Sans Souci 2219 · Bayside Council
House Demolition in Sans Souci: Done Right Before You Rebuild
Knocking it down is a day's work. Getting there takes planning.
On the Sans Souci peninsula, between the Georges River and Botany Bay, a demolition touches more than the house. Neighbours sit close, the ground can hold acid sulfate soils, and older homes carry asbestos. We run demolition as the first stage of a rebuild, not a separate job someone else leaves half-finished.
Short answer
What's involved in house demolition in Sans Souci?
Approval comes first, usually inside the DA or CDC for the new home. Then utility disconnections, an asbestos survey and licensed removal, dilapidation records of the neighbouring houses, and acid sulfate soil checks near the water. The knockdown itself takes days. Bayside assesses a house DA in about 11 to 15 weeks, and a mid-spec rebuild costs $2,310 to $2,780 per m².
Written and reviewed by Oliver Alameri
Licensed builder, NSW Contractor Licence 487805C · Founder, Buildana
Fact-checked
Before the excavator turns up
Demolition needs approval, the same as building. It can ride along with your new-home DA at Bayside Council, or go through the state's demolition code with a certifier if the site qualifies. Either way, the rebuild approval and the demolition approval should line up so there's no gap where you own an empty block and nothing's happening.
Then the services. Power is disconnected through Ausgrid, water and sewer are capped through Sydney Water, and gas is sealed off at the meter. Each has its own lead time. Booking them late is the most common reason a demolition date slips.
Asbestos comes before any of the heavy work. Houses here from the 1930s to the 70s very often have it in eaves, wet areas, old fibro additions or vinyl floors. A licensed removalist takes it out and a clearance certificate is issued before the machines move in.
- Demolition approval, aligned with the rebuild approval
- Ausgrid, Sydney Water and gas disconnections booked early
- Asbestos survey, licensed removal and clearance certificate
- Dilapidation reports on neighbouring homes
- Site fencing, signage and a traffic plan for trucks
A demolition that's rushed at the start costs weeks at the end.
Protecting the neighbours, and yourself
Many Sans Souci homes sit on 500 to 900 square metre blocks, but side setbacks can still be tight. Vibration from demolition and later from excavation can crack an old neighbour's plaster or tiles.
So before we start, a building consultant photographs and documents the condition of the neighbouring houses. That dilapidation report protects everyone. If a neighbour claims damage, there's a dated record of what was already there.
We also keep dust down with water. Street swept. Trucks kept out of school pick-up where we can. On a quiet peninsula street, being a good neighbour for a few weeks matters more than people think, and it makes the next eleven months of building a lot easier.
Plan the demolition and the rebuild together
Send me your Sans Souci address. I'll check the approval pathway, soil mapping and likely asbestos, and give you a timeline and price that covers demolition through to handover.
0476 300 300What's under the slab in Sans Souci
Much of Bayside is mapped for acid sulfate soils, and the peninsula is no exception. These soils are harmless while they stay wet and undisturbed. Dig into them and expose them to air, and they can release acid into groundwater and attack concrete and steel.
Council's map puts land into classes, and the class decides how deep you can excavate before a management plan is required. For a new slab that's usually manageable. For a basement or pool it needs more work, sometimes with dewatering.
The ground is a mix of sandy soils and shale, with softer ground near the foreshore. A geotech report after demolition confirms what the new footings sit on.
Then the part you've been waiting for
Once the site is clear, the rebuild starts. Homes near the water need corrosion-resistant choices: stainless or hot-dip galvanised fixings, suitable roofing and window finishes, and a little more care with anything metal outside.
On the peninsula, a mid-spec new home costs roughly $2,310 to $2,780 per square metre (Rawlinsons for Sydney, with a 1.05 Bayside loading). Demolition, asbestos and any acid sulfate management sit as separate lines, priced once we've inspected the site.
Council approval? Bayside usually needs 11 to 15 weeks for a house. Drawn to the code instead, it can go through a certifier faster.
Demolition checklist for a Sans Souci home
Get these sorted and the demolition becomes a short, uneventful stage.
- 01
Approval pathway for demolition and rebuild, lined up together
- 02
Asbestos survey before any quote is finalised
- 03
Utility disconnections requested well ahead of the demolition date
- 04
Dilapidation reports on both neighbours and any shared fences
- 05
Acid sulfate soil class for the lot, from council's mapping
- 06
Where you'll live from demolition to handover
Sans Souci demolition questions
Do I need approval to demolish a house in Sans Souci?
Yes. It can be bundled into your new-home DA with Bayside Council, or signed off by a certifier under the demolition code where the site fits. Either way it's timed to match the rebuild approval.
How long does house demolition take?
The physical demolition usually takes days, not weeks. The preparation, including disconnections, asbestos removal and approvals, is what takes time, so we start it early.
What are acid sulfate soils?
Soils that are harmless when wet and undisturbed but can release acid when dug up and exposed to air. Much of Bayside is mapped for them. Council's map shows the class for your lot and when a management plan is needed.
Do you only do the demolition, or the whole build?
We manage demolition as the first stage of a knockdown rebuild. That way approvals, timing and site handover all fit together with the new home.
Sources and references
Costs are from the Rawlinsons handbook with the local cost index applied; rules and timeframes are checked against the sources below.
- Bayside Council
- Rawlinsons Australian Construction Handbook, Rawlhouse Publishing
- Environmental Planning and Assessment Act 1979 (NSW)
- State Environmental Planning Policy (Exempt and Complying Development Codes) 2008
- Asbestos, SafeWork NSW
- Plumbing, building and developing, Sydney Water
- Building or renovating a home, NSW Government
Clear the block properly. Build the right house on it.
One plan, one contract, from demolition to handover. Let's start with your Sans Souci site.