Every year, thousands of Australian homes are demolished to make way for new builds, subdivisions, or major renovations. What catches most homeowners off guard is not the demolition itself but the preparation required before a single wall comes down. If your home was built before 2003, it almost certainly contains asbestos. Under Australian law, you cannot begin demolition until a qualified assessor has inspected the property and any asbestos has been safely removed. When you hire a licensed demolition contractor, they will manage this process and ensure every permit, safety plan, and utility disconnection is handled before the excavator rolls in.
Why You Should Only Hire a Licensed Demolition Contractor
Demolition is classified as high risk construction work under the Work Health and Safety (WHS) Regulations in every Australian state and territory. It involves structural collapse, heavy machinery, hazardous materials, and falling debris. An unlicensed operator who cuts corners on any of these fronts puts your family, your neighbours, and the demolition crew at serious risk.
Legal requirement. In every state, demolition work involving load-bearing structures, pre-stressed or post-tensioned elements, or work above a certain height requires the contractor to hold a demolition licence issued by the relevant WHS regulator. This is separate from a building licence and carries its own qualification, insurance, and safety management requirements.
Asbestos liability. If asbestos is disturbed during demolition without a proper survey and licensed removal, you as the property owner can face fines of up to $50,000 for individuals and $250,000 for corporations under WHS legislation. A licensed demolition contractor will not start work without an asbestos inspection report.
Insurance protection. Licensed demolition contractors carry public liability insurance and workers compensation. If an unlicensed operator causes damage to a neighbouring property or injures a worker on your site, you may be held personally liable.
Accountability. Licensed contractors are registered with a state regulator. If something goes wrong, you have a formal complaints pathway. With an unlicensed operator, your only option is civil court.
You can verify a demolition contractor’s credentials on TradieVerify’s search page.
1. Check Their Demolition Licence and Qualifications
Before you sign anything, verify that your demolition contractor holds the correct licences for the scope of your project. Demolition licensing in Australia is managed by state and territory WHS regulators, not building authorities.
Two types of demolition licence exist nationally:
- Unrestricted demolition licence. Allows the holder to demolish any structure of any height, including those with pre-stressed or post-tensioned elements, chemical or explosive demolition, and work involving cranes.
- Restricted demolition licence. Limits the holder to structures where the highest point being demolished is no more than 15 metres above the adjacent ground level, and the work does not involve pre-stressed elements, explosives, or cranes.
For a standard residential house demolition (single or double storey), a restricted licence is usually sufficient. For multi-storey or structurally complex projects, you need a contractor with an unrestricted licence.
What to check:
- Licence status. Is it current? Demolition licences are typically valid for two to three years depending on the state.
- Licence class. Restricted or unrestricted? Match it to your project scope.
- SWMS capability. Can they provide a site-specific Safe Work Method Statement? This is a legal requirement.
- Asbestos removal licence. If your home contains asbestos, does the contractor hold a Class A or Class B asbestos removal licence, or will they subcontract this to a licensed removalist?
- Insurance. Ask for a copy of their public liability and workers compensation certificates. Check the expiry dates.
Or search across states on TradieVerify. A legitimate demolition contractor will hand over their licence number without hesitation.
2. Arrange an Asbestos Inspection Before Any Demolition
This is the single most important step. Under WHS Regulation 425, any building constructed before 31 December 2003 must be inspected for asbestos-containing materials (ACMs) before demolition or renovation work begins. No exceptions.
Why 2003? Australia banned the importation, manufacture, and use of all asbestos products on 31 December 2003. Any building constructed before that date may contain ACMs in roofing, wall cladding, eaves, floor tiles, pipe insulation, electrical backing boards, and even textured coatings.
What the inspection involves:
- A qualified asbestos assessor (holding a competency in identification and assessment) inspects the property.
- Samples of suspected materials are collected and sent to a NATA-accredited laboratory for analysis.
- The assessor produces an asbestos register and report identifying all confirmed and presumed ACMs, their location, type (friable or non-friable), and condition.
What happens next? If asbestos is found, it must be removed by a licensed asbestos removalist before demolition begins. More than 10 square metres of non-friable asbestos requires a Class B licence. Any amount of friable asbestos requires a Class A licence. For a detailed breakdown of removal costs and what to expect, see our asbestos removal cost guide.
Cost of an asbestos inspection: $300 to $800 for a standard residential property, depending on size and number of samples.
3. Understand Class A vs Class B Asbestos Removal Licences
If your pre-demolition asbestos inspection finds ACMs, you need to know which type of removal licence is required. Getting this wrong can result in prosecution.
Class B asbestos removal licence:
- Covers removal of non-friable (bonded) asbestos only. This includes fibro cement sheeting, vinyl floor tiles, and asbestos cement pipes.
- Required when removing more than 10 square metres of non-friable ACM.
