Whether you are planning a renovation in Norwood, building a new home in Mount Barker, or adding a second storey in Glenelg, the builder you hire will shape the entire experience. Hiring a licensed builder in South Australia is the single best way to protect your money and your property. Consumer and Business Services (CBS) fielded thousands of enquiries and complaints about building work in recent years, and most of those headaches trace back to poor due diligence at the start. This guide walks you through everything you need to know to find a licensed builder in South Australia the right way. From CBS licence checks and building indemnity insurance to deposit limits, contract rules, and what to do when things go wrong, it is all covered here. Start by browsing licensed builders in TradieVerify’s builder directory.
Why You Need a Licensed Builder in South Australia
The Building Work Contractors Act 1995 governs building work in South Australia. If your project costs more than $20,000 (including GST), the person performing the work must hold a current building work contractor licence issued by Consumer and Business Services. This is a legal requirement, not a suggestion.
Legal protection. A licensed builder in SA has met qualification standards, holds public liability insurance, and operates under the oversight of CBS. Their work must comply with the National Construction Code and South Australian building regulations.
Building indemnity insurance. When you hire a licensed builder in South Australia for residential work over $20,000, they are required to provide building indemnity insurance before work starts. This protects you if the builder dies, disappears, or becomes insolvent before finishing the job or fixing defects.
Accountability. Licensed builders are registered with CBS. If a dispute arises, CBS can investigate, conduct conciliation, and refer matters to SACAT. With an unlicensed operator, you have almost no regulatory protection.
Penalties for unlicensed work. Individuals performing building work without a licence face fines of up to $50,000. If you knowingly engage an unlicensed building work contractor, you lose access to CBS complaint processes and building indemnity insurance protections.
You can check any SA builder’s licence status on TradieVerify’s search page in seconds.
How to Check a Builder’s Licence in South Australia
Before you hand over any money or sign a contract, verify the builder’s CBS building licence. This takes a few minutes and can save you thousands.
Step 1: Use TradieVerify search. Head to TradieVerify’s licence search and enter the builder’s name or licence number. TradieVerify cross-references CBS data so you can confirm their licence status, type, and conditions in one place. This is the fastest way to hire a licensed builder in South Australia with confidence.
Step 2: Verify on the CBS website. For a second check, visit the CBS “Find a Licence Holder” register at cbs.sa.gov.au. Search by name or licence number and confirm the details match what the builder provided.
What to check on the licence:
- Licence number — does it match the number on their quote, contract, and advertising?
- Work type scope — is the licence appropriate for your project? (See licence types below.)
- Expiry date — is the CBS building licence current, not expired or suspended?
- Conditions — are there any restrictions or limitations on the licence?
Building work supervisor. Every building project in SA must have a registered building work supervisor overseeing the work. Confirm that the builder has a registered supervisor assigned to your job.
Red flag: contract signer must match licence holder. The person who signs your building contract must be the actual licence holder, or an authorised representative of the licensed company. If someone else signs, your contract and insurance protections could be void.
You can also browse licensed builders in SA on TradieVerify to find verified builders in your area.
Understanding SA Building Licence Types
Not all builder licences cover the same work. Before you hire a builder in South Australia, make sure their licence type matches your project.
Licence Types
| Licence Type | What They Can Build |
|---|---|
| General Builder (Class 1 & 10) | Houses, townhouses, duplexes, garages, sheds, carports, swimming pools, retaining walls. Full scope of domestic building. |
| Restricted Builder | Specific categories only, such as carpentry, painting, tiling, paving, fencing, or other defined scopes. |
A general builder can take on an entire house build or major renovation. A restricted builder is limited to the specific trade categories listed on their licence.
Building work supervisor registration. This is a separate registration to the building work contractor licence. Every building project in SA must have a registered building work supervisor who is responsible for overseeing the work on site. The supervisor must be named on the building notification lodged with your council. If your builder cannot tell you who their registered supervisor is, that is a problem.
Learn more about builder licensing across Australia on the builder trade page.
South Australia Building Indemnity Insurance
Building indemnity insurance is one of the strongest protections available when you hire a licensed builder in South Australia for residential work. Understanding the thresholds and coverage will help you make informed decisions.
