12 Clause 28(4) of the GPSO states:
(4) A person must not carry out development for the purposes of a residential flat building on land to which this clause applies unless all portions of the residential flat building comply with the following requirements:
(a) planes must be projected at 45 degrees from a height of 3.5 metres above natural ground level at the side and rear boundaries to a maximum height of 10 metres above natural ground level in Zone No 2(b) and 12 metres above natural ground level in Zone No 2(c), 3(a) or 3(b),
(b) the vertical distance measured from the highest point of the floor of the topmost floor above natural ground level must not exceed 4 metres in Zone No 2(b) and 6 metres in Zone No 2(c), 3(a) or 3(b).
13 Clause 45B deals with development in the vicinity of an item of the environmental heritage and states:
45B. The Council shall not grant consent to a development application to carry out development in the vicinity of an item of the environmental heritage unless it has made an assessment of the effect which the carrying out of that development would have on the historic, scientific, cultural, social, archaeological, architectural, natural or aesthetic significance of the item of the environmental heritage and its setting.
14 The effect of the building envelope control in cl 28(4) of the GPSO and of the top floor height control applied together is to achieve a maximum height of three storeys perhaps with a pitched roof. On a flat site, the wall height of a building that complies with the controls of cl 28 of the GPSO would be around 9m, calculated by adding a full floor height to the 6m top floor height control. With a maximum height of 12m applying the roof could pitch from 9m to 12m at the ridge. This is the maximum height that should be considered for development on sloping ground in order to maintain views over the top of downhill development and to encourage 'view sharing'.
15 Other planning controls that apply include:
· Environmental Planning and Assessment Act 1979 - Section 79C.
· State Environmental Planning Policy No 71 - Coastal development.
· Local Government Act 1993 - Section 89.
· State Environmental Planning Policy No 1 - Development Standards.
· State Environmental Planning Policy No 65 - Design Quality of Residential Flat Buildings.
· Development Control Plan No 100 - Medium Density Residential Development.
· Development Control Plan No 106 - Controls for site Waste Management.
· Development Control Plan No 108 - Energy Smart Homes.
· Development Control Plan No 165 - Water Cycle Management.
· Development Control Plan No 111 - Carparking.
· Draft State Environmental Planning Policy (Application of Development Standards) 2004.
· Development Control Plan No 34 - Heritage.
· Draft Local Environment Plan - Heritage.
The proposal and its history
16 The council received, on 18 February 2005, the new development application to construct a penthouse apartment on top of an approved residential flat building on the land.
17 Development Consent No 24708/2004 had been previously granted by the council on 22 December 2004, to demolish the existing motel on the land and to erect a three-storey residential flat building containing nineteen (19) apartments and one level of basement car parking with forty-five (45) car parking spaces. The motel has been demolished and the approved development is presently being constructed.
18 It is proposed to add a new penthouse apartment on top of the building containing three (3) bedrooms with a floor area of 189.34m2. Terraces are proposed on the northern and western sides of the new penthouse with access to the terrace from the living/family/dining rooms. Lift access would be provided. The penthouse floor is setback from the outer edges of the approved building.
19 The proposed finished floor level (FFL) of the basement car park level would be RL -0.085m to RL 0.000m AHD. The FFL of ground, first and second floors approved would be 2.850m, 5.700m and 8.550m AHD respectively. The proposed FFL of the penthouse apartment would be 11.400m AHD. By letter dated 14 December 2005 Mr P W Barclay, Registered Surveyor, confirmed that the constructed level of the first floor [meaning ground floor level] of the building under construction is 2.91m AHD and 60mm over the approved height of 2.850m AHD. This difference is immaterial to the Court's consideration in this matter however, hopefully the principal certifying authority will ensure that the difference in levels can be absorbed in the overall height of the approved building so that the roof level is no higher than the approved 14.250m AHD.
20 The height from natural ground level to the floor level of the penthouse (top floor height) would be around 8.95m. Thus the proposed penthouse top floor height would exceed the 6m height development standard of Clause 28(4)(b) of the Gosford Planning Scheme Ordinance by a maximum of 2.95m (49%). The applicant has submitted a SEPP1 objection to this standard prepared by Mr N Ingham, consultant town planner.
21 The already approved height from natural ground level to the top of the lift overrun and the exhaust vent from the basement car park was 12.9m. Thus, the existing building already exceeds the 12m height development standard of Clause 28(4)(a) of the Gosford Planning Scheme Ordinance by 0.9m (7.5%). This overall building envelope height would not be increased by the proposal for the penthouse although the area in plan of non-compliance would be increased.
Notification
22 The application was notified to nearby owners and occupants between 2 March 2005 to 22 March 2005 and the council received no submissions from the public.
23 On 9 March 2005 the new development application was considered by Council's Environmental Heritage Committee, which stated:
The Committee were concerned about the amended height of the development and the visual impact on the heritage item and that there was no Heritage Impact Statement accompanying the amended plans.