- Supervisors must hold CPCCDE3014 (Remove non-friable asbestos) and CPCCDE4008 (Supervise asbestos removal) with at least 12 months of experience.
- Homeowners can remove up to 10 square metres of non-friable asbestos themselves in some states (QLD, SA, WA), but this is not recommended before a full demolition.
Class A asbestos removal licence:
- Covers removal of any type of asbestos, including friable (loose, powdery) materials such as sprayed insulation, pipe lagging, and deteriorated fibro.
- The holder must have a Certified Safety Management System compliant with AS/NZS ISO 45001:2018.
- Supervisors must have at least three years of experience and hold CPCCDE3015 (Remove friable asbestos) plus CPCCDE4008.
- Class A licence holders can also perform Class B work.
For homeowners: You do not need to memorise these details. When you hire a licensed demolition contractor, ask them whether a Class A or Class B removalist is needed based on the asbestos report, and verify the removalist’s licence on your state regulator’s website.
4. Obtain Demolition Permits and Council Approvals
Demolition is not just a WHS matter. You also need planning and building approvals from your local council or a private certifier.
Types of approval:
- Complying Development Certificate (CDC). In NSW and some other states, straightforward residential demolitions that meet set criteria can be approved by a private certifier without a full DA. This is the fastest pathway and typically takes one to two weeks.
- Development Application (DA). Required in most states for demolitions involving heritage-listed buildings, properties in conservation zones, or structures where the demolition is part of a larger development. DA processing can take six to twelve weeks.
- Building permit / demolition permit. In Victoria, council report and consent is required if the demolition removes more than half the building volume or any part of a street-facing facade. Other states have similar thresholds.
Documentation typically required:
- Site plan and demolition methodology
- Asbestos inspection report and clearance certificate
- Structural engineer’s report (for partial demolitions)
- Utility disconnection confirmations
- Neighbour notification certificates
Your demolition contractor or a private certifier can manage the application. For a full overview of the approval process, see our building permits and approvals guide.
5. Disconnect All Utilities Before Work Begins
Every utility service to the property must be disconnected and made safe before demolition starts. This is a legal requirement and a critical safety issue.
Electricity. Must be permanently disconnected (abolished) at the street connection point by your electricity network provider. This is not the same as simply switching off the power at the meter box. Allow 10 to 20 business days for processing.
Gas. Must be capped and disconnected at the mains by your gas network provider. Active gas lines during demolition create explosion risk.
Water. Must be disconnected or capped at the mains. In Sydney, coordinate with Sydney Water. In Melbourne, contact your local water authority. Allow 5 to 10 business days.
Sewer. Sewer connections must be sealed to prevent contamination. Your water authority will advise on requirements.
Telecommunications. Contact your provider to disconnect phone, internet, and any cable services. NBN connections require separate disconnection through NBN Co.
Timing matters. Start utility disconnection requests at least four weeks before your planned demolition date. Your demolition contractor cannot legally commence work until all services are confirmed as disconnected.
6. Know the Difference Between Partial and Full Demolition
Not every project requires a complete knockdown. Understanding the distinction helps you hire a licensed demolition contractor with the right experience and ensures the correct permits are obtained.
Full demolition removes the entire structure down to the slab or below ground level. The site is cleared, levelled, and prepared for new construction. Full demolition of a standard residential home takes two to five days once work begins.
Partial demolition removes specific sections of a structure while retaining others. Common examples include removing a rear extension, taking out internal walls, or stripping a building back to the structural frame for renovation. Partial demolition is often more complex than full demolition because the remaining structure must be protected, propped, and structurally assessed.
Key differences for homeowners:
- Partial demolition usually requires a structural engineer’s report confirming the retained structure will remain safe and compliant.
- Partial demolition may be classified as renovation or alteration work rather than demolition for permit purposes, which can simplify the approval pathway.
- Full demolition typically costs less per square metre than partial demolition because the contractor can use heavy machinery without worrying about protecting adjacent structures.
7. Review the Safe Work Method Statement (SWMS)
A Safe Work Method Statement is a legal requirement for all high risk construction work in Australia, and demolition is explicitly listed as high risk under the WHS Regulations.
What is a SWMS? It is a written document that identifies the high risk construction work activities, the hazards associated with those activities, and the control measures that will be used to manage the risks. Your demolition contractor must prepare a site-specific SWMS before any work begins.
What should be in a demolition SWMS:
- Description of the demolition method (mechanical, manual, or combination)
- Sequence of demolition (which elements come down in which order)
- Identification of hazards: asbestos, dust, noise, falling objects, structural collapse, underground services, neighbouring structures
- Risk control measures for each hazard
- Emergency procedures
- PPE requirements for all workers on site
- Details of any High Risk Work Licences held by workers (for crane operation, rigging, scaffolding, or working at heights)
What to do as a homeowner: Ask your contractor for a copy of the SWMS before work starts. You do not need to be a safety expert to read it. Look for your site address, the specific demolition method, and confirmation that asbestos has been addressed. If the SWMS is generic or does not mention your property, ask for a site-specific version.