Threshold: Building indemnity insurance is required for all domestic building work valued at $20,000 or more (including GST). This threshold was updated in November 2025, up from the previous $12,000 limit.
Coverage limit: The maximum coverage is $250,000, increased from the previous $150,000 limit effective October 2025.
Claims period: You can make a building indemnity insurance claim for up to 5 years from the date of completion of the building work.
What is covered:
- Incomplete work if the builder dies, disappears, or becomes insolvent
- Defective work arising from faulty workmanship where the builder has died, disappeared, or become insolvent
- Work that does not meet the contracted specifications under those same circumstances
What is NOT covered:
- Work performed under an owner-builder permit
- Normal wear and tear
- Buildings over 3 storeys
- Damage caused by the homeowner
- Work below the $20,000 threshold
Who provides it? SAFA (South Australian Government Financing Authority) acts as the insurer of last resort for building indemnity insurance in SA. If commercial insurers will not cover a builder, SAFA steps in to ensure homeowners still have access to protection.
The builder must provide the building indemnity insurance certificate BEFORE work starts. Do not let anyone pick up a tool until you have this document. If a builder says the certificate will come later, treat that as a serious red flag.
SA Contract Requirements and Deposit Limits
South Australia has clear rules about building contracts and deposit limits. These protections exist because too many homeowners have been caught out by unfair terms. When you hire a licensed builder in Adelaide or anywhere else in SA, these rules apply.
Deposit Limits
| Contract Value | Maximum Deposit |
|---|---|
| Under $20,000 | Maximum $1,000 |
| $20,000 and above | Maximum 5% of the contract price |
Any builder who asks for more than these amounts is breaking the law. If someone requests 20% upfront, walk away and report them to CBS.
Cooling-Off Period
For domestic building contracts, you have a 5 clear business day cooling-off period from the date you sign. During this time, you can cancel the contract. The builder may only retain reasonable costs already incurred.
Progress Payments
Progress payments must be for work already performed. A builder cannot invoice you for a stage that has not been completed. You have the right to inspect work before paying each progress claim.
Mandatory Contract Inclusions
Under SA law, your written building contract must include:
- Builder’s licence number
- Full scope of work to be performed
- The contract price (or how it will be calculated)
- Start and completion dates
- The deposit amount
- A progress payment schedule
- Building indemnity insurance details
- Dispute resolution procedures
A written contract is mandatory for building work. Verbal agreements leave you exposed. For more advice on getting the best deal, read the complete guide to getting quotes from tradies.
How to Get and Compare Quotes in South Australia
Getting multiple quotes is standard practice. Aim for at least 3 written quotes before deciding who to hire as a builder in SA.
What a South Australia builder quote should include:
- Builder’s full name and CBS licence number
- ABN (Australian Business Number)
- Detailed scope of work
- Itemised pricing for each stage or component
- Prime cost items and provisional sums clearly listed
- Timeline with start and completion dates
- Inclusions and exclusions stated clearly
- Payment terms and schedule
Comparing quotes the right way: Compare like-for-like. One Adelaide builder may quote $320,000 while another quotes $270,000, but the cheaper quote might exclude site preparation, landscaping, and driveways. Always read the inclusions and exclusions before comparing the bottom line.
Ask each builder:
- What is your CBS licence number and type?
- Can you provide your building indemnity insurance certificate?
- Who is the registered building work supervisor for my project?
- Can I speak with two recent clients?
Watch out for provisional sums. These are estimates for items where the final cost is unknown. A builder who loads up on high provisional sums may be hiding the true South Australia builder cost. Get clarity on every line item.
For a deeper breakdown, check out the guide on how to read and compare trade quotes in Australia.
Red Flags When Hiring a South Australia Builder
CBS and SACAT deal with building complaints year after year. The warning signs are well documented. If you spot any of these when trying to find a licensed builder in South Australia, proceed with extreme caution or walk away.
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Asking for cash payments to avoid GST. This is tax fraud, and it means there will be no paper trail if something goes wrong. No receipt, no recourse.
