Building a new home in 2026: what the approvals boom means for your construction loan

29 July 2026 · Construction loans · 8 min read

If you're weighing up building versus buying established, the data released in the past few weeks tells an interesting — and slightly contradictory — story. The total number of dwellings approved fell 1.1 per cent in May to 17,019, but private sector house approvals rose 2.8 per cent, to the highest level since September 2021, the fourth consecutive month with over 10,000 private sector houses approved, while the fall in total dwellings approved was driven by a 10.4 per cent fall in private dwellings excluding houses, after a 4.0 per cent April rise. In other words: standalone house building is having a genuine moment, even as apartment approvals slide.

At the same time, established property values are cooling. Cotality's National Home Value Index fell 0.4% in June 2026 — the third consecutive monthly decline and the largest single-month drop recorded since December 2022. Analysts point to higher borrowing costs weighing on affordability and a tax crackdown on investment properties dampening buyer demand as part of the reason. And the cash rate itself isn't going anywhere in a hurry: the RBA Board has decided to leave the cash rate target unchanged at 4.35 per cent, with the three increases in the cash rate target since the beginning of the year meaning financial conditions are now tighter than they were. The next decision lands at the Board's Monetary Policy Decision meeting on 10–11 August 2026.

Put those three data points together — more houses being approved, established values softening, rates holding at an elevated level — and it's easy to see why building is back on the table for a lot of buyers. But a construction loan behaves very differently to a standard mortgage, and the approvals boom doesn't tell you anything about whether your build will actually start on time, or what happens to your budget if it doesn't.

Approvals aren't commencements — and that gap matters to your loan

A building approval is a council or private certifier signing off on a plan. It isn't a shovel in the ground, a slab poured, or a builder with capacity to start your job this quarter. Construction finance is drawn down in stages tied to actual work completed — base, frame, lock-up, fit-out, completion — so a delay between approval and commencement doesn't just push out your moving-in date, it can push out when your loan converts from an approved facility to a fully drawn one, and it extends the period you're often paying interest on a partially drawn loan alongside rent or an existing mortgage.

This is worth asking your builder about directly: what's their current quoted lead time from contract signing to slab, and has that moved in the last six months? With approvals running hot, some builders and trades are booked out further than they were a year ago, which can affect fixed-price contract validity periods — most fixed-price building contracts only hold their price for a set window before cost escalation clauses kick in.

What a construction loan actually funds — and what it doesn't

Unlike a standard home loan, a construction loan is typically an interest-only facility during the build, with funds released in progress payments as each stage is inspected and signed off. Lenders will usually want a fixed-price building contract, council-approved plans, and often a valuation based on the 'as if complete' value of the finished home, not just the land. Land, holding costs, council fees, and any variations to the original contract are things to have provisioned for separately — variations in particular can catch borrowers out, since they're rarely covered by the original loan approval and may need a fresh serviceability assessment mid-build.

Illustrative example: budgeting for a staged build

The following is an illustrative example only and does not reflect any actual loan, lender or outcome. Consider a couple who have their land, a fixed-price building contract for $520,000, and a construction loan approved against that contract. Over an eight-month build, funds are drawn in five stages. If the builder's start date slips by three months due to trade availability — not unheard of in a busy approvals environment — the couple may be paying rent, land holding costs, and interest on the drawn portion of the loan simultaneously for longer than originally budgeted. Building in a contingency buffer, and confirming with a broker what happens to serviceability if the build timeline extends, is the kind of conversation worth having before contracts are signed rather than after.

Building against a cooling established market

Falling values in the established market can cut both ways for someone building. On one hand, a softer market may mean less urgency to compete for an existing home, and more time to get a build right. On the other hand, if your construction loan's final valuation relies on comparable sales in your area, a cooling market can affect the 'as if complete' figure a lender's valuer arrives at — which in turn affects how much of the build costs are covered by the loan versus your own funds. This is a genuinely lender-specific and location-specific question, which is exactly the kind of detail a broker can walk through against your actual contract and postcode, rather than against a national average.

If you're refinancing mid-build or rolling equity from an existing loan

Some borrowers are financing a build by using equity in an existing property, particularly if that property's fixed rate is coming up for renewal. If that sounds like your situation, it's worth reading our piece on the 2026 fixed-rate cliff alongside this one, since the timing of a rate expiry and a construction drawdown schedule can interact in ways that are easy to miss if you're looking at each in isolation. Our refinance page and the refinance home loan hub cover the broader options if restructuring an existing loan is part of the picture.

Common questions

Do I need full council approval before applying for a construction loan?
Most lenders want council-approved plans and a fixed-price building contract before they'll formally approve a construction loan, though some will assess your borrowing capacity earlier in the process. A broker can talk through what a specific lender needs at each stage.

What happens if my build costs more than the original contract?
Variations to a fixed-price contract usually aren't automatically covered by your original loan approval. Depending on the size of the variation, a lender may need to reassess serviceability or ask for the difference to be funded from your own savings.

Is a construction loan harder to get than a standard home loan?
It involves more documentation — plans, contract, valuations at each stage — and lenders vary in how they assess partially built security, so it's a different process rather than necessarily a harder one. This is an area where using a broker familiar with construction lending can help you avoid submitting to a lender whose policies don't fit your build.

Can first home buyers use a construction loan?
Yes, and building rather than buying established is a path some first home buyers consider, sometimes alongside government schemes. See our first home buyer page and the first home buyer help hub for more on how that combination is generally approached.

Use the calculators to get a general sense of repayments at different stages of a build before you speak with a broker about your specific contract.

General information only — not credit advice. Credit assistance is provided by a licensed mortgage broker.