A property can look perfect at an open home and still carry restrictions, costs or risks that materially affect its value and your plans for it. The top due diligence property checks are about finding those issues before you exchange contracts, when you still have choices, rather than after you have made a binding commitment.
For a first-home buyer, that may mean confirming there is no unapproved deck or costly strata work ahead. For an investor or commercial buyer, it may mean understanding a lease, access right or planning restriction that affects future income. In NSW, a careful contract review and targeted enquiries are the foundation of a well-informed purchase.
Start with the contract, title and registered interests
The contract for sale is not simply paperwork for signing. It is the legal record of what is being sold, what rights come with the land, and what restrictions may affect it. Your conveyancer should review it before you exchange, not after an offer has been accepted on a verbal understanding.
A title search confirms the registered owner and identifies interests recorded on the title. These can include mortgages, easements, covenants, caveats and leases. Some are routine. A drainage easement, for example, may be common and manageable. But it can limit where you build, place a pool or extend a home. A right of carriageway can affect access and privacy, while a restrictive covenant may prevent a type of development you had in mind.
The deposited plan also matters. It helps confirm boundaries, dimensions and easement locations. If a fence, garage, retaining wall or driveway appears close to a boundary, a survey may be sensible. Do not assume the occupation you can see matches the legal boundary. Resolving an encroachment after settlement can be expensive and stressful.
Your legal adviser should also check whether the contract includes the prescribed NSW disclosure documents and whether any notices or proposals affect the property. The absence of a required document can be significant, but it is better to identify and address an issue early than rely on a technical remedy later.
Check planning controls before your plans become expensive
A 10.7 planning certificate provides key information about zoning and planning controls. It can identify whether the land is affected by matters such as heritage listing, bushfire-prone land, flood-related controls, road widening proposals or environmentally sensitive land. It also indicates permitted uses under the relevant local environmental plan.
This is particularly important when a purchase is driven by a future plan. You may hope to add a granny flat, renovate extensively, operate a business from home, subdivide, demolish or develop the site. Zoning is only the starting point. Overlays, development standards, minimum lot sizes, heritage controls and site-specific constraints can all change what is realistic.
Flood and bushfire information deserves close attention. A property can be liveable and insurable today but still have higher building requirements, insurance premiums or limitations on future works. The practical question is not only whether a property is affected, but how that risk will influence your use, borrowing capacity, insurance and resale appeal.
For apartments and townhouses, check the planning context around the building as well. A vacant block next door may have approval potential for a larger development. That may affect views, light, privacy, construction noise and the long-term character of the area.
Look beyond the building inspection
A building and pest inspection is one of the most recognised due diligence steps, but it should not be treated as a blanket guarantee. The report usually has limits, and inspectors may not be able to access roof cavities, subfloors, concealed areas or locked structures. Read the report carefully and ask follow-up questions where a defect is identified.
Water damage, movement, termite activity, poor drainage, unsafe electrical work and unapproved structures can create very different levels of risk. Some defects are ordinary maintenance. Others may require specialist advice, further investigation or a serious reconsideration of the purchase price.
If the property has a pool or spa, confirm its compliance position and whether any relevant certificate is available. If there are solar panels, a fireplace, air conditioning system or other inclusions you consider essential, make sure the contract properly identifies what is included. Items left behind at an inspection are not automatically part of the sale.
Council records and approvals can also be worth checking, particularly where alterations are apparent. An enclosed balcony, converted garage, extension or secondary dwelling may add appeal, but if it was not properly approved it may create a future compliance problem. This is an area where the right response depends on the facts, the work involved and your appetite for risk.
The top due diligence property checks for strata buyers
Buying into a strata scheme means buying a home and taking on shared financial and legal responsibilities. The contract will include strata information, but a strata records inspection provides a much clearer view of how the owners corporation is operating.
The inspection should review meeting minutes, financial statements, insurance, by-laws, the capital works fund and correspondence. It may reveal recurring water leaks, building defects, disputes, special levies, litigation or substantial work being discussed. A low quarterly levy can look attractive, but it may not be a benefit if the scheme has inadequate reserves for known repairs.
By-laws are equally relevant to everyday enjoyment and investment plans. They may regulate pets, flooring, parking, smoking, renovations, short-term letting and the use of common property. If you intend to install timber flooring, keep a dog or lease the property, confirm the rules before committing.
For newer buildings, buyers should be alert to defect history and any current building rectification work. For older blocks, the focus may be on concrete spalling, roofing, lifts, balconies, plumbing or façade maintenance. Neither new nor old automatically means better. What matters is the scheme’s records, financial capacity and approach to managing known issues.
Confirm finance, insurance and the true cost of ownership
Pre-approval is helpful, but it is not a final loan approval for a particular property. Your lender may value the property below the agreed purchase price or impose conditions based on its type, location or condition. This can be more common with unusual properties, small apartments, rural holdings or homes with unapproved improvements.
Where possible, have finance arranged before exchange or ensure the contract terms properly reflect your position. Once contracts are exchanged, the consequences of being unable to complete can be significant. You may risk losing your deposit and becoming liable for further loss.
Insurance needs attention from exchange, not just settlement. In NSW, the risk in a standard residential sale can pass to the purchaser on exchange, even though settlement occurs later. Arrange appropriate cover promptly and check that the insurer is comfortable with the property’s location, construction and any identified risks.
Then look at holding costs with clear eyes. Council rates, water charges, land tax where relevant, strata levies, insurance, maintenance and likely repairs all affect affordability. For an investment property, consider realistic rent, vacancy periods, management fees and compliance costs rather than relying only on an optimistic rental estimate.
Ask the questions that fit this particular property
No two purchases need precisely the same enquiries. A freestanding home near a creek may call for detailed flood and drainage consideration. A heritage terrace may require more attention to renovation controls. A retail premises needs a different review again, including the lease terms, permitted use, outgoings, make-good obligations, options and any personal guarantees.
The most useful due diligence is targeted. It connects the documents to your reason for buying. Tell your conveyancer what you intend to do with the property, whether that is moving in, renovating, leasing it out, operating a business or holding it for redevelopment. A restriction that is minor for one buyer may be a deal-breaker for another.
Do the work before exchange
A cooling-off period can provide some breathing room in many private treaty sales, but it is not a substitute for proper preparation. It may be waived, shortened or unavailable in some circumstances, including auctions. By the time you are under pressure to exchange, there may be limited opportunity to investigate properly or negotiate meaningful changes.
At Sarah Walsh Conveyancing & Leasing, we treat due diligence as part of protecting the investment behind the transaction, not as an administrative extra. Clear advice before exchange helps you decide whether to proceed, seek a price adjustment, request a contract amendment or walk away with confidence.
The right property is not necessarily the one with no issues. It is the one whose issues are understood, manageable and properly reflected in the decision you make before the contract becomes binding.