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In Australia the person who takes on a whole renovation is usually called a builder, and on larger jobs a building contractor or project manager. The job is the same whichever word appears on your quote: one party holds the contract, engages the carpenter, plumber, electrician and tiler, orders materials, books the certifier's or surveyor's inspections and hands the finished rooms back to you. On anything larger than a single trade's work, that coordination is most of what you are paying for.
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Who is allowed to hold that contract is decided state by state rather than nationally. Building Commission NSW, the Queensland Building and Construction Commission, Victoria's building regulator, Building and Energy in Western Australia and Consumer and Business Services in South Australia each licence or register builders, and each sets a value above which the work must be carried out under a licence and under a written contract in the form the state prescribes. Specialist work such as plumbing, drainage, gasfitting and electrical work needs a licence no matter what it costs.
Above the same sort of threshold the states also require residential builders' insurance, known as home warranty, domestic building insurance or home indemnity insurance depending where you live. Checking the licence on the state register and confirming the insurance certificate exists before any deposit changes hands takes a few minutes online, and it is the single most useful thing a homeowner can do.
Builders, trade contractors and owner-builders: who can legally hold your contract
There is no single national builder's licence. Each state and territory runs its own scheme, with its own classes, its own value thresholds and its own public register, so a contractor licensed in one state is not automatically entitled to contract in the next one. Ask which licence class the contractor holds, then look the number up yourself on that state's register rather than relying on a number printed on a quote or a website.
- New South Wales: residential building work above a set value must be done under a contractor licence, and Building Commission NSW warns that a licence in an individual's name does not entitle that person's company or partnership to make the contract.
- Queensland: the QBCC licenses building work above a value threshold, and some work always needs a licence whatever it costs, including plumbing and drainage, gasfitting, chemical termite management, fire protection and building design.
- Victoria: builders must be registered with the state building regulator for work above a set value, and for work needing a building permit regardless of value, though single-trade work such as plastering, tiling or painting is treated differently.
- Western Australia: Building and Energy requires most home building work above a set value to be carried out by a registered building contractor, and building permits come from the local government.
- South Australia: a building work contractor's licence from Consumer and Business Services is needed to carry out building work, including arranging for other licence holders to do it.
- Electricians are licensed separately by the state energy safety regulator, and unlicensed electrical work is illegal everywhere in Australia.
- An owner-builder permit is a different thing entirely: it lets you supervise your own project, and it moves a licensed builder's responsibilities onto you.
Development approval, complying development and choosing your own certifier
Planning approval and building approval are separate questions, and the answer depends on your state and your council. In New South Wales there are three pathways. Minor work that meets every standard in the Codes SEPP can be exempt development and needs no consent. Straightforward work that meets the standards can go through complying development, a combined planning and construction approval that a council or a registered certifier can issue, and which the Department of Planning describes as a fast-track assessment taking around twenty days against roughly seventy for a typical development application. Anything that misses those standards needs a development application to the council, followed by a construction certificate before work starts.
Other states run their own systems, and a building permit is usually required for structural work: in Western Australia, for example, Building and Energy tells owners to obtain a building permit from the local government before construction begins. Wherever you are, you appoint the certifier or surveyor, not the builder. NSW makes the point bluntly on its approvals page: it is illegal for a builder to influence your choice of certifier, and the principal certifier has to notify the council before work begins.
How an Australian renovation runs, from licence check to final inspection
Describing the job well is what gets you comparable quotes. On LokalMatch you set out the renovation once, including the rooms, the scope, your postcode and roughly when you want to start, and builders working in that area contact you directly. The pros pay for the requests they receive, which is how the service is funded. LokalMatch does not carry out the work, does not set or quote prices, and does not vet, rank or recommend anyone, so verifying the licence, sighting the insurance certificate and calling past clients remain yours to do.
- Confirm the contractor's licence or registration on the state register, in the exact name that will appear on the contract.
- Settle the scope and the drawings before signing, so that every quote covers the same work.
- Get the written contract required for the value of the work, in the form your state prescribes, and read the checklist or consumer guide the state requires the builder to give you.
- Have the residential builders' insurance certificate in your hand before paying a deposit, where the work is above the threshold for cover.
- Obtain the planning and building approvals, and appoint your own principal certifier or building surveyor.
- Pay the deposit and progress payments strictly as the contract and the state's caps allow, and only for work that has actually been completed.
- Keep the certificates as they arrive: electrical safety, gasfitting compliance, plumbing compliance, termite management and the final occupancy or completion paperwork.
Residential builders' insurance, statutory warranties and the Australian Consumer Law
Residential builders' insurance is not the builder's public liability cover and it is not a product warranty. It is a state scheme that pays the homeowner when a builder cannot put things right because of death, disappearance, insolvency or the loss of a licence. Queensland's Home Warranty Scheme, taken out by the contractor before insurable work starts and running for six years and six months, is one example; New South Wales, Victoria and Western Australia run comparable schemes under different names. In New South Wales, where the work needs that cover, it is illegal for the contractor to ask for any payment at all, including the deposit, until the cover is in place and the certificate has been given to you.
