Background
Refine Living Pty Ltd appealed Northern Beaches Council’s refusal of its application to demolish an existing house at 10 Beverley Place, Curl Curl, subdivide the land into two lots, and build a dwelling with a pool on one lot and a dual occupancy with pools and strata subdivision on the other. The sloping site required excavation of about 2,375.5 cubic metres, to a maximum depth of 5.2 metres.
After Refine Living amended its proposal to address traffic and geotechnical concerns, the Council maintained two objections: that excavation was excessive because of construction impacts on neighbours, particularly truck movements on the narrow street, and that it produced unacceptable building bulk. The proposal otherwise complied with the applicable minimum lot-size and height standards, and geotechnical evidence supported the safety of the earthworks.
The Court’s Holding
Commissioner Washington upheld the appeal and granted development consent subject to amended conditions. The Court held that construction disruption was inevitable but acceptable: traffic experts agreed on a construction traffic management plan, including up to five truck movements per day, two traffic controllers, and a shorter anticipated excavation period of about four months.
The Court also rejected the building-bulk objection. Although it accepted that excavation for rear bedrooms was unnecessary and had not been minimised in a literal sense, the additional excavation was generally not visible and enabled the buildings to step down the slope. No issue had been raised about the above-ground form, setbacks, footprint, or environmental impacts. The Court modified disputed conditions, including deleting an unnecessary private-access requirement and a vehicle-turntable condition, while retaining measures to keep the right of carriageway clear and manage disruptions.
Key Takeaways
- Excavation on a steep residential site may be acceptable where it supports a stepped design and its construction impacts are managed by enforceable conditions.
- Building bulk under the applicable control was assessed principally by the development’s perceptible, above-ground visual effect.
- Conditions of consent must be tied to the development and evidence; the Court removed conditions it found excessive or unnecessary.
Why It Matters
The decision shows that substantial excavation is not automatically fatal to a residential proposal on sloping land. The practical effects on neighbours, the visibility of the resulting built form, expert evidence, and carefully framed construction conditions are central to the merits assessment.