Soaring prices and thin supply made buying impossible. So they built instead.
After 18 months of searching with house prices continuing to climb, one Melbourne couple found a different path. When they discovered a subdivided vacant block in Reservoir, they chose to build their home from scratch rather than compete for an established property that didn’t quite fit. A construction loan in Australia made it possible.
Building from scratch isn’t for everyone. But in a market where supply is tight and the right home in the right suburb is hard to find, understanding how construction loans work is worth your time.
Why buyers are building
House prices in many Australian suburbs have continued to rise even as auction clearance rates soften. In areas where suitable established homes are rare and competition for good properties remains strong, vacant land parcels and knockdown-rebuild opportunities are drawing growing interest from buyers who can’t find what they want on the open market.
For many buyers, the maths can stack up. Purchasing land at a lower price point and building to a fixed-price contract can deliver a home that meets your exact needs. The total cost is often more predictable than buying an established property and carrying out major renovations. You also get a new home with modern standards and full builder warranties.
The key is understanding how to finance a build, because the process differs significantly from a standard home purchase.
What is a construction loan
A standard home loan is straightforward. The lender provides the full approved amount at settlement and repayments begin from day one. A construction loan works differently.
With a construction loan, funds are released in stages as the build progresses rather than as a single lump sum. During this period you only pay interest on the amount that has been drawn down so far. This means your repayments are lower during the build than they will be once the full loan balance is advanced.
Most lenders require a fixed-price building contract before they will approve a construction loan. This document establishes the total cost of the build and limits the risk of cost changes mid-project. Once the final drawdown is made at completion, the loan converts to a standard principal and interest home loan and your regular repayments begin.
How drawdowns work
A typical residential construction loan is split into five stages, each linked to a completed milestone in the build:
Estimating your repayments at each drawdown stage helps you budget more accurately through the build. Your interest bill grows as each payment is released, so modelling this in advance is a good habit.
Getting approved to build
Lenders assess construction loan applications differently from a standard home purchase. Along with your usual income, credit history, and deposit documentation, you will also need to provide a signed fixed-price building contract, council-approved plans, and a valuation of the completed property.
Most lenders will advance up to 80 per cent of the combined land and construction value without requiring lenders mortgage insurance. Some will go higher if you are willing to pay LMI. Checking your borrowing power before you sign any contracts is essential. Your capacity needs to cover both the land purchase and the full cost of construction.
Lenders assess the loan against the estimated completed value of the finished home, not just the price of the land. If the completed property is valued above the total project cost, you may find the approval process smoother than expected.
Managing the risks
Building from scratch involves more moving parts than buying an established home. A few risks are worth understanding before you commit.
Cost overruns. A fixed-price contract protects you from unexpected increases, but any variations you request or work outside the contract scope can add to the total. Keep a contingency budget of at least 10 per cent of the construction cost.
Builder insolvency. Builder collapses do happen in Australia and can leave buyers in a very difficult position mid-build. Knowing the warning signs that a builder may be in financial trouble can save you from significant cost and stress. Always verify your builder’s licence and confirm their insurance cover before signing any contract.
Construction delays. Delays are common and extend the period during which you are paying interest-only on the loan. Build a realistic timeline into your planning and stay in regular contact with your builder throughout the project.
Common questions
Q: Can I use a construction loan for a knockdown rebuild?
Yes. A construction loan can fund a knockdown rebuild on land you already own or are purchasing. The process is similar to building on a vacant block. You will need council approval for the demolition and for the new build, plus a fixed-price contract with a licensed builder.
Q: How much deposit do I need for a construction loan?
Most lenders require at least a 20 per cent deposit based on the combined land value and construction cost to avoid lenders mortgage insurance. Some lenders will accept a smaller deposit if you are prepared to pay LMI. Your total borrowing capacity must be sufficient to cover the full project cost, including land and build.
Q: What if I am still renting while I build?
This is one of the biggest practical challenges of building from scratch. During construction you are paying interest on the loan as well as your ongoing housing costs. Planning your budget carefully and keeping your build timeline as tight as possible helps minimise the overlap. Some lenders will factor this dual cost scenario into their serviceability assessment.