There's something deeply exciting about building a home from the ground up. You choose the layout, the kitchen, the light through the living room window, every decision is yours. But if you've started looking into how to finance the build, you've probably discovered that a construction loan works very differently from a standard home loan.
That difference trips up more borrowers than you might think. So, in this article, we'll walk you through how construction loans actually work in Australia, the common pitfalls we see, and the questions worth asking before you sign anything.
A construction loan is a specialised type of home loan designed for building a new home, undertaking a substantial renovation, or buying land and building in stages. Unlike a standard mortgage, where the lender hands over the full loan amount on settlement, a construction loan releases funds progressively as each stage of the build is completed.
These stages are typically:
1. Deposit / slab - the foundation is poured
2. Frame - walls and roof trusses go up
3. Lock-up - external walls, windows and doors are in
4. Fixing - internal fit-out, cabinetry, plaster
5. Completion - final finishes, council sign-off and handover
At each stage, your builder submits an invoice, the lender may inspect the progress, and funds are released directly to the builder. You only pay interest on the amount drawn down so far, not the full loan. That can make the build phase more manageable for your cash flow, though it also means your repayments will gradually increase as more funds are released.
There are a few features of construction lending that catch borrowers off guard. Knowing them up front makes a real difference.
1. You usually need a fixed-price building contract.
Most lenders will want to see a signed, fixed-price contract from a licensed builder before they approve finance. Owner-builder loans are possible but are a different product with tighter criteria.
2. Council approvals and plans matter.
Lenders typically require council-approved plans, a detailed schedule of works, and in some cases, an "as if complete" valuation of the finished property.
3. Interest-only during the build.
During construction, you'll generally make interest-only repayments on drawn funds. Once the home is complete, the loan usually converts to a standard principal-and-interest home loan.
4. Timeframes and extensions.
Most construction loans have a build period (often 12–24 months). Delays happen, weather, materials, trades and lenders may charge for extensions, so it's worth factoring that into your plan.
5. Contingency matters.
Building almost always throws up surprises: a site-cost variation here, a PC-item upgrade there. Building a buffer into your budget is one of the smartest things you can do.
The construction lending landscape in Australia has shifted noticeably over the past few years. Cost-of-construction pressures, tighter builder margins, and a changing interest rate environment have all influenced how lenders assess these applications. A few things we're seeing in the market right now:
- Lenders are paying closer attention to builder financial stability, not just yours
- Valuations "as if complete" are being scrutinised more carefully
- Contingency allowances and cash buffers are viewed favourably during assessment
- There's a wider-than-usual gap between lenders on how they treat construction applications, which makes product selection particularly important
This is one of the reasons we encourage people to speak with a broker early, ideally before you sign a building contract, not after.
Building can be an attractive path for first home buyers, particularly where house-and-land packages open up more affordable suburbs. Depending on eligibility, you may be able to access:
- The First Home Owner Grant (varies by state; in some states, it's specifically targeted at new builds)
- Stamp duty concessions for newly built homes
- The Home Guarantee Scheme (eligibility rules apply)
Each scheme has its own criteria, caps and timing considerations. We can help you work out which ones you may be eligible for and how they interact with your construction loan.
For property investors, building offers some advantages, a brand-new property typically means:
- Full depreciation benefits (please speak with your accountant or tax adviser for personal tax advice)
- Lower maintenance costs in the early years
- Appeal to tenants seeking modern features
It also comes with considerations: a longer timeline to rental income, exposure to build-cost variations, and holding costs during construction. Whether a build or an established property is the better fit depends on your overall strategy, cash flow and risk tolerance.
Over our 30+ years helping Australians into homes, a few patterns come up again and again:
1. Signing a building contract before finance is arranged. This narrows your options considerably and can cost you if the numbers don't line up.
2. Underestimating site costs. Sloping blocks, rocky soil, bushfire zones and service connections can all add tens of thousands to a build.
3. Choosing a builder based on price alone. Cheaper quotes sometimes reflect fewer inclusions or a builder under financial stress. Lenders look at this too.
4. Not allowing a contingency buffer. Industry rule of thumb: allow 5–10% of the build cost as a contingency.
5. Overlooking the "as if complete" valuation. If your lender's valuation comes in below contract price, you may need to top up with additional funds.
6. Missing progress-payment deadlines. Delays in signing off progress claims can hold up your builder and disrupt the schedule.
Whether you're meeting with a builder, a display-home consultant, or a lender, these questions will save you headaches:
- Is the contract a true fixed-price, or are there provisional sums?
- What's included in site costs, and what might be variable?
- What's the builder's current build timeline and recent project history?
- Does my lender offer progress inspections, and what do they cost?
- What's the loan's interest-only period during construction, and what happens if the build runs over?
- What does the loan convert to once the build is complete, and can I choose the product?
Construction lending is one of the more involved corners of the mortgage market, but it doesn't have to feel overwhelming. Our team has been helping Australians finance new builds, knock-down-rebuilds and house-and-land packages for more than three decades, with 80+ years of combined broker experience across our senior team.
When you work with us on a construction loan, we'll:
- Review your borrowing position and work out what's realistic before you sign a contract
- Compare construction loan products across our wide panel of lenders
- Walk you through the progress-payment process so there are no surprises
- Support you from pre-approval through each drawdown and into the completed home loan
- Remain your dedicated broker for the life of your loan, not just until settlement
Our advice is complimentary for residential construction loan enquiries, there's no cost to you for our service, as we're paid by the lender you ultimately choose (and we'll always disclose this clearly). You can read more about how broker remuneration works on our website.
Whether you're in the daydreaming-over-Pinterest stage or you've already got plans drawn up, we'd love to help you work out the finance side.
📞 Call us on 1300 851 103
📧 advice@mortgageachievers.com.au
💬 Book a complimentary phone consultation with one of our brokers
📚 Or download our E-Books
With offices in Melbourne VIC and Bardon QLD, and a team that works Australia-wide, we're here whenever you're ready.
This article is general information only and does not take into account your personal circumstances, objectives or financial situation. You should consider whether the information is appropriate for you and seek advice tailored to your needs. Lending criteria, fees and eligibility apply. Mortgage Achievers operates under Connective Credit Services ACL #389328, Credit Representative No. 545581.