Demolition
Demolition near you
Demolition of a house is a sequence, not an event. The machine that knocks the structure down arrives near the end, and most of the cost, the time and the risk sits in what happens before it: identifying what is in the building, taking the dangerous material out, disconnecting the services, and notifying the people who need to be notified.
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Asbestos governs the order of operations. SafeWork NSW's demolition guidance says to check the asbestos register before beginning demolition, and that if a register is not available you must have a competent person inspect the structure for asbestos, and then remove all asbestos before beginning demolition work. It also states that an unrestricted demolition licence is required to demolish, or partially demolish, any building, structure, major plant or installation that contains or may contain a hazardous chemical, and that a restricted licence holder can apply for a chemical installation condition to be added to their licence to do that type of work.
The threshold that decides who may touch the asbestos is a specific one. Under the Work Health and Safety Regulation 2017 in New South Wales, removal of non-friable asbestos-containing material without a licence is permitted only if the area to be removed does not exceed ten square metres in total. Above that, or for any friable asbestos at all, a licensed removalist is required. In a pre-1990 Australian house, ten square metres is not very much wall sheeting.
Full, partial, strip-out and deconstruction
- Full demolition removes the entire structure and usually the slab and footings, leaving a site ready for new construction.
- Partial demolition removes part of a building while the rest remains standing, which is structurally the most demanding version because what stays has to be supported.
- Strip-out or soft demolition removes linings, fixtures and services back to the frame, and is what precedes most major renovations.
- Deconstruction dismantles a building to recover materials, takes far longer, and can make sense for a house with salvageable hardwood, bricks or joinery.
- Outbuilding and structure removal covers sheds, garages, pools and retaining walls, and each has its own approval and disposal questions.
- Emergency demolition after fire, storm or structural failure runs to a different sequence again, driven by what is unsafe to leave standing.
Asbestos comes out before the machine arrives
SafeWork NSW's instruction for demolition work is a three-step sequence: check the asbestos register before beginning demolition; if no register is available, have a competent person inspect the structure for asbestos; and remove all asbestos before beginning demolition work. That order exists because once a building containing asbestos has been knocked down, the material is broken, mixed through the rubble and no longer separable, which converts a manageable removal job into a contaminated site.
Australian houses built before 1990 are the ones to assume contain it until an inspection says otherwise, and it is rarely in one place. Eaves, wall sheeting in wet areas, backing to vinyl flooring, fencing, roof sheeting, flues and electrical backing boards are all common locations, and a competent person's inspection is what turns assumption into a register.
Where a building contains or may contain a hazardous chemical, SafeWork NSW says an unrestricted demolition licence is required to demolish or partially demolish it, and that a restricted licence holder may apply for a chemical installation condition to be added to their licence to undertake that work. Ask which licence the contractor holds and whether it carries that condition.
The ten square metre line, and who may cross it
In New South Wales, the Work Health and Safety Regulation 2017 permits removal without a licence of non-friable asbestos-containing material only where the area to be removed does not exceed ten square metres in total. SafeWork NSW sets out what that permission comes with: you must read and follow the Code of Practice on how to safely remove asbestos, be aware of and advise any workers of the health risks of exposure, undertake and provide asbestos awareness training, and provide health monitoring to workers where ongoing asbestos work is anticipated. SafeWork NSW recommends hiring a licensed professional regardless of the exemption.
Everything else requires a licence: more than ten square metres of non-friable material, and any quantity of friable asbestos at all. The work health and safety regulators are state and territory bodies, so confirm the position with your own regulator, but the ten square metre non-friable threshold comes from the model regulations and is broadly consistent across the country.
For a demolition, the exemption is practically irrelevant. A house full of asbestos sheeting is far past ten square metres, and the removal should be done under licence with notification, by the people who do it every day.
The order a demolition actually runs in
- Approvals: a demolition approval from your council or certifier, which in most states is a separate application from any approval for what you build next.
- A hazardous materials survey by a competent person, producing a register that identifies asbestos and anything else requiring specialist handling.
- Service disconnections: electricity, gas, water, sewer and telecommunications, each arranged with its own authority and each with its own lead time.
- Notification to the regulator and to neighbours, with the notice periods your state requires before licensed asbestos removal and before notifiable demolition work.
- Licensed asbestos removal, air monitoring where required, and a clearance before anything else happens.
- Site protection: hoarding, dust and noise control, tree protection, and protection of any adjoining structure that is staying.
- Mechanical demolition, sorting and removal of waste, and then site clean and a level, drained lot.
Approvals, notifications and the neighbours
Demolition needs its own approval in every Australian state, and it is a separate matter from approval for what replaces the building. Which body issues it — council, a private certifier or a registered building surveyor — depends on the jurisdiction, and heritage listing, a conservation area or a tree on the site can each convert a routine application into a much slower one.