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No licence number on advertising or quotes. Licensed builders should display their CBS building licence number on all marketing materials, quotes, and contracts. If it is missing, ask why.
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Unwilling to provide a building indemnity insurance certificate. If they dodge this request, they either do not have insurance or are not properly licensed. Do not proceed.
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Pressure to sign the contract quickly. You have a 5 business day cooling-off period for a reason. Any builder who pressures you to sign immediately and start work the next day is a red flag.
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Quote significantly below all other quotes. If one quote is 30-40% cheaper than the rest, the builder is either cutting corners, underquoting to win the job and then hitting you with variations, or not including everything.
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No fixed business address or ABN. A legitimate building work contractor has a registered business address and an active ABN you can verify on the ABR website.
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Cannot provide references from recent clients. Every established builder should be able to give you contact details for at least two recent clients. If they refuse, something is off.
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Wants to start work before the contract is signed. This removes your legal protections. No contract means a much harder path through CBS or SACAT if things go wrong.
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Different person signs the contract than the licence holder. The contract signer must be the CBS licence holder or an authorised representative. If someone else signs, your insurance may be void.
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History of CBS or SACAT actions. Check the CBS register for any enforcement actions. A single resolved complaint may not be concerning, but a pattern of disciplinary actions or licence suspensions is a dealbreaker.
Owner-Builder Permits in SA
If you are considering managing the build yourself rather than hiring a builder in SA, you will need an owner-builder permit for domestic building work valued at $5,000 or more.
How to apply: Owner-builder permits are issued by CBS. There is no formal owner-builder course required in South Australia, though you do need a White Card (general construction induction) if you will be present on the construction site.
Key things to know:
- Building work supervisor required. Even as an owner-builder, you must have a registered building work supervisor overseeing the work. This is a legal requirement.
- No building indemnity insurance. As an owner-builder, you cannot obtain building indemnity insurance. The person buying your property later has no insurance protection on the work you did.
- Disclosure requirement. If you sell the property within 7.5 years of completing owner-builder work, you must disclose this to the buyer in the contract of sale. Failure to disclose can result in legal action and financial liability.
- All subcontractors must still be licensed. Every trade you engage must hold a current licence for their work type. You cannot use unlicensed subbies just because you are an owner-builder.
- You are responsible for safety. As an owner-builder, you take on all workplace health and safety obligations on site.
Owner-building can save money, but the responsibilities are significant. For a full breakdown, read the owner-builder permits guide.
What to Do If Something Goes Wrong: CBS Complaints and SACAT
Even with thorough preparation, building projects can go wrong. South Australia has a structured dispute resolution process through Consumer and Business Services and the South Australian Civil and Administrative Tribunal. Knowing the steps helps you act quickly.
Step 1: Raise the issue directly with the builder in writing. Put your complaint in an email or letter. Describe the problem clearly, reference your contract, and give the builder 14 days to respond. Keep a copy of everything you send and receive.
Step 2: Contact CBS. If the builder does not respond or you cannot reach a resolution, contact Consumer and Business Services. CBS will review your complaint and may arrange conciliation between you and the builder.
Step 3: CBS compulsory conciliation conferences. CBS has the power to require both parties to attend a conciliation conference. This is not optional for the builder. Businesses that fail to attend a CBS compulsory conciliation conference can be fined up to $10,000. These conferences aim to reach an agreement without going to tribunal.
Step 4: SACAT for unresolved disputes. If conciliation does not resolve the issue, you can apply to the South Australian Civil and Administrative Tribunal (SACAT). SACAT can hear building disputes and has powers to order rectification, award compensation, and make binding decisions. SACAT handles claims involving defective work, incomplete work, and contract breaches.
Building indemnity insurance disputes. If your claim relates to building indemnity insurance, the dispute resolution process runs through SAFA. Contact SAFA directly to lodge a claim or dispute an insurance decision.
For detailed advice on handling disputes across all states, read the building disputes guide.
How Much Does a Builder Cost in South Australia?
Builder costs in South Australia vary depending on the project type, location, site conditions, and finish level. Here are typical ranges to help you budget before you hire a licensed builder in South Australia.
