Off-the-Plan Purchase Risks in Australia
Published 28 April 2026
Buying a property before it is built can work out well, but it carries risks an established property purchase does not. Here is what to look out for.
An off-the-plan purchase means signing a contract to buy a property, usually an apartment or townhouse, before construction is finished and sometimes before it has started at all. This structure can suit buyers who want a brand new home, are willing to wait, and value the extended settlement period it typically allows for saving a larger deposit, along the lines set out in MoneySmart's guide to saving for a house deposit. It also carries a distinct set of risks that do not apply, or apply much less, to buying an established property, and understanding them before signing is far more important than it is for a standard purchase.
Sunset Clauses and Construction Delays
Almost every off-the-plan contract includes a sunset clause, which sets a date by which the development must be completed and registered, failing which either party, and sometimes only the developer, can terminate the contract. Construction running over schedule is common in this sector, and in most cases the parties simply extend and settle once the building is finished. The risk arises when a sunset clause allows the developer to walk away from the contract if the date is missed, particularly in a rising market where the developer could resell the finished property for more than your original contract price. Reading the sunset clause carefully, and understanding exactly who can terminate under it and in what circumstances, is one of the most important parts of reviewing an off-the-plan contract before you sign.
Developer Insolvency
Because settlement can be years away from the date you sign, there is a real risk that the developer runs into financial difficulty before the project is completed. If a developer becomes insolvent partway through construction, your deposit is usually held safely in a trust account, but the project itself may stall, be sold to another developer, or in a worst case not be completed at all. Checking a developer's track record, the financial structure behind the project, and how your deposit is being held are all reasonable questions to raise before committing, and a conveyancer reviewing the contract can help identify how much protection the specific contract terms actually provide.
Plans, Renders and the Finished Build
Marketing material for an off-the-plan development typically includes artist renders, display suites and indicative floor plans, all of which are designed to sell the vision of the finished building rather than serve as a binding description of exactly what you will receive. Most contracts include a tolerance clause allowing for minor variations in dimensions, finishes and fittings between what was shown and what is ultimately built. Genuine problems arise when variations go beyond what most buyers would consider minor, such as a materially reduced ceiling height, a different aspect than advertised, or substituted finishes of noticeably lower quality. Reviewing exactly what the contract commits the developer to, rather than relying on the display suite or brochure, is essential, since verbal assurances from a sales agent generally have no legal weight once the contract is signed.
Building Defects and Warranty Schemes
New buildings, including apartment developments, can and do have defects, ranging from minor finishing issues to more serious structural or waterproofing problems. Every state has some form of statutory warranty or defect bond scheme intended to give buyers recourse after settlement, though the specific mechanism, time limits and what is covered differ by jurisdiction. In some states, a portion of the contract price is held back specifically to cover rectification of defects identified after occupation, while others rely more heavily on statutory home warranty insurance. Because these schemes are not identical everywhere, it is worth understanding what applies in your state and what steps you need to take, and by when, if defects are identified after you move in.
Staged Payments and Deposit Structures
Off-the-plan contracts sometimes involve a deposit structure that differs from a standard purchase, and it is worth understanding exactly how your deposit is protected before you sign rather than assuming it works the same way as buying an established home. Most jurisdictions require deposits to be held in a trust or controlled account until settlement, but the specific rules around release, interest, and what happens if the contract is terminated vary. Some contracts also include provisions for the developer to make variations to the plans, common property, or even the outline of the development during construction, subject to conditions set out in the contract. Understanding what variations a developer is permitted to make without your consent, and what recourse you have if a variation is significant, is another reason a full read of the special conditions matters more here than for a typical resale property.
Why Contract Review Matters More Here
A standard contract of sale for an established property is largely dealing with a known, physical asset that can be inspected before you commit. An off-the-plan contract is dealing with a promise about a future asset, governed by sunset clauses, variation tolerances, staged payment terms, and sometimes complex arrangements around a subdivision or strata plan that has not yet been registered. This is exactly why contract review before signing matters more for an off-the-plan purchase than for almost any other type of transaction, and why rushing to sign at a display suite without that review carries a disproportionate amount of risk relative to the deposit you are putting down.
If you are considering an off-the-plan purchase in a market such as Melbourne, it is worth remembering that the extended timeline between contract and settlement, discussed further in our guide to how long conveyancing takes, is itself part of the risk profile, since more can change over a longer period than it can in a standard settlement window.
Get a Fixed-Fee Quote
Tell us about your transaction and we will respond within two business hours with a clear, fixed-fee quote.
Get a Free QuoteMore Conveyancing Guides
What Happens at Settlement
A step-by-step look at settlement day, including PEXA electronic settlement.
Read MoreSection 32 Vendor Statement Explained
What must be disclosed to a buyer before a sale in Victoria.
Read MoreEasement Explained Australia
How easements can affect what you can and cannot do with a property.
Read More