Separately, statutory warranties are implied into the contract by law and cannot be written out of it. New South Wales applies six years for major defects and two years for other defects, regardless of what the contract says. The Australian Consumer Law then sits over the top of everything: services must be provided with due care and skill, be fit for the purpose you made known and be delivered in a reasonable time, and the ACCC states plainly that businesses cannot take those rights away. Consumer guarantees are enforced by the ACCC together with the state and territory fair trading offices.
Victoria also runs a free conciliation service for domestic building disputes between owners and builders. It is worth knowing about before a dispute starts, because an eligible Victorian dispute has to go through that service first, and VCAT will not accept an application without the resulting certificate.
Where renovations go wrong: money paid ahead, unlicensed work, asbestos and termites
- Deposits above the legal cap: several states legislate a maximum deposit, and the cap varies by state and by the value of the contract, so check your state's figure rather than accepting whatever is asked.
- Paying ahead of the schedule: the QBCC and Consumer Affairs Victoria both warn that paying early or paying for work not yet complete can reduce what the home warranty or domestic building insurance will cover.
- Unlicensed contracting: work done outside a licence can put the statutory insurance out of reach, which is the protection you would need most if the builder walks away.
- Asbestos: SafeWork NSW warns that homes built before the late 1980s may contain asbestos in flooring, kitchens, bathrooms, roofs, ceilings and walls, and the national agency estimates asbestos is present in one in three Australian homes.
- Termite management: the NCC requires a termite management system for buildings with susceptible elements in at-risk areas, and a durability notice recording the system, its installation date and the recommended inspection frequency must be fixed somewhere prominent such as the meter box.
- Verbal variations: changes agreed on site and never written down are the most common source of argument about the final account.
Engaging a licensed builder compared with taking out an owner-builder permit
An owner-builder permit lets you supervise and coordinate work on your own home instead of engaging a licensed builder to do it. In New South Wales a permit is needed for owner-builder work above a set value on a dwelling that requires development consent or is complying development, larger projects require approved education, a white card is required, and only one permit may be granted in a five-year period. Queensland has its own owner-builder permit and a limited exemption for low-value work on your own property.
The trade-off is responsibility. NSW states it directly: an owner-builder is just as responsible for the building work as a fully licensed builder would be, which covers safety, building standards and compliance. You do not take out residential builders' insurance for work you do yourself, but any trade business you engage above the insurance threshold must have that cover and must give you the certificate before starting work or taking any payment. Selling within the statutory period also carries disclosure obligations, so read your state's rules before deciding.
When a project needs a builder rather than a list of individual trades
- The work touches structure: removing or altering a wall, opening up a ceiling, underpinning or changing a roof line.
- More than two or three trades have to be sequenced, and one waiting on another would stall the job.
- The project needs development consent, a complying development certificate or a building permit, and someone has to carry that through inspections.
- The value is above your state's threshold for a licensed contractor and a prescribed written contract.
- The house predates the late 1980s and asbestos may be disturbed, so the removal has to be planned before demolition starts.
- You want a single party responsible for defects afterwards, rather than several trades pointing at each other.
Builders: frequently asked questions
How do I check that a builder is licensed?
Use the register run by the state where the work will happen: NSW, Queensland, Victoria, Western Australia and South Australia each publish one. Search the exact legal name that will sign the contract, since a licence held by an individual does not cover that person's company or partnership, and confirm the licence class actually covers the work you want done.
Can a builder ask for a deposit before showing me an insurance certificate?
Where the work requires residential builders' insurance, no. New South Wales makes it illegal for the contractor to demand or receive any payment, deposit included, before the cover is taken out and the certificate is given to you, and Victoria has created offences for demanding money under a major domestic building contract without the required insurance. Treat a request for money before the certificate as a reason to stop.
How much deposit can a builder legally ask for?
That is capped by legislation in several states, and the cap differs between states and between contract sizes, with limited exceptions where a large share of the work is customised and made off site. Look up the maximum that applies to your state and your contract value, and remember the QBCC's advice never to pay more than the legal maximum and never to pay in advance of the payment schedule.
Do I need council approval, or can my renovation be complying development?
In New South Wales it depends on whether the proposal meets every standard in the State Environmental Planning Policy for exempt and complying development. If it does, a council or a registered certifier can issue a complying development certificate, which combines planning and construction approval and is assessed far faster than a development application. If it does not, a development application to the council is the pathway. Other states use their own approval and building permit systems.
What can I do if the finished work is defective?
Start with the builder in writing, relying on the statutory warranties implied into your contract and on the consumer guarantees in the Australian Consumer Law, which cannot be contracted out of. If that fails, your state building regulator or fair trading office handles building complaints, and Victoria requires eligible domestic building disputes to go through its free conciliation service before VCAT will accept them.
