern boundary (9-19 Myrtle Street) that could compromise solar access to the northern aspect of any design however, In this case, I accept that the design is well considered through the location of the building away from the northern boundary so that solar access is maximised to its northern elevation.
86I do not accept that the RFDC should be read as a development standard or a requirement that must be complied with. In the second dot point, the Rules of Thumb contemplate variations to the requirements. Also, the definition in the RFDC for of Thumb supports the application of a flexible approach where it states:
rules of thumb recommend minimum standards as a guide for local decision making. Minimum standards may vary depending on local context issues and/or if development applicants are able to demonstrate that they have addressed the better design practice guidelines and achieved the stated objectives.
87In this case, I am satisfied that the minimum 70% standard can be varied given the relatively small variation (10 units out of 158 units excluding any benefit from the deletion of 4 units), the sunlight available between 8 am and 4 pm, the orientation of the site and the design that seeks to maximise solar access to the northern face of the building.
Natural ventilation
88Clause 4C.5.6 Natural Ventilation of DCP 2013 states:
Objectives
O1 To provide all habitable rooms with access to fresh air; and
O2 To minimize the need for mechanical ventilation.
Control
C1 Residential flat buildings shall comply with the principles and provisions of State Environmental Planning Policy No 65 (SEPP 65) and the Residential Flat Design Code in relation to natural
ventilation as illustrated in Figure 17.
89The Rules of Thumb for Natural Ventilation in the RFDC (p 87) state:
+ Building depths, which support natural ventilation typically range from 10 to 18 metres
+ Sixty percent (60%) of residential units should be naturally cross ventilated
+ Twenty five percent (25%) of kitchens within a development should have access to natural ventilation
+ Developments, which seek to vary from the minimum standards, must demonstrate how natural ventilation can be satisfactorily achieved, particularly in relation to habitable rooms
90Mr King states that 101 of the 158 units are cross ventilated. This provides for 63.9% thereby satisfying the 60% requirement. The cross ventilation is achieved through different means and the details are set out in the table attached to Mr Kings report. The report relevantly states:
+ Apartments are characterised as cross ventilated by virtue of having appropriate openings and air paths between the two principal facades and are included without further discussion.
+ A number of top floor apartments that do not have conventional openings in two or more facades, are provided with appropriately positioned 'pop-up' monitors or skylights with controllable ventilation. These apartments are conventionally considered to have effective cross ventilation in conditions of any wind direction.
+ Apartments with suitable high level ventilation openings to open gallery access.
+ Apartments with ceiling ventilation plenums connected to the facade.
91Mr Baker addressed the issue of cross ventilation for the council. He states that detail of the ventilation plenums were not provided and the skylights to the top floor units were shown as "light tubes', which would not facilitate cross ventilation. Also, any openings for cross ventilation in the common circulation spaces could result in unacceptable acoustic privacy issues. In his assessment, there are less than 50% of the units with cross ventilation.
92On this matter, I accept that cross ventilation is acceptable. Based on Mr Bakers concerns over the design of the plenums, further details were provided during the hearing (Exhibit L). As I understand, It was also agreed that the change from light tubes to openings to allow for cross ventilation could be addressed by way of a condition and any concern over any openings for cross ventilation in the common circulation spaces could be addressed through a modified plenum design.
93In this case, I am satisfied that the minimum 60% standard is achieved through the different methods of cross ventilation as described by Mr King.
Natural lighting
94Clause 4C.5.3 Building Depth of DCP 2013 relevantly states:
Objective
O1 To provide adequate amenity for building occupants in terms of sun access and natural ventilation.
Controls
C1 Use building depth in combination with other controls in this Part to ensure adequate amenity for building occupants. For example a deeper floor plan may be acceptable where higher floor to ceiling heights allow solar access or where apartments have a wider frontage.
C2 For residential flat development the maximum building depth shall comply with Figure 15. The maximum depth of the building is 18 metres.
C3 The maximum depth of a habitable room from a window, providing light and air to that room, is 10 metres.
C4 Single aspect apartments are to have a maximum depth of 8 metres from a window
95The Rules of Thumb for Apartment Layout in the RFDC (p 69) state:
+ Single-aspect apartments should be limited in depth to 8 metres from a window
+ The back of a kitchen should be no more than 8 metres from a window
+ The width of cross-over or cross-through apartments over 15 metres deep should be 4 metres or greater to avoid deep narrow apartment layouts
+ Buildings not meeting the minimum standards listed above, must demonstrate how satisfactory daylighting and natural ventilation can be achieved, particularly in relation to habitable rooms (see Daylight Access and Natural Ventilation)
96Mr King accepts that there are a number of units that are deeper than 8m to the back of the kitchen however the maximum depth is 10m. In his opinion, the control is only meaningful in relation to daylight quality and natural ventilation and in this case, the units beyond 8m in depth still compare favourably for daylight quality and natural ventilation with units that satisfy the 8m depth. Mr Colstock disagrees and maintains that the 8m requirement is generous and that a more appropriate distance is around 6.75m.
97The extent of the variation to the 8m requirement was not provided however I generally accept the conclusions of Mr King. I have previously found that the proposal is acceptable in regard to Daylight Access and Natural Ventilation based on the RFDC. An inspection of the application reveals that units that exceed 8m in depth have different orientations. The additional depth beyond 8m for north facing or generally north facing units is unlikely to be problematical given their desirable aspect. For other units, daylight quality is likely to be less desirable but not to the extent that this matter would warrant the refusal or redesign of the development.
Unit size
98Clause 4C.5.1 Dwelling Mix, Room Size and Layout of DCP 2013 relevantly states:
Controls
Apartment Size and Mix
C1 Dwellings within residential flat buildings must be designed to provide the following minimum internal areas:
Studio: 60m²
1 bedroom: 75m²
2 bedrooms: 100m²
3 bedrooms: 130m²
4 bedrooms: 160m²
Note: Dwelling size means the area inside the enclosing walls of a dwelling but excludes wall thickness, vents, ducts, staircases and lift wells.
99The Rules of Thumb for Apartment Layout in the RFDC (p 69) state:
+ If council chooses to standardise apartment sizes, a range of sizes that do not exclude affordable housing should be used As a guide, the Affordable Housing Service suggest the following minimum apartment sizes, which can contribute to housing affordability (apartment size is only one factor influencing affordability)
1 bedroom apartment 50m2
2 bedroom apartment 70m2
3 bedroom apartment 95m2
100The Apartment Layout part of the RFDC also provides a range of unit sizes for different number of bedrooms and configurations which are generally equal to or greater than the minimum sizes set out in the Rules of Thumb.
101Unit size was not raised as a significant matter until final submissions. The experts paid little attention to this matter in their oral and written evidence although it was identified in the contentions. Mr Chambers states that the proposed development fails to comply with DCP 2013 and provides for 1 bedroom units that are between 50.7sq m to 67.5 sq m, 2 bedroom units that area between 78.1 sq m to 93.8 sq m and 3 bedroom units that are 98.1 sq m to 98.9 sq m.
102Mr Chambers states however that cl 6 of SEPP 65 means that the minimum size of units in SEPP 65 prevails over the size of units in DCP 2013 and as such the proposed unit sizes are not matters that can support the refusal of the application.
103I concur with the comments of Mr Chambers on this matter.