How to get an owner-builder loan
An owner-builder loan is a construction loan for someone who manages their own build under a state owner-builder permit instead of a licensed builder's fixed-price contract. Most banks decline them, and the lenders that accept them publish contribution requirements of 30% to 40% of the land and build cost, a quantity surveyor's report and staged progress payments. This guide covers who lends, the LVR limits by licence status, what you need to qualify, and what Westpac, NAB, AMP and the specialist brokers publish.
- Fewer lenders, bigger contribution: Building Loans Australia publishes that most banks will not lend and those that do want 40%; Home Loan Experts requires at least 30% of land value plus construction cost
- Indicative limits: up to 80% of project cost for a licensed builder building their own home, 70% for an unlicensed owner-builder, 100% with a guarantor at selected lenders (Home Loan Experts)
- Paperwork: state owner-builder permit and course, council-approved plans, fixed-price trade quotes, and a full quantity surveyor report that the banks require
- Funded in stages: Westpac and NAB publish progress draws with interest only on the amount drawn, valuer inspections and a final inspection before the last payment
- Interest-only during the build at NAB and AMP; AMP allows up to 12 months to build and up to 90% for an owner-occupier on its construction products
WARNING: This comparison rate is true only for the example given and may not include all fees and charges. Different terms, fees, or other loan amounts might result in a different comparison rate. Comparison rates are based on a secured loan of $30,000 over 5 years for vehicle finance and $50,000 over 5 years for equipment finance, as required under the National Credit Code.
What is an owner-builder loan?
Home Loan Experts describes it as a construction loan for borrowers who intend to manage or carry out the construction of their own home instead of engaging a licensed builder under a standard building contract, and Building Loans Australia adds that the owner-builder is the project manager hiring subcontractors for the trades, not a licensed builder. Every state requires an owner-builder permit, and Building Loans Australia publishes that an owner-builder course is mandatory in most states. The loan itself works like any construction loan: approved for land plus build, drawn in stages as each is completed, with interest charged only on what has been drawn.
Why do most banks decline owner-builders?
Building Loans Australia publishes the lender's view in three parts: owner-builder projects statistically have higher rates of delays and incompletion than licensed builds; if the work quality suffers, the bank's security loses value; and owner-builders commonly underestimate costs and run out of money mid-construction. Its founder is quoted on the consequence: a bigger deposit, fewer lender options, and a full quantity surveyor report to make sure the build is likely to come in on budget. There is no builder's home warranty insurance covering an owner-builder's own work, which removes the protection lenders rely on in a standard build.
How much can you borrow?
| Situation | Indicative lending limit | Contribution needed | Source |
|---|---|---|---|
| Licensed builder constructing their own property | Up to 80% of the project cost | 20% | Home Loan Experts |
| Owner-builder without a building licence | Up to 70% of the project cost | 30% | Home Loan Experts |
| Owner-builder with an acceptable guarantor | Up to 100% of land and construction with selected lenders | Guarantor security | Home Loan Experts |
| Banks that lend to owner-builders at all | Not stated | 40% deposit minimum as standard | Building Loans Australia |
| Home Loan Experts' own threshold | — | At least 30% of combined land value and construction cost before it assesses lender options | Home Loan Experts |
Project cost means the land value plus the construction cost excluding contingency, and lenders value the finished property, not your budget; if the completed value comes in below land plus cost, the LVR is measured on the lower figure. Serviceability is assessed on the full approved sum from day one, so run the borrowing power calculator on land plus build, not on the first stage.
What do lenders and specialists publish?
Checked against each lender's published page on 20 September 2026; "Not published" means the page does not state it. Policies change without notice, so confirm before relying on them.
| Lender or specialist | Owner-builder position | LVR or contribution | Build period and repayments | Progress payments and fees |
|---|---|---|---|---|
| Westpac | Construction option funds a licensed builder or your owner-builder project through each stage | Not published on the page | Lower repayments during the build because only drawn funds are charged | No progress draw or bank fees; valuer fee for progress inspections; builder's commencement letter sets the process; final payment after a satisfactory final inspection and a building insurance cover note; your own contribution goes in first |
| NAB | Construction loan page describes builds using registered builders | Not published | Interest-only options during the build period | Funds released in phases as construction progresses; $250,000 loan example with a $50,000 slab invoice; you pay interest only on what has been drawn |
| AMP | Build, renovate, land and construction loans; owner-builder policy not stated | Up to 90% of value for an owner-occupier | Up to 12 months to build, with an option to delay past 12 months; interest-only for up to five years; terms up to 30 years variable | Not published |
| Home Loan Experts (broker) | Accepts owner-builder applications with at least 30% of land plus construction | 80% licensed, 70% unlicensed, 100% with a guarantor at selected lenders | Not published | Assesses contribution first, then building experience, licence status and income |
| Building Loans Australia (broker) | Specialist in owner-builder finance; says most banks decline | 40% deposit standard at the banks that lend | Not published | Full quantity surveyor report required by the banks; state permit and course |
What you need to qualify
In the order a specialist assesses it, per Home Loan Experts: your contribution to the project, then your building experience and whether you hold a licence, then your income. The paperwork behind that is the state owner-builder permit and course certificate; council-approved plans and specifications; fixed-price quotes from each trade, which become the stage budget; a quantity surveyor's report on the total cost; evidence of your contribution in cash or land equity; and the usual income and expense documents. Westpac publishes that if your builder needs money upfront for plans you cover that yourself, and the same applies to your own design and approval costs before the loan starts.
Alternatives if the terms do not work
Engage a licensed builder for the structure and owner-build only the finishes, which turns the loan into a standard construction loan at up to 90% or 95% with LMI. Fund the build from equity in your current home with a top-up, so the lender is securing a finished house rather than a project. Use a guarantor for the 100% route Home Loan Experts describes. Or buy the block on a land loan and build when the contribution is there. A broker who places owner-builder loans knows which of the smaller lenders is writing them this quarter, and Your Finance Guide refers you to one licensed broker partner for that; we do not lend or assess applications ourselves.
Building and land guides
The loan types around an owner-managed build.
Owner-builder loan FAQs
Is being an owner builder worth it?
Which lenders do owner-builder loans?
How much can I borrow as an owner-builder?
What documents do I need?
How do progress payments work for an owner-builder?
Can I make interest-only repayments while building?
What if the build runs over budget?
Build it yourself, finance it properly
Tell us the land, the budget and whether you hold a licence, and we refer you to one licensed broker partner who places owner-builder loans and prices the alternatives. Free for borrowers, no obligation.