Finance risk on a long off-the-plan build — NSW and Victoria

The short version

When you buy off-the-plan, you sign now and settle later — sometimes one, two or three years later, once the plan registers. The catch is that a home loan approved today does not stay approved that long. Your lender re-checks your income and re-values the property at settlement, and if either has moved the wrong way, you can be left with a shortfall you have to cover in cash — with only a couple of weeks to find it. Off-the-plan finance is a timing problem as much as a money one.

Why finance is different off-the-plan

On a normal purchase you settle on a fixed date six or so weeks after exchange, and your loan is arranged around it. Off-the-plan, settlement is triggered, not scheduled: it starts running once the vendor tells you the plan has registered and the building has its occupation certificate (NSW) or occupancy permit (Victoria). That trigger might land a year or more after you signed — and a mortgage pre-approval typically lasts only three to six months. So the approval you rely on when you sign will almost always have lapsed long before you need the money. You are, in effect, promising to obtain a loan you can't yet be granted.

The valuation gap

This is the risk that catches the most buyers. Near settlement, your lender sends a valuer to assess the finished property, and the bank lends a percentage of whichever is lower — the valuation or the price you agreed. If the market has cooled, or comparable sales in the building came in below your contract price, the valuation can land under what you're contracted to pay. The bank still lends against the lower figure, so the difference falls to you in cash, on top of your deposit. In a long build through a flat or falling market, a gap of tens of thousands is not unusual — and it arrives exactly when your budget is already stretched.

Your circumstances can drift, too

A lot can change across a multi-year build. Interest rates rise, which shrinks how much a bank will lend you. You might change jobs, move to a single income, take parental leave, or take on a car loan or a buy-now-pay-later balance that dents your serviceability. Lending policy itself tightens and loosens over time. Any of these can mean the loan you comfortably qualified for at signing is no longer on offer when you actually need it — even if the valuation is fine.

The short settlement window

Once the plan registers, off-the-plan contracts usually give you a tight window — commonly around two to three weeks — to complete. That is rarely enough time to arrange finance from scratch, revalue, and satisfy a lender's conditions. The work has to be largely done before the trigger, which is why staying in touch with your broker or lender through the build matters more here than on any other kind of purchase. There's more on how the trigger works in our settlement and occupation certificates guide.

What happens if you can't settle

This is the consequence worth understanding before you sign, not after. If you can't complete on time, the vendor can serve a notice requiring you to settle within a set period (a notice to complete in NSW, a default notice in Victoria). If you still can't, the vendor can terminate, keep your deposit, resell the property, and pursue you for any shortfall on the resale plus costs. Failing to settle is not a soft exit — it is one of the most expensive outcomes in property, which is why the finance plan is the part of an off-the-plan purchase to get right early.

Ways buyers manage it

There's no way to remove the risk, but you can reduce it: buy with a genuine buffer below your maximum, so a lower valuation or a rate rise doesn't sink the purchase; keep your finances stable through the build and avoid new debts; and ask your broker to reassess your position periodically rather than assume the pre-approval still stands. Some buyers also consider a deposit bond to avoid tying up cash for years — but that's about the deposit, not the settlement finance, and the contract has to accept one.

What to check before you sign

1. How long the build could realistically take — read the sunset date and any vendor extension rights, because that's how long your finance risk runs.
2. The settlement window after the trigger — how many days you get once the plan registers, and whether it's enough to finalise a loan.
3. Your buffer. Model the purchase at a higher interest rate and a lower valuation, not just today's numbers.
4. Whether a "subject to finance" condition applies. Most off-the-plan contracts are unconditional on finance — you carry that risk yourself.
5. A plan for re-approval near settlement — agree with your broker now how you'll revalue and re-qualify when the trigger comes.

Common questions

Isn't my loan locked in when I sign?

No. What you usually have at signing is a pre-approval, which is conditional and time-limited. Formal, unconditional approval comes close to settlement, once the lender has valued the finished property and re-checked your finances. The gap between the two is where off-the-plan buyers get caught.

What if the property is valued below what I agreed to pay?

The bank lends against the lower valuation, so you make up the difference in cash. If you can't, you may not be able to settle — which is why a buffer matters. A short guide can't tell you your borrowing position; a broker or lender can model it against your numbers before you commit.

Can I add a "subject to finance" clause to an off-the-plan contract?

You can ask, but most off-the-plan contracts are offered unconditional on finance and vendors rarely agree to change that. Assume the finance risk sits with you, and price your buffer accordingly. For the wider picture, see our NSW and Victorian off-the-plan guides.