Does a written contract have to be in a particular form?
Above the state threshold, yes. New South Wales prescribes different contracts for smaller and larger jobs, with required content such as the licence number, the work description, the price, a progress payment schedule and a cooling-off notice, plus a checklist the homeowner completes before signing. Victoria, Western Australia and South Australia each require a written contract above their own thresholds, with prescribed notices attached.
Sources
- NSW Government: Step by step guide to choosing the right tradesperson or builder
- NSW Government: Contracts for residential building work
- NSW Government: Approvals needed for your building project
- NSW Planning: Complying development
- NSW Government: When an owner-builder permit is needed
- QBCC: When you need a licence
- QBCC: Deposits and progress payments
- QBCC: What is home warranty insurance
- Consumer Affairs Victoria: About builders, tradespeople and other building practitioners
- Building and Energy WA: Building or renovating your home
- SA.GOV.AU: Building work contractor's licence
- ACCC: Consumer rights and guarantees
- SafeWork NSW: Asbestos
- NCC 2022 Housing Provisions Part 3.4: Termite risk management
Written by the LokalMatch editorial team. Last reviewed 14 September 2026. How we write and check our guides
What general contractors can help with
Common jobs homeowners hire general contractors for:
- Home RenovationsRenovate a room, a floor or the whole house.
- Whole Home RenovationsRedo the whole house at once, from layout to finishes.
- Home ExtensionsAdd space with a new room, a second storey or an extension.
- Basement RenovationsUpdate, finish or convert a basement into living space.
- Basement FinishingTurn an unfinished basement into finished living space.
- Bathroom RenovationsUpdate or fully redo a bathroom, ensuite or powder room.
- Kitchen RenovationsUpdate or fully redo a kitchen: layout, cabinets, counters and more.
- Apartment RenovationsRenovate an apartment or rental unit.
- Garage ConversionsConvert a garage into a room, office or living space.
- Attic ConversionsTurn an attic into a bedroom, office or storage space.
- SunroomsBuild or enclose a sunroom, solarium or three-season room.
- Porch ConstructionBuild, rebuild or repair a front or back porch.
- Structural RenovationsRemove or move walls, add beams and change a home's structure.
- Accessibility RenovationsMake a home easier to get around for people with limited mobility.
- Aging-in-Place RenovationsAdapt a home so you can stay in it safely as you get older.
- Fire & Water Damage RenovationsRebuild and refinish after a fire, flood or water leak.
- Commercial-to-Residential ConversionsConvert a commercial space into a home or residential units.
- Project ManagementCoordinate trades, schedules and budgets for a renovation.
- Construction ManagementOversee a build or major renovation on the owner's behalf.
- Home Elevators & LiftsInstall residential elevators and platform lifts.
- Accessibility EquipmentInstall stair lifts, ramps, grab bars and mobility aids.
- Custom MetalworkCustom railings, gates, stairs and other metal pieces.
- WeldingOn-site and shop welding repairs and fabrication.
- Garage BuildersBuild detached and attached garages.
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What affects the cost of renovation
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 project
- Structural changes, such as moving or removing walls
- Plumbing, electrical and HVAC work involved
- Finishes and materials chosen
- Design, drawings and permits
- Condition of the existing house once it's opened up
- Access to the site and the timeline
How to compare general contractors before you hire
- Look for a contractor who has finished projects similar in size and type to yours, and ask to see them.
- Get a written contract with the scope, the payment schedule, the timeline and how changes will be priced.
- Ask who will manage the job day to day and how often you'll get updates.
- Check that they carry liability insurance and workers' compensation coverage, and that their trades are licensed where required.
- Compare quotes on the same scope, and ask what each one leaves out.
- For structural changes, make sure an engineer or designer is involved where needed.
Questions to ask general contractors before you hire
- Who will pull the permits, and who will be there for inspections?
- Which parts of the job will you do yourselves, and which will go to subcontractors?
- How do you handle change orders and unexpected problems once walls are open?
- What is the payment schedule, and what is each payment tied to?
- Can you show me proof of liability insurance and workers' compensation coverage?
- What warranty do you offer on your workmanship, and is it in writing?
- Can I speak with a few of your recent clients?
Renovation permits and local rules
Some renovation 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.
Permits and licensingGuides about renovation
- ✦
Home Renovations guide
A home renovation is work on a house you already own: reworking rooms, replacing what has worn out, opening up a plan that no longer suits the household. Australian housing stock makes that a very wide category.
Read guide - ✦
Whole Home Renovations guide
A whole-home renovation takes the entire house at once: every room stripped back, the plan redrawn, the services renewed and the finishes replaced, often with part of the building demolished and rebuilt.
Read guide - ✦
Home Extensions guide
An addition adds floor area to an existing house: a room or two off the back, a new wing, a second storey over part or all of the footprint, or habitable space built in underneath a raised timber-floored home.
Read guide
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