Build It, Sell It, Do It Again: The South Australian Licensing Rule That Can Make a Landowner a Building Work Contractor

General information only for South Australian landowners, not legal, licensing, insurance or tax advice. Whether you need a building work contractor's licence is a question for Consumer and Business Services and your own solicitor; building indemnity insurance is a question for Consumer and Business Services and a licensed insurance broker, with the scheme rules published by the South Australian Government Financing Authority; what you must disclose to a buyer belongs to your conveyancer; and whether repeated building and selling makes you an enterprise for tax purposes belongs to your accountant. These rules change, so confirm the current position with the relevant authority before relying on it.

The plan is so common in Adelaide it barely feels like a plan. You own a decent block in Findon, Klemzig, Plympton or Glenelg North. There is room for two. You build two, keep one, sell the other, and the sale pays down what the build cost. Then, if it works, you do it again on the next block. Nobody involved thinks of this as going into the building industry. It is a family making better use of land it already owns.

South Australian law can see it differently, and the question commonly surfaces at the point of sale or letting rather than at the start. The Building Work Contractors Act 1995 (SA) does not only regulate people who build for other people. It also reaches people who perform building work with a view to selling or letting what they have improved, and it carries an evidentiary presumption that can treat repetition as carrying on business as a building work contractor — unlicensed — unless the contrary is proved.

Cyberate PM is engaged by the owner, is not paid on the transaction, and is not paid by a developer or a lender. Our role here is deliberately limited: we do not act as the builder or building work contractor, enter into the construction contract, carry out construction work or assume statutory supervision responsibilities. Because the Building Work Contractors Act 1995 may treat causing, organising or arranging building work as part of performing that work, whether any particular project management service involves a regulated activity must be assessed by CBS and the owner's solicitor by reference to the actual scope of engagement. We coordinate the licensed builder and the solicitor, and sequence a project so this question is asked at the beginning instead of discovered at the end. We coordinate; we do not give the advice.

The licence attaches to what you are doing, not what you call yourself

Most owners assume the dividing line is employment: a builder builds for other people and gets paid to do it, and an owner working on their own land is on the other side of the line. In South Australia that is only half right. The Act's concept of a building work contractor covers a person who carries on the business of performing building work for others, and it also covers a person who carries on that business with a view to the sale or letting of land or buildings improved by the work.

The second limb is the one owners have never heard of. It does not ask who employed you. It asks what the building work was for. Work on your own land, with your own money, on your own title, can still fall inside the definition if the point of the work was to produce something to sell.

We have made a related point in writing about the difference between a property project manager and a builder: in South Australia it is the regulated activity, not the label on the invoice, that decides who may do what. Here is the practical consequence for a landowner. The regulated activity can be your activity, and the regulated party can be you.

The presumption: repetition is what changes your status

What matters for the build-two-and-sell-one owner is not only a definition but a presumption. Broadly, and as general information rather than a reading of the section, the Act contains an evidentiary provision under which, in proceedings for an offence, a person who repeatedly sells or lets buildings that were built or improved by building work that person performed, within a period fixed by the Act, may be taken to have been carrying on business as a building work contractor unless the contrary is proved. How many buildings and how long the period runs are both set by the Act, and both are for Consumer and Business Services and your solicitor to confirm against the current text.

Three features of that shape how it operates.

It is a presumption, not a prohibition. Nothing in it says you cannot build and sell. It goes to where the starting position sits: on the description above, rather than a regulator having to establish from scratch that you were in business, the pattern itself can put you in the position of showing otherwise.

Letting sits alongside selling in the wording, not only selling. An owner who builds two, sells neither and rents both is not, on that reading, automatically outside the mechanism, though owners planning to hold and lease often assume this is purely a sales question. Whether it works that way on a particular set of facts is for CBS and your solicitor.

And it is framed around buildings sold or let across a window, not around projects. An owner who does a careful one-into-two, sells a dwelling, waits, then does another block sees a single sale per project and thinks of them as unrelated. The provision looks at buildings sold or let within the period, which is a different way of counting from the do-it-again plan.

This article deliberately does not restate how many buildings engage the provision, how long the period runs, the insurance threshold or any penalty. Those figures sit in the Act and the regulations, and the insurance settings were changed recently. A figure that is wrong, or that was right last year, is worse than none. Confirm the current numbers, and how any of this bears on your own facts, with Consumer and Business Services and your solicitor.

Why nobody raises it at the DA stage

The reason this arises late is structural: it surfaces at the far end of the project. A development approval is a planning and building decision — whether what you propose suits the site and complies with the Building Rules, not whether the person who eventually sells the finished product should hold a commercial licence. An owner can move through concept design, lodgement, consent, land division and construction without a single form asking what the second dwelling is for.

