Buying a home that hasn’t been built yet means you are signing a contract based on plans, 3D renderings, and a display suite rather than a finished property. In Australia, this is known as buying off-the-plan, and it locks in your purchase price today, but the property might not be ready for a year or more. The risk is that by the time you settle, the bank’s valuation could come in lower than what you agreed to pay, leaving you to find the difference in cash.
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This article is general information only and does not constitute professional advice. For your specific situation, consult a qualified professional.
That gap between signing and settlement is where the fine print matters most. Developers draft these contracts to protect their own interests, and the language can shift risk onto you in ways that aren’t obvious at first glance. Here’s what you actually need to know.
What “off-the-plan” actually means in your contract
When you buy off-the-plan, you are not buying a house. You are buying a promise — a legal agreement that the developer will build something that matches the plans and specifications attached to the contract. The central concept here is the sunset clause.
That clause sets a deadline for completion. If the developer misses it, they can walk away, return your deposit, and sell the property to someone else at a higher price. In NSW, laws now restrict how developers can use sunset clauses, but in other states the protections are weaker. What I tend to notice is that most buyers focus on the floorplan and the finishes, not on the legal mechanics of how the contract can be unwound.
What changes when you sign before construction starts
The biggest shift is that you take on market risk for the entire construction period. If property values in the area fall by the time your apartment is finished, the bank’s valuation will reflect that. A Forbes Australia guide notes that a valuation shortfall means you either need to bring extra cash to settlement or renegotiate with the developer — and they are not obliged to lower the price.
Construction delays are another reality. Weather, labour shortages, and supply chain issues can push completion back by months or even years. During that time, your financial situation might change — interest rates could rise, or your borrowing capacity could shrink. Your home loan approval typically expires after 90 days, so you will need to be reassessed closer to settlement. If your income or credit profile has changed, the lender may not offer the same amount.
There is also the risk of developer insolvency. If the developer goes bankrupt before finishing the project, your deposit is held in a trust account, but recovering it can take time and legal effort. You are an unsecured creditor in that situation. Checking the developer’s track record on past projects is one way to gauge this risk, and you can get help reviewing their history through a service like JustAnswer Real Estate Law.
Where buyers get tripped up by the fine print
Variation clauses that allow changes without your approval
Most off-the-plan contracts include a clause that lets the developer substitute materials, fixtures, or finishes with items of “similar quality.” The problem is that “similar quality” is subjective. A developer could swap engineered stone for laminate and argue it meets the standard. You have limited recourse unless the change is a major reduction in the size of the property — some states allow you to cancel the contract if the floor area shrinks by more than a certain percentage. Always ask for a detailed schedule of finishes before signing, and have your solicitor flag any language that gives the developer broad substitution rights.
Misunderstanding the cooling-off period
Cooling-off periods for off-the-plan purchases vary by state. In NSW, you get 10 business days, which is double the five days for an established home. But in other states, the period may be shorter or non-existent. The clock starts ticking from the moment you sign the contract, not from when you receive all the documents. If you change your mind after that window closes, you forfeit your deposit. A solicitor can advise you on the specific rules in your state and help you use that cooling-off period effectively — for example, by arranging a JustAnswer Legal consultation to review the contract immediately after signing.
Overlooking the defect liability period
After settlement, you typically have a defect liability period — often 90 days — during which the builder must fix issues like cracked tiles, leaking taps, or faulty appliances. Many buyers assume this period is longer or that it covers everything. It usually only covers defects that were present at the time of completion, not things that emerge later due to poor workmanship. Your contract will specify the exact timeframe and what qualifies as a defect. If you miss the window, you pay for repairs yourself. A pre-settlement inspection is your best chance to catch problems before you take ownership.
Ignoring the developer’s track record
It is easy to get swept up in a glossy display suite and a persuasive sales agent. But the developer’s history matters more than the brochure. Have they completed similar projects on time? Were there complaints about quality or delays? You can search for news articles, check online forums, or ask the developer directly for references from past buyers. If they are reluctant to share, that is a red flag. A developer with a strong track record is less likely to trigger the sunset clause or go insolvent.
How to read the contract and protect yourself
Start with the sunset date and what happens if it’s missed
The sunset clause should specify a realistic completion date. If the developer misses it, the contract should allow you to either extend the date or cancel and get your deposit back. Some contracts give the developer the sole right to extend the sunset date, which is a risk. Your solicitor can negotiate for a mutual extension clause — meaning both parties must agree. Also check whether the developer can cancel the contract if the market has risen and resell at a higher price. In NSW, the Conveyancing (Sale of Land) Regulation 2022 requires developer to get buyer consent or a court order before rescinding under a sunset clause, but this protection does not apply in all states.
Scrutinise the schedule of finishes
This document lists every fixture, fitting, and finish in the property — from the kitchen benchtop to the bathroom tapware. It should specify brands, model numbers, and colours. If the schedule says “or similar” next to an item, the developer can substitute it without telling you. Push for a schedule that locks in specific products. If the developer refuses, factor that uncertainty into your decision. You can also ask about the property market volatility in the area and how it might affect the finished value.
Understand the deposit structure and trust account
Your deposit — typically 5–10% of the purchase price — is held in a solicitor’s trust account or a licensed conveyancer’s account until settlement. This protects your money if the developer goes under, but it does not guarantee you will get it back quickly. In some cases, the developer may ask for a bank guarantee instead of cash. A bank guarantee is a written promise from your bank to pay the developer if you default. It does not tie up your cash, but it does reduce your flexibility if you need to walk away. Ask your solicitor which option makes more sense for your situation.
Plan for the pre-settlement inspection
About two weeks before settlement, you will have the chance to inspect the finished property. This is not a casual walkthrough. Bring the contract’s floorplan and schedule of finishes. Check that every room matches the dimensions on the plan. Test taps, lights, and appliances. Look for cracks in walls, uneven flooring, and gaps around windows. If something is wrong, document it with photos and notify your solicitor immediately. The developer may be required to fix issues before settlement, but only if you flag them in time. If you skip this step, you lose the chance to hold the developer accountable before you hand over the final payment.
Frequently asked questions
Can I sell my off-the-plan contract before settlement? ▾
What happens if the developer changes the floorplan after I sign? ▾
Do I pay stamp duty at contract signing or at settlement? ▾
Can I use a self-managed super fund to buy off-the-plan? ▾
What is a “holding deposit” and is it refundable? ▾
Does buying off-the-plan affect my eligibility for first-home buyer grants? ▾
The fine print is where the real deal lives
Buying off-the-plan is not a simple transaction. The glossy brochure and the display suite are designed to sell you on a vision, but the contract is where the actual terms of that vision are written. Every clause — from the sunset date to the variation rights — can shift risk onto you. The best protection is a specialist solicitor who reads the fine print before you sign, not after. If you are considering this path, start with the developer’s track record and the contract’s key clauses, and treat the display suite as a starting point, not a promise.
Remember: this article is general information only. For advice on your specific situation, speak to a qualified professional.
If this was useful, you might also want to read Is the Australian Housing Market Overvalued? A Realistic Perspective.
Sources and Further Reading
The Impact of Interest Rates on Australian Property — Understand how rate changes affect your borrowing power and property values during the construction period.
Why More Australians Are Investing in Properties with High Walkability Scores — Location factors that influence long-term property value, relevant when choosing an off-the-plan project.
Unloan (2025). Buying off-the-plan property explained. 🔗
Frasers Property (2025). Buying off-the-plan. 🔗
LawDocs (2025). Buying off-the-plan Australia 2025. 🔗
Forbes Australia (2025). Buying off the plan. 🔗
