If you’ve started looking into a home renovation or extension in Brisbane, you’ve probably come across the term ‘owner builder’ at some point. It sounds appealing: more control, potential savings, your name on the permit. But it’s worth understanding what you’re actually signing up for before going down that path.
Here’s an honest look at both options, including where owner building makes sense and where a licensed builder is the best answer.
What is an owner builder?
In Queensland, an owner builder is someone who takes out a building permit to manage the construction of their own home rather than engaging a licensed builder to do it for them. You’re essentially taking on the role of the principal contractor: organising trades, managing the timeline, and being legally responsible for the build.
To do this in Queensland, you need to apply for an owner builder permit through the QBCC (Queensland Building and Construction Commission). There are a few conditions: the property needs to be your primary residence, and you can only take out one owner builder permit every six years.
You don’t need to physically build the work yourself. Most owner builders hire licensed tradespeople for each part of the job, they’re just managing the process rather than having a builder coordinate it all.
Where owner building can work
For smaller, well-defined projects, owner building can be a reasonable option for the right person. If you’re handy, have experience managing contractors, and have the time to actually run a project, you can save on the builder’s margin.
People who tend to do well with it usually have a background in construction or project management, or are doing something relatively simple – a small extension, a shed, a garage. They know how to read plans, they understand what questions to ask a certifier, and they’re not doing it for the first time on a complex renovation.
The potential saving is real, but it’s not guaranteed. Builder margins exist partly because coordinating a renovation or home extension is genuinely difficult work. When things go wrong, a licensed builder has the experience and relationships to sort it out quickly. As an owner builder, that falls on you.
Where it gets complicated
The main place owner building tends to unravel is on larger or more complex projects: full home renovations, significant extensions, house raising, or anything involving structural work.
A few things to be aware of:
Insurance and liability
As an owner builder, you’re personally liable for defects during the build. If something goes wrong with a trade’s work, chasing it up is your problem. Licensed builders in Queensland are required to take out home warranty insurance for projects over $3,300. This protects the homeowner if the builder goes bust, dies, or disappears. Owner builder projects don’t get the same cover, which matters a lot when it comes time to sell.
Selling the property
In Queensland, if you sell a home within six years and six months of completing owner builder work, you’re required to take out owner builder warranty insurance, disclose the owner builder work to buyers, and provide a building inspection report. Some buyers are cautious about purchasing a property with owner builder history, and some lenders apply stricter conditions. It’s worth thinking about your plans for the property before committing.
Time
Managing a build while working full time is a significant commitment. Chasing trades, managing deliveries, dealing with inspections, and making decisions on the fly all take time. Delays in one trade can hold up others, and you’re the one making those calls.
Trade coordination
Licensed builders have ongoing relationships with trades they trust. As a first-time owner builder, you’re starting from scratch. This includes getting quotes, checking licences, and hoping the person who said they’d be on site Tuesday actually shows up.
What a licensed builder brings
When you engage a licensed builder for your home renovation or extension, you’re paying for more than just construction. You’re paying for someone who has done this many times, knows how to read a problem before it becomes expensive, and carries the legal and financial responsibility if something isn’t built correctly.
In Brisbane particularly, where older homes like Queenslanders and post-war houses have their own structural quirks, an experienced local builder is worth a lot. Things like subfloor conditions, site access issues, or existing council approvals on older properties can catch people off guard if they haven’t dealt with them before.
A licensed builder also handles your QBCC licence requirements, trades scheduling, and compliance sign-offs. For most homeowners doing a significant renovation, the coordination alone is worth the builder’s margin.
So which one is right for you?
Honestly, owner building suits a narrow group of people well: those with relevant experience, the time to manage it properly, a straightforward scope, and no plans to sell in the short term.
For most Brisbane homeowners doing a meaningful renovation or home extension, a licensed builder is the lower-risk option. The potential savings of owner building often get absorbed by delays, mistakes, or the hidden cost of your own time.
If you’re weighing it up, it’s worth getting a proper quote from a licensed builder first so you actually know what the margin is. Sometimes it’s less than people expect, and sometimes the certainty is worth more than the number.
We work with Brisbane homeowners on everything from kitchen and bathroom renovations through to full home extensions and custom builds. If you want to talk through what’s involved in your project, get in touch with the JM Homes team.
