Property due diligence checklist (Australia, 2026)

Short answer: property due diligence is the set of checks you run on a property before you are contractually committed — across seven areas: title and ownership, planning and what you can build, hazard and environmental risk (flood, bushfire, contamination), heritage, the building itself, strata (for units), and the contract, finance and holding costs. Most of it is public record and can be checked before you ever make an offer. In one survey of Australian conveyancing professionals, 26% of buyers hit a post-purchase problem they could have caught with better due diligence — this checklist is how you avoid being in that group.

This is the master checklist. Each section links to a deeper guide, and where a step is public-record (planning, hazards, heritage, the suburb), you can front-load it in about 60 seconds with a SafeBuy report before you spend a cent on inspections.

Do it before you offer, not after

The single most important thing about due diligence is timing. Cooling-off periods in Australia are short, and at auction there is none at all:

• NSW — 5 business days cooling-off (private treaty); waived at auction.
• VIC — 3 business days cooling-off; none at auction or within 3 clear business days of a public auction.
• QLD — 5 business days cooling-off (private treaty); waived at auction.

Once the hammer falls or you sign an unconditional contract, most of these checks can no longer save you — they can only tell you how much trouble you are already in. Every public-record check below should be done before you make an offer. The physical and legal steps (building inspection, conveyancer's searches) then happen during the contract or cooling-off window.

1. Title and ownership

Confirm who owns it, and everything that "runs with the land".

• Order a title search — confirms the registered owner and lot/plan.
• Check for encumbrances: mortgages, caveats, and covenants that restrict what you can do.
• Identify any easements — drainage, sewer, access or utility rights that cross the lot and limit where you can build.
• Confirm boundaries and lot dimensions match the plan (survey if uncertain).

Easements are the quiet deal-breaker most buyers miss — a drainage easement can sterilise a chunk of the block. Read our guide to easements and restrictions on title before you assume the backyard is yours to build on.

2. Planning — what you can actually build

Zoning decides what the property can legally be used for and built into. This is where upside and downside both live.

• Confirm the zone and the permitted uses (with consent, without consent, and prohibited).
• Check the development standards — height, floor space ratio (FSR), setbacks, minimum lot size.
• If you plan to develop, test the subdivision or dual-occupancy potential against the minimum lot size.
• Note any planning overlays that add controls on top of the zone.

Start with what you can build with and without consent, and if you are eyeing a split, run the four tests for subdivision potential first. SafeBuy resolves the zone, permitted uses and numerical controls for the exact lot automatically — no LEP or planning-scheme reading required.

3. Hazard and environmental risk

This is the layer that costs buyers the most and shows up on no floor plan. It is also the layer SafeBuy was built for.

• Flood — is the lot flood-prone, and at what level? Check the flood overlay and the AEP / floor-level detail, because the overlay is only the visible tip of three regulatory layers.
• Bushfire — is it bushfire-prone, and at what BAL rating? BAL-29 adds tens of thousands to a build; BAL-FZ can rule out a conventional slab.
• Contamination — former service stations, dry cleaners and industrial use trigger Phase 1/Phase 2 contamination checks.
• Acid sulfate soils — common on coastal and low-lying land; they raise construction cost and constrain excavation.
• Landslip / slope — steep or unstable land carries geotech cost and building risk.

These are the five hazard overlays buyers miss most. Every one is public data — a SafeBuy report surfaces all of them for the address in seconds, so you can walk away before you pay for a building and pest inspection on a block you were never going to buy.

4. Heritage

Heritage protection can quietly remove your right to demolish, extend or even repaint.

• Check for individual heritage listing vs a heritage conservation area / precinct — the difference matters enormously for what you can change.
• Understand which tier of heritage listing applies (local, state, or federal/EPBC).
• Look for character-area controls, which bite even without a formal heritage listing.

5. The building itself

Once the public record checks out, verify the physical asset.

• Commission an independent building and pest inspection (~$400–700).
• For anything structural or development-related, know when you need a building consultant, town planner or structural engineer.
• Budget for defects the vendor's styling is hiding — movement cracks, drainage, roof, subfloor moisture.

6. Strata and body corporate (units, townhouses, apartments)

If it is strata title, you are buying into a shared balance sheet.

• Order a strata report / records inspection.
• Check the sinking (capital works) fund balance — and what "good" looks like.
• Read the minutes for special levies, disputes, defects and by-laws.
• Understand how strata differs from Torrens title operationally.

7. Contract, finance and holding costs

The legal and financial layer — where a conveyancer or solicitor earns their fee.

• Get the vendor's disclosure document reviewed: the Section 32 Vendor's Statement in Victoria, or the Section 10.7 Planning Certificate in NSW (how to read a 10.7 in five minutes).
• Have the contract of sale clauses that actually matter reviewed before you sign.
• Model the transaction costs: stamp duty by state, and whether paying LMI is actually the smarter move.
• Confirm finance, rates, land tax and insurance (flood/bushfire premiums can be several thousand a year on high-risk land).

8. Neighbourhood and value

Finally, pressure-test the price and the location.

• Check comparable sales — and know why the suburb median can lie to you.
• Assess schools (catchment effect on price), transport, amenity and demographics.
• Look at walkability and the local business mix as leading indicators of where the area is heading.

SafeBuy's suburb and neighbourhood layers cover comparable sales, school catchments, demographics and amenity for the address, so this step takes minutes rather than a weekend of tab-hopping.

State-by-state quick reference

Always confirm the current position with your conveyancer or solicitor — disclosure regimes change.

What it costs and how long it takes

On a $600,000+ purchase, that is a rounding error against the cost of getting it wrong.

The fast track: what you can check yourself in minutes

Areas 2, 3, 4 and 8 above — planning, hazards, heritage and the suburb — are all public record. Traditionally that meant reading an LEP or planning scheme, cross-referencing council overlay maps, and pulling ABS suburb data by hand. SafeBuy compresses all of it into a single address search, so you can do the single most valuable 60-second due diligence move before you book an inspection or engage a conveyancer.

To be clear about scope: SafeBuy front-loads the public-record checks so you can vet — and reject — properties fast. It does not replace your building inspector or your conveyancer; it makes sure you only pay them for properties worth pursuing. That is why due diligence matters more than timing the market.

Common questions

When should I do property due diligence?

Before you make an offer. The public-record checks (title, planning, hazards, heritage, suburb) can all be done first; the physical inspection and legal searches happen during the contract or cooling-off window.

Can I do due diligence before making an offer?

Yes — and you should. Everything in areas 1–4 and 8 is available without the vendor's cooperation. Doing it first is how you avoid wasting money on inspections for properties you would never have bought.

What if I'm buying at auction?

There is no cooling-off period at auction, so all of your due diligence — including the building inspection and contract review — must be finished before you raise your hand.

Is a building and pest inspection enough?

No. A building inspection covers the structure only. It tells you nothing about flood or bushfire risk, zoning, heritage, easements or the contract — which is where most avoidable problems actually come from.

Related reading

• What to check before buying a house in Australia — the pre-offer action version of this checklist.
• Investment property: ten checks before you make an offer
• The next-generation buyer's checklist
• Glossary of property and planning terminology

This guide is general information, not legal, financial or planning advice. Property law and disclosure requirements differ by state and change over time — always confirm your specific situation with a licensed conveyancer or solicitor before you act.