8. Get Three Written Quotes and Compare Properly
Get at least three written quotes before committing to a demolition contractor.
What a proper demolition quote should include:
- Asbestos inspection and removal (or confirmation it has been completed)
- Demolition method and equipment to be used
- Site preparation, including hoarding and tree protection
- Utility disconnection coordination
- Waste removal, transport, and disposal (including tip fees)
- Council permit application (if the contractor is managing this)
- Timeline from start to site clearance
- Site levelling and compaction after demolition
- Whether salvageable materials will be recycled or returned to you
- GST inclusion and payment terms
Compare like for like. One quote may include asbestos removal while another assumes you will arrange it separately. One may include council permit fees while another lists them as an extra. Make sure every quote covers the same scope so you are comparing actual costs.
Salvage and recycling. A good demolition contractor will separate recyclable materials (timber, steel, concrete, bricks) from general waste. Recycling reduces tip fees and some contractors pass those savings on to you. Salvageable items like hardwood beams, doors, and period fittings can be sold or reused. Ask each contractor about their recycling rate and whether they offer any credit for salvaged materials.
9. How Much Does House Demolition Cost in Australia?
Demolition costs depend on the property size, building materials, presence of asbestos, access, and your location. Here are indicative costs as of 2025-2026:
| Service | Cost Range (AUD) |
|---|---|
| Full house demolition (standard 3-bed) | $15,000 - $45,000 |
| Demolition per square metre | $40 - $100 |
| Asbestos inspection | $300 - $800 |
| Asbestos removal (non-friable, Class B) | $1,500 - $5,000 |
| Asbestos removal (friable, Class A) | $5,000 - $20,000+ |
| Partial demolition (internal walls, extensions) | $3,000 - $15,000 |
| Utility disconnections (all services) | $1,500 - $4,000 |
| Council/DA permits | $200 - $2,000 |
| Site levelling and compaction | $1,000 - $3,000 |
| Skip bin / waste disposal (full house) | $3,000 - $8,000 |
Factors that increase cost: asbestos presence (can add $2,500 to $20,000+), double-storey or brick construction, restricted site access, inner-city locations, heritage overlay requirements, contaminated soil, and pools or retaining walls that need separate removal.
Location matters. Demolition in Sydney typically costs 20-30% more than Brisbane, Adelaide, or Perth due to higher labour rates, stricter council requirements, and more expensive waste disposal.
10. State-by-State Demolition Licensing Guide
Demolition licensing is administered by WHS regulators, not building authorities. Every state and territory requires a demolition licence for structural demolition work, though the specific classes and thresholds differ.
| State | WHS Regulator | Licence Classes | Notify Before Work | Verify Licences |
|---|---|---|---|---|
| QLD | Workplace Health and Safety QLD | Demolition work licence (2-year validity) | 5 days | Browse QLD trades |
| NSW | SafeWork NSW | Restricted / Unrestricted | 5 days (structures 6m+) | Browse NSW trades |
| VIC | WorkSafe Victoria | Demolisher (low-rise / medium-rise / unlimited) | 5 days | Browse VIC trades |
| SA | SafeWork SA | Contractor’s licence + SafeWork notification | 5 days (structures 6m+) | Browse SA trades |
| WA | WorkSafe WA (DEMIRS) | Class 1 / Class 2 / Class 3 (3-year validity) | 5 working days | Browse WA trades |
| TAS | WorkSafe Tasmania | Code of Practice (no specific licence) | Notification required | Browse TAS trades |
| ACT | WorkSafe ACT | WHS licence required | Notification required | Browse ACT trades |
| NT | NT WorkSafe | No specific licence (notice of intent required) | Notification required | Browse NT trades |
Key differences between states:
- Queensland requires a demolition work licence from Workplace Health and Safety Queensland for any demolition involving load-bearing elements, pre-stressed components, or load-shifting equipment. This is separate from any QBCC builder licence.
- New South Wales issues restricted and unrestricted demolition licences through SafeWork NSW. From 2025, all workers on licensed demolition sites must complete CPCCDE3016 hazard identification training (superseded by CPCCDE3030 from February 2026).
- Victoria registers demolishers through WorkSafe Victoria in three tiers: low-rise (up to 2 storeys), medium-rise (up to 5 storeys), and unlimited. A building permit for demolition also requires VBA report and consent if removing more than half the building volume.
- Western Australia issues Class 1, Class 2, and Class 3 demolition licences through WorkSafe WA, each with different scope limitations. Licences are valid for three years.
- Tasmania and the Northern Territory do not issue specific demolition licences but require compliance with their respective Codes of Practice and advance notification to the regulator.
