House Demolition in Mandurah — Knockdown Done Properly

What a full house demolition covers

The house, the slab or stumps under it, the footings, and the waste — gone. A complete job takes the structure down, breaks out the concrete, sorts the material into what can be recycled and what goes to landfill, and leaves the block level and clean. Septic tanks, old wells and buried rubbish get dealt with when they turn up, which on older Mandurah blocks is more often than you'd think.

What it should never be is vague. Before any machine starts, the scope needs to say exactly what's coming down, what's staying — boundary fences, established trees, a shed you want kept — and what state the ground is left in.

The job runs in a fixed order

Demolition day is the short part. The sequence before it is where the job is won or lost.

1. Walk-through and fixed quote. The contractor looks at the structure, access, services and anything suspect, and prices the whole job — demolition, tip fees, clearing — in one written number.
2. Permit and paperwork. A demolition permit (BA5) is lodged under the Building Act 2011 (WA) with the City of Mandurah or Shire of Murray. Permits are generally valid for 2 years, so there's no panic once it's granted.
3. Disconnections. Power, water, gas, sewer and NBN are formally disconnected and capped. This is the step that most often sets the timeline — book it early.
4. Asbestos comes out first. If sampling confirms asbestos, a licensed removalist strips it as a separate stage before general demolition. In WA that's law, not preference — see our asbestos removal page.
5. Knockdown. The excavator works through the structure in a controlled order, damping down dust as it goes. A typical single-storey house is down in a matter of days.
6. Break out, sort, cart. Slab and footings out, steel separated for recycling, clean concrete and brick off to crushing where possible, the rest to landfill.
7. Level and hand over. The block is graded level and left clean for the builder or the sale board.

WorkSafe WA licenses demolition work in two classes under the Work Health and Safety (General) Regulations 2022 — Class 1 for the bigger, more complex structures, Class 2 for the kind of houses that fill Mandurah's suburbs — and the regulator must be notified at least 5 working days before licensed demolition work begins. We ask the contractors we work with to hold the relevant WorkSafe WA licences and public liability cover — ask to see them before work starts.

Mandurah's older stock changes the quote

Around Halls Head, Silver Sands and Coodanup, plenty of houses date from the 1960s and 70s — beach shacks and fibro cottages built when asbestos cement sheeting was the standard wall and eave material. Any pre-1990 house here should be treated as suspect until it's sampled. That's not a scare line; it's the single biggest variable in a Mandurah demolition price, because licensed removal is a separate, regulated stage.

Brick-and-tile from the 1980s onward is heavier but simpler: more tonnes to cart, fewer surprises. And on the canal developments, the demolition itself is routine — it's the access that gets planned carefully, with machines and trucks working tight lots where the neighbour's wall is a couple of metres away.

Knockdown-rebuild is why most people call

The pattern across the established parts of Mandurah is familiar: a solid but tired house on a good block — often walking distance to the estuary or the beach — where the land is worth more than the building. Knocking down and rebuilding keeps the location and replaces everything else.

For a knockdown-rebuild, the demolition scope should be written around your builder's site-start requirements: block level, slab and footings fully removed, services capped at the boundary where the builder wants them. Get those requirements in writing from the builder first, then hand them to the demolition contractor. If the block is also carrying sheds, an old pool or heavy vegetation, site clearing and pool removal get priced into the same job — one machine mobilisation instead of three.

What it costs, honestly

House demolition in Mandurah is priced per job, not per square metre off a chart — asbestos content, structure type, access and tip distances move the number more than floor area does. Typical ranges by structure type are on the costs page. Get every quote fixed and in writing, and make sure tip fees are inside the number, not under it.

Call (08) 9516 2266 and describe the house — we'll connect you with contractors who'll walk the block and quote it properly.