Notification obligations run in parallel and come from work health and safety law rather than planning law. Licensed asbestos removal and certain categories of demolition work have to be notified to the regulator in advance, with notice periods set by each state. Owners and occupiers of the premises, neighbouring properties and others who could be affected are also expected to be informed before asbestos removal or demolition begins.
Tell the neighbours yourself and early, regardless of what the rules require. A demolition affects the street for weeks, and a neighbour who was told is a very different proposition from one who woke up to an excavator.
Where demolition projects come unstuck
- A quote taken without a hazardous materials survey, which becomes a variation the moment asbestos is found.
- Services not disconnected in time, which stops the job dead because no contractor will demolish around a live connection.
- A shared or boundary wall discovered to be shared only when it is half down.
- Underground surprises: an old fuel tank, a filled-in pool, a septic system, or a slab under the slab.
- Tree protection ignored, which can attract a penalty larger than the demolition contract on a protected tree.
- Waste sorting left to the end, which costs more because mixed waste attracts a higher disposal charge than separated streams.
- No clearance documentation for the asbestos removal, which is the paperwork a certifier and a future buyer will both ask for.
Demolition: frequently asked questions
Does asbestos have to be removed before a house is demolished?
Yes. SafeWork NSW's demolition guidance says to check the asbestos register before beginning demolition, to have a competent person inspect the structure if no register is available, and to remove all asbestos before beginning demolition work. The reason is practical as well as legal: once a building containing asbestos has been knocked down, the material is broken up and mixed through the rubble, and what would have been a controlled removal becomes a contaminated site with a far larger disposal problem.
Can I remove asbestos from my own house before demolition?
Only within a narrow limit, and it is not a limit that helps with a demolition. In New South Wales the Work Health and Safety Regulation 2017 permits unlicensed removal of non-friable asbestos-containing material only where the area does not exceed ten square metres in total, and SafeWork NSW attaches conditions to that: read and follow the Code of Practice on how to safely remove asbestos, be aware of and advise workers of the health risks, provide asbestos awareness training, and provide health monitoring where ongoing asbestos work is anticipated. SafeWork NSW recommends using a licensed professional regardless. Any friable asbestos, in any quantity, requires a licence.
What licence does a demolition contractor need?
It depends on the building. SafeWork NSW states that an unrestricted demolition licence is required to demolish, or partially demolish, any building, structure, major plant or installation that contains or may contain a hazardous chemical, and that a restricted demolition licence holder can apply for a chemical installation condition to be added to their licence to undertake that work. Licensing is administered by each state and territory regulator, so ask to see the licence, check it covers the work you are asking for, and confirm it is current.
Do I need approval to demolish a house?
Yes, in every Australian state, and it is a separate approval from any approval for what you build afterwards. Who issues it varies: council in some jurisdictions, a private certifier or registered building surveyor in others. Heritage listing, a conservation area, or a protected tree on the site can each turn a routine demolition application into a long one, so find out what applies to your title early rather than after you have signed a contract with a demolition date in it.
How long before demolition do the services need to be disconnected?
Longer than most people allow for, and each utility has its own process. Electricity, gas, water, sewer and telecommunications are disconnected by different authorities with different lead times, and a contractor will not demolish around a live service. This is the single most common cause of a demolition date slipping. Start the disconnection applications as soon as the demolition approval is lodged rather than waiting for it to be granted.
Sources
Written by the LokalMatch editorial team. Last reviewed 22 September 2026. How we write and check our guides
What demolition contractors can help with
Common jobs homeowners hire demolition contractors for:
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What affects the cost of demolition
Prices depend on the details of your project. We only publish price ranges when they’re backed by real LokalMatch quote data or reliable sources. Until then, here’s what usually changes the price:
- Size and scope of the job
- Materials and finishes chosen
- Condition of what's there now
- Access to the work area
- Urgency and scheduling
- Permits, where required
How to compare demolition contractors before you hire
- Describe the job clearly, with photos if you can, so pros can give you a realistic quote.
- Get more than one written quote and compare them on the same scope of work.
- Check that the pro carries liability insurance and, where required, is licensed for this work in your area.
- Look at recent reviews and photos of similar jobs.
- Get the price, the timeline and the payment terms in writing before work starts.
Questions to ask demolition contractors before you hire
- Have you done jobs like this before, and can I see examples?
- What is included in your price, and what isn't?
- Does this work need a permit from my municipality, and who will get it?
- Can you show me proof of liability insurance?
- When can you start, and how long will the job take?
- What warranty or guarantee do you offer on your work?
Demolition permits and local rules
Some demolition work needs a permit or has to meet local bylaws. Rules vary by municipality, so ask your pro whether a permit is needed and who will apply for it — and check with your city or town if you’re unsure.
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