Common Project Costs in SA
| Project Type | Typical SA Price Range |
|---|---|
| New home build (standard) | $1,500 - $2,500 per sqm |
| New home build (premium) | $2,500 - $3,200+ per sqm |
| Full renovation | $1,000 - $3,000 per sqm |
| Kitchen renovation | $15,000 - $45,000 |
| Bathroom renovation | $10,000 - $30,000 |
| Granny flat | $80,000 - $160,000 |
| Deck or pergola | $8,000 - $25,000 |
| Home extension | $1,800 - $3,000 per sqm |
Hourly Rates
General builder hourly rates in South Australia typically sit between $50 and $85 per hour, though this varies by region and experience. Most builders prefer to quote on a fixed-price or cost-plus basis for larger projects rather than hourly.
Factors Affecting Price
- Location. Adelaide metro builders tend to charge more than regional SA builders due to higher overheads. Adelaide Hills and beachside suburbs like Glenelg can attract a premium.
- Site access and conditions. Sloping blocks, difficult access, reactive soils, or rock require extra work and cost more.
- Material choices. Timber framing is cheaper than steel. Standard fittings cost less than premium selections.
- Market conditions. Trade shortages and material supply issues affect pricing. Always get current quotes to understand the real South Australia builder cost for your project.
For more cost breakdowns, browse the full range of cost guides on TradieVerify.
Frequently Asked Questions
Do I need a licensed builder for all work in South Australia?
No. A building work contractor licence is required when the total cost of building work exceeds $20,000 including GST. Below that threshold, licensing is not mandatory for the contractor, though you may still choose to hire a licensed builder for quality and accountability. Some work, like structural alterations, should always be done by a licensed professional regardless of cost. Check the SA state page for more details.
How do I verify a CBS building licence is current?
The fastest way is to search on TradieVerify, which cross-references CBS data and shows licence status and type. You can also search directly on the CBS “Find a Licence Holder” register at cbs.sa.gov.au. Always run an SA builder licence check before signing a contract.
What is the maximum deposit a SA builder can charge?
For contracts under $20,000, the maximum deposit is $1,000. For contracts of $20,000 or more, the maximum deposit is 5% of the contract price. Any builder who asks for more is breaking the law. Report excessive deposit requests to CBS.
What does building indemnity insurance cover in SA?
Building indemnity insurance in SA covers you for up to 5 years from completion. It protects against incomplete and defective work if the builder dies, disappears, or becomes insolvent. The coverage limit is $250,000. It does not cover work done under an owner-builder permit, normal wear and tear, or buildings over 3 storeys.
How do I lodge a complaint about a SA builder?
Start by raising the issue with the builder in writing and allowing 14 days for a response. If that does not resolve it, contact Consumer and Business Services (CBS). CBS can arrange compulsory conciliation. If conciliation fails, apply to SACAT. For more steps, see the building disputes guide.
Can I be an owner-builder in South Australia?
Yes, but you need an owner-builder permit from CBS for domestic building work valued at $5,000 or more. No formal course is required, but you need a White Card if you will be on site. You must have a registered building work supervisor, and you must disclose the owner-builder work when selling within 7.5 years. Read the full owner-builder permits guide for details.
What is a building work supervisor?
A building work supervisor is a person registered with CBS who is responsible for overseeing building work on site. Every building project in South Australia must have a registered building work supervisor. They ensure the work meets building standards and code requirements. Your builder should be able to tell you who their registered supervisor is before work begins.
How long do I have to make a building indemnity insurance claim?
You have 5 years from the date of completion of the building work to make a building indemnity insurance claim in SA. The claim must relate to the builder’s death, disappearance, or insolvency. Contact SAFA to start the claims process.
Sources
- CBS — Find a Licence Holder: https://www.cbs.sa.gov.au/find-a-licence-holder
- SA.GOV.AU — Building Work Contractor’s Licence: https://www.sa.gov.au
- Building Work Contractors Act 1995 (SA)
- SAFA — Building Indemnity Insurance: https://safa.sa.gov.au/insurance/building-indemnity-insurance
- SACAT: https://www.sacat.sa.gov.au
- Master Builders SA: https://mbasa.com.au
- Housing Industry Association SA: https://hia.com.au