10 The DCP contains the following relevant controls:
o Part 2.3: Desired future character of Woollahra Heritage Conservation Area is one that;
- maintains the residential character that has been predominant from the earliest phase of its development,
- maintains the character and significance of its identified precincts…
o Part 3.2.1: Conservation of significant items and group significant items;
o Objectives
01 To ensure those significant items, outbuildings and their curtilages and settings are retained.
02 To ensure that the distinctive shared characteristics of significant groups of buildings are retained and enhanced.
+ Controls
C4 Remnant elements of the settings of significant items, including but not limited to gardens, mature trees, archaeological deposits, original front fences, pathways, and contributory landscape elements are to be retained, whether or not they located on the same site as the item.
o Part 3.2.2: Original materials, finishes and colours.
o Part 3.2.3: Alterations and additions to significant items:
+ Objectives
01 To retain the original built form characteristics of significant items.
02 To ensure alterations or additions to a significant item are designed:
- to be consistent with the original architectural style, form, massing, details, materials and finishes of the item,
- not have an adverse impact on the curtilage and setting of the item.
03 To ensure that the various heights and setbacks of significant buildings within the streetscape are retained.
+ Controls.
C6 Excavation for basement levels will not be permitted below significant items or in the gardens unless the site slopes to the rear and a basement level can be achieved by excavating no deeper than 1.5 metres. The outer edge of excavation piling and all subsurface walls must not be less is than 1.5 metres from any boundary. No excavation is permitted where underpinning of significant fabric would be required.
o Part 3.2.4 Traditional building elements.
o Part 3.2.5 Significant landscape elements.
o Part 3.2.6 Original fences, gates and retaining walls.
+ Objectives
01 To retain and conserve original fences, gates and retaining walls to significant items.
02 To retain and conserve the original sandstone retaining walls that are characteristic of precincts within the HCA.
o Part 3.4.3 Building location and built form
+ Controls
C7 Where the existing ground level slopes and adjoining properties have basement levels, a basement level may be permitted in new development but must not be used as a garage at the street front.
C9 The outer edge of excavation, piling and all subsurface walls shall not be less than 1.5 metres from a front, side or rear boundary.
o Part 3.4.4 Building height, form, bulk, scale and character; The DCP provides a sliding scale for FSR, which results in an allowable FSR in the order of 0.95:1 for this dwelling house.
o Part 3.4.9 Parking and garages
+ Objectives
01 To ensure the residential buildings, rather than vehicle access and parking structures, remain the dominant elements in the streetscape.
02 To ensure that on-site vehicle parking is not provided at the expense soft landscaping and useable open space.
+ Controls
C1 The controls restrict on-site parking where:
- the parking of a vehicle may have a detrimental impact on the amenity of an adjoining property, the health or form of a significant tree, the character of a streetscape or laneway or the significance or architectural character of a building on the site or on an adjacent site
- extensive areas of excavation are required
- a driveway cannot comply with the maximum gradient of 20% with a Transitions at the top and bottom in accordance with AS 2890.1(1993)
C3 No additional vehicle crossovers will be permitted off street frontages
C4 No parking is permitted under the principal building form of a dwelling
C5 No garage is a to be introduced into original retaining walls built to the street alignment.
The Evidence.
11 In response to the issues, evidence was presented by :
o Mr R Staas, consulting heritage architect for the respondent,
o Mr D Lukas, councils senior assessment officer,
o Mr G Brooks, consulting heritage architect for the applicant, and
o Mr L Fletcher, consulting town planner for applicant.