The question arrives later, and through other people: when the disclosure obligations that may attach to you as vendor have to be met — the scope of those obligations is a matter for your conveyancer, and while your solicitor or conveyancer prepares the document, the position being disclosed is yours — and the insurance position for the works has to be stated; when a buyer's conveyancer reads that and asks who built it; when a buyer's lender or inspector looks at the approval record and finds no insurance certificate against work that appears to have needed one; and when you do it a second time and someone puts the projects side by side.

By then the design is built and the money is spent. That is the case for asking in the first month rather than the last. The same logic governs everything else on a small dual occupancy in Adelaide, where the constraints that decide the shape of a project are all better found before design money goes out.

Building indemnity insurance, and why eligibility is the question to ask early

The presumption matters because being treated as a building work contractor is not only a paperwork question. It brings an insurance obligation with it. Building indemnity insurance is the South Australian consumer protection that responds where a builder dies, disappears or becomes insolvent and cannot complete or rectify domestic building work. Published guidance on the scheme describes it as required for domestic building work above a threshold set by the regulations where development approval is required, as needing to be in place before work starts, with the certificate going to the building owner and to the relevant authority for the approval. The scheme rules are published by SAFA, and the requirements that apply to a particular contract are for CBS and a licensed insurance broker to confirm. The cover stands behind the risk we have written about in the context of build-cost escalation and builder insolvency.

The question worth asking early is one of eligibility rather than price. The South Australian Government's published building indemnity insurance guidance describes the cover as something taken out by a person who holds a building work contractor's licence, and states that owner builders cannot take it out. Whether that is still the current position, and how it applies to a particular project, is a question to put to CBS and a licensed insurance broker rather than to settle from an article. If the owner was in fact carrying on business as a building work contractor when the work was undertaken, the issue may not simply be that an ordinary owner builder was ineligible to obtain BII. The question may instead be whether the owner should have obtained the appropriate building work contractor's licence before construction commenced and then arranged the required BII or sought an exemption from CBS. Whether anything can be remedied after the event, and to what extent, is a matter for CBS and the owner's solicitor.

That gap is what the buyer's side tends to look at. Whether the consumer protection regime stands behind a recently completed dwelling is the kind of thing a buyer's conveyancer examines, and what the answer means for that buyer — for the transaction, and for how the buyer's own lender approaches it — is a matter for the buyer's conveyancer and the buyer's own advisers rather than something an article can predict. Statutory warranties on domestic building work are understood to be capable of running to later owners, which is another reason the builder's identity stays live at resale; your conveyancer is the right person to confirm what that means for a particular sale.

Note the corollary. Where an owner builder engages licensed trades under contracts above the threshold, the insurance obligation for that contracted work is generally understood to sit with the contractor — confirm that against the published scheme rules with a licensed broker for each contract, because it is dealt with contract by contract rather than project-wide. Being an owner builder does not, on that understanding, remove insurance from the project; it changes where it sits relative to the parts performed by the owner.

What changes when a licensed builder holds the contract

Engaging a licensed builder under a head building contract is one of the structures owners use on a project like this, and it is worth describing plainly because it is the structure most owners have in mind when they ask the question. Where a licensed building work contractor holds the head building contract, performs the work and carries the required insurance, that building work and the associated insurance obligation are generally the contractor's rather than the owner's, and the owner is contracting as a client rather than as the person performing the regulated work. Which structure suits a given project is determined by the owner's own solicitor, working from current CBS guidance, and not by an article; once that is settled, our part is coordinating the implementation. Whether it also settles the owner's own position under the Act's second limb is a separate question for CBS and a solicitor: how a project is contracted is a fact that bears on the answer, not the answer itself.

It is not a magic formula, and arrangements in which an owner is nominated as owner builder on paper while a builder in substance runs the job are treated as a separate problem in their own right — the South Australian Government's building indemnity insurance guidance tells owners who are asked to sign one to go to CBS. But it is why the order of operations matters. Where a project's purpose includes selling a dwelling, who holds the head building contract is one of the facts CBS and a solicitor will look at, and that is a question to settle with your solicitor before anyone breaks ground rather than after. It is a sequencing problem, and sequencing is the part we can help with.

It also reframes the economics. Owner building is usually argued as saving the builder's margin. Set against that sits the supervision you now perform yourself, the risk you carry, the difference in the consumer protection position a buyer would be in — which is a matter for that buyer's own conveyancer and advisers — and the possibility that repetition changes your status. The comparison belongs inside a properly built feasibility rather than in a mental note about a margin.