Neighbour notification. In addition to regulator notification, most states require you to notify adjoining property owners in writing before demolition begins. In NSW, this is at least seven days’ written notice in metropolitan areas (two days in regional areas). Your demolition contractor should handle this as part of their service.
Frequently Asked Questions
How do I hire a licensed demolition contractor in Australia?
Start by verifying their demolition licence on TradieVerify or the relevant state WHS regulator (SafeWork NSW, WorkSafe Victoria, WorkSafe QLD). Confirm they hold a restricted or unrestricted demolition licence appropriate for your project. Ask for their asbestos removal licence or the details of their asbestos subcontractor. Get three written quotes covering the full scope including asbestos inspection, permits, utility disconnection, and waste disposal.
How much does it cost to demolish a house in Australia?
A full residential demolition typically costs $15,000 to $45,000 for a standard three-bedroom house. Costs range from $40 to $100 per square metre depending on materials, location, and site access. Asbestos removal adds $1,500 to $20,000+ depending on the type and quantity. Inner-city locations cost 20-30% more than suburban or regional areas.
Do I need an asbestos inspection before demolition?
Yes. Under WHS regulations, any building constructed before 31 December 2003 must have an asbestos inspection before demolition or renovation work begins. This applies in every Australian state and territory. The inspection must be done by a competent assessor who will produce an asbestos register identifying all asbestos-containing materials and their condition.
What permits do I need to demolish a house?
You typically need a demolition permit or development approval from your local council, a Complying Development Certificate (CDC) from a private certifier in some states, and your demolition contractor must notify the relevant WHS regulator (usually five days before work begins). Heritage-listed properties require additional planning approval. See our building permits guide for full details.
What is a SWMS and why does my demolition contractor need one?
A Safe Work Method Statement is a legally required safety planning document for high risk construction work, including demolition. It identifies specific hazards on your site, describes the demolition method and sequence, and sets out control measures to manage risks. Your contractor must prepare a SWMS before any demolition work begins. You can ask for a copy to review.
Can I partially demolish my home instead of a full knockdown?
Yes. Partial demolition removes specific sections (rear extensions, internal walls, upper floors) while retaining the rest of the structure. It is common for renovation projects. Partial demolition often requires a structural engineer’s report to confirm the remaining structure is safe. It can be more complex and more expensive per square metre than full demolition due to the need to protect and prop the retained sections.
Summary
Hiring a licensed demolition contractor in Australia comes down to these key steps:
- Verify their demolition licence on TradieVerify or the state WHS regulator before signing anything
- Get an asbestos inspection for any building constructed before 2003, and ensure removal is done by a Class A or Class B licensed removalist
- Obtain the correct permits from council or a private certifier, and ensure the contractor notifies the WHS regulator
- Disconnect all utilities at least four weeks before the planned demolition date
- Review the SWMS to confirm the contractor has a site-specific safety plan for your property
- Get three written quotes covering the full scope from asbestos to site clearance
Demolition is one of the highest-risk trades in the construction industry. When you hire a licensed demolition contractor, you get a professional who holds the correct WHS licence, carries proper insurance, understands asbestos obligations, and has the equipment and experience to bring your structure down safely. Search for a licensed demolition contractor in your area on TradieVerify and make sure the job is done right from day one.
Related Guides
- How to Hire a Licensed Builder in Australia
- Building Permits and Approvals: An Australian Homeowner’s Guide
- How Much Does Asbestos Removal Cost in Australia?
Sources
- Safe Work Australia: Demolition Safety Topic, https://www.safeworkaustralia.gov.au/safety-topic/hazards/demolition
- SafeWork NSW: Demolition Licensing and Requirements, https://www.safework.nsw.gov.au/your-industry/construction/demolition
- WorkSafe Queensland: Demolition Work Licence, https://www.worksafe.qld.gov.au/licensing-and-registrations/work-health-and-safety-licences/what-licence-do-i-need/demolition
- WorkSafe Queensland: Asbestos and Demolition, https://www.worksafe.qld.gov.au/licensing-and-registrations/asbestos-removal-and-licensing/asbestos-and-demolition
- Victorian Building Authority: Demolition of Buildings Report and Consent, https://www.vba.vic.gov.au
- SafeWork NSW: Class A and Class B Asbestos Removal Licences, https://www.safework.nsw.gov.au/licences-and-registrations/licences/class-a-asbestos-removal-licence
- Safe Work Australia: High Risk Construction Work Requiring a SWMS, https://www.safeworkaustralia.gov.au/duties-tool/construction/hazards-information/high-risk-construction-work-requiring-swms
- NSW Planning Portal: Complying Development Demolition, https://www.planningportal.nsw.gov.au/development-and-assessment/planning-approval-pathways/complying-development/demolition