Property Due Diligence Checklist

What Is Property Due Diligence?

Due diligence is the process of verifying everything material about a property before you commit to purchasing it. In Australian property transactions, the buyer generally bears the risk of undiscovered defects — making due diligence your primary protection against expensive surprises post-settlement.

This guide explains the categories of due diligence and what belongs in each. For a printable checklist format, see our Property Due Diligence Checklist 2026.

Why Due Diligence Is the Buyer’s Responsibility

Australian property law generally operates on a caveat emptor (“buyer beware”) principle. Vendors are required to disclose known material defects and provide documents specified by legislation — but they’re not obligated to investigate defects they’re unaware of, or to volunteer information buyers haven’t asked about.

The practical implication: if you discover a structural defect or planning issue after settlement, your options are limited. The window for recourse is narrow, and litigation is expensive. Prevention — in the form of thorough due diligence — is categorically more effective.

The Four Categories of Due Diligence

1. Legal Due Diligence

Legal due diligence verifies that the vendor has clear title to sell and that you understand exactly what you’re buying.

Key checks: - Title search — confirms ownership, identifies encumbrances (mortgages, easements, caveats, restrictions on use) - Easements — rights of access across the land for utilities, drainage, or neighbouring properties. They don’t prevent purchase but affect what you can build - Vendor’s statement / Section 32 — in Victoria and some other states, vendors must provide a prescribed disclosure document. Review it carefully, preferably with a solicitor - Contract of sale review — conditions, settlement date, included and excluded chattels, any special conditions - Outstanding council orders — unpaid rates, notices to comply, orders to demolish unapproved structures

Your conveyancer or solicitor should conduct the legal due diligence. Don’t rely on your reading of the contract alone.

2. Physical Due Diligence

Physical due diligence assesses the condition of the structure and services.

Key checks: - Building inspection — structural integrity, roof condition, subfloor, drainage, evidence of movement or settlement - Pest inspection — termite activity, borer damage, timber decay - Plumbing and electrical — condition of services, any visible non-compliance - Strata records (for units and apartments) — body corporate meeting minutes, outstanding special levies, maintenance fund balance, pending major works

A combined building and pest inspection costs approximately $400–$700 and is one of the highest-return due diligence investments you can make. Don’t skip it on the basis that the property “looks fine.”

3. Planning and Zoning Due Diligence

Planning due diligence identifies the legal controls that apply to the land — controls that don’t appear in the listing and aren’t visible at inspection.

Key checks: - Planning overlays — flood, bushfire, heritage, vegetation, environmental significance, design and development overlays (see our Planning Overlays Guide) - Zoning classification — what is the land currently zoned, and what does that permit? - Council development plan — are there proposed changes to the area that affect your plans? - Unapproved structures — sheds, decks, carports, and extensions built without permits create liability for the new owner

In Victoria, you can access planning certificate data via VicPlan. Other states have equivalent portals. Intelliprop’s Property Report surfaces planning overlay data automatically.

4. Market Due Diligence

Market due diligence validates that you’re paying a reasonable price for what you’re getting, in the context of current market conditions.

Key checks: - Comparable sales — recently sold properties of similar type, size, and condition within 2km - Days on market — how long has this property been listed? Extended time on market warrants investigation - Price history — has the asking price been reduced? By how much? - Suburb market context — is the suburb in a period of rising or falling clearance rates? How does demand sit relative to supply?

Market due diligence doesn’t guarantee you won’t overpay — market conditions can shift after settlement. But it ensures your decision is informed by data, not by the vendor’s price expectations.

How to Sequence Your Due Diligence

Not all due diligence is worth doing on every property you’re interested in. A practical sequence:

1. Initial interest: Run a suburb analysis and check planning overlays before attending a second inspection. Intelliprop’s Property Report covers both.
2. Serious consideration: Request the vendor’s statement / Section 32. Commission a building and pest inspection. Conduct comparable sales analysis.
3. Pre-offer / pre-auction: Complete legal review with your conveyancer. Verify title. Understand settlement conditions.
4. Post-exchange: Your conveyancer manages the legal path to settlement.

Most buyers run some of these steps in parallel. The sequence matters less than ensuring everything is done before you’re contractually committed.

The Cost of Skipping Steps

The most common skipped step is the building inspection, usually rationalised as “the property looks fine” or “there’s no cooling-off period.” Both rationales are expensive.

A building inspection might cost $600 and reveal $40,000 in rectification work. That’s a $39,400 net saving — or at minimum, a negotiation lever. Post-settlement, that same information is your problem alone.

Thorough due diligence isn’t bureaucracy. It’s the mechanism by which you buy what you think you’re buying.

→ For a structured checklist format, see our Property Due Diligence Checklist 2026. → Run a Property Report to start your planning and market due diligence.