Recent changes worth confirming before you rely on older commentary

The settings in this area were amended recently. Published industry commentary on the Statutes Amendment (Building and Construction Industry Review—Penalties) Act 2025, including the Housing Industry Association's newsroom, describes that Act as amending the Building Work Contractors Act 1995, adding offences relating to unlicensed work and revising penalties. The relevant amendments made by the Statutes Amendment (Building and Construction Industry Review—Penalties) Act 2025 commenced on 15 January 2026. They increased penalties for unlicensed and other unlawful conduct and introduced or strengthened provisions concerning unlicensed contracting, the use of licence numbers and false representations about licensing status. Because enforcement guidance and related administrative requirements may continue to change, the current position should still be confirmed with CBS and the owner's solicitor before action is taken. The amendments followed a broader review of consumer protection in the sector, and the building indemnity insurance settings were also changed late in 2025. No penalty figures appear here. The practical point is simply that older commentary — including advice an owner may have been given on a previous project — may no longer describe the current position, so it is worth confirming with CBS and your solicitor rather than assuming.

Raise the parallel question with your accountant at the same time: repetition is also what your accountant will look at when they work out the tax character of a build-and-sell plan, as set out in tax when subdividing and selling land in SA. Licensing and tax are separate tests with separate decision-makers, but the same behaviour triggers both.

How Cyberate PM handles this on your project

The limits are worth stating plainly. We do not act as the builder or building work contractor, enter into the construction contract, carry out construction work or assume statutory supervision responsibilities. Whether any part of our project management and coordination role constitutes a regulated activity must be determined by CBS and the owner's solicitor by reference to the actual services and contractual arrangements. We do not advise you on whether you need a licence and we form no view on your licensing status — that belongs to CBS and your solicitor. We do not arrange or interpret building indemnity insurance; that is a question for CBS and a licensed insurance broker, with the scheme rules published by SAFA. We do not prepare your sale disclosure and we do not advise on tax.

What we do is coordinate and sequence: get the question asked in the first month, before design and construction money is committed; coordinate the engagement of a licensed builder under a contract aligned with the answer your solicitor gives; and keep the project record in order — approvals, contracts, certificates, insurance documentation — so there is a complete file behind the eventual sale disclosure. Where an owner tells us the real plan is to do this repeatedly, we put that on the table early, because it is the fact most likely to change the answer.

Frequently asked questions

Do I need a builder's licence to build two houses and sell one in South Australia? That turns on facts an article cannot assess, so ask Consumer and Business Services and your own solicitor before you start. As general information, the Building Work Contractors Act 1995 reaches building work performed with a view to sale or letting, not only work performed for others, and in proceedings for an offence under the Act it carries a presumption capable of treating someone who repeatedly sells or lets buildings they built or improved, within a period fixed by the Act, as having carried on business as a building work contractor unless the contrary is proved. The specifics — including how many buildings and how long the period runs — are for CBS and your solicitor to confirm against the current text.

Can I be an owner builder and then sell the house? Owner building and selling are not incompatible, but the combination is where the obligations concentrate. Published SA Government guidance indicates that an owner builder cannot take out building indemnity insurance for their own work, the insurance position has to be dealt with on sale, and repetition is what can engage the presumption. Confirm the current insurance position with CBS and a licensed broker, and get the disclosure requirements from your conveyancer, before committing to a plan that ends in a sale.

If I use a licensed builder, is the problem solved? It changes the picture: where a licensed contractor holds the head contract, performs the work and carries the required insurance, that building work and the associated insurance obligation are generally the contractor's. Whether it also settles your own position is a question for CBS and a solicitor — how a project is contracted is a fact that bears on the answer, not the answer itself. It is not a blanket answer, and it does not cure an arrangement where an owner is named as owner builder on paper while a builder in substance runs the job. Have your solicitor look at the contracting structure rather than the label.

When does anyone actually check? Rarely at the development application, which is about planning and building compliance rather than commercial licensing. It tends to surface at the selling end: in the disclosure you may owe a buyer as vendor and your conveyancer prepares, in what a buyer's conveyancer or lender asks about who built the dwelling and what insurance was in place, and when a second project makes the pattern visible.

Does Cyberate PM tell me whether I need a licence? No. We are not a licensing authority, a law firm or an insurer. We raise the question at the start of a project rather than the end, coordinate the licensed builder and solicitor who own the answer, and make sure the plan you actually have — including the plan to do it again — is on the table when those advisers are asked.

If you are weighing a build-two-and-sell-one project on an Adelaide block and want the licensing, insurance and contracting questions settled before design money goes out, we can help you sequence it and coordinate the people who own each answer. Book a free consult.