Commercial Property Due Diligence Framework: How to Run the Process

Most buyers know what to check on a commercial property. Where they come unstuck is running the checks: reports arrive late, findings sit in separate documents, and the contract deadline arrives before anyone has added up what it all means. A commercial property due diligence framework fixes that. It connects the contract, the tenant, the building, the income and the local market so you can spot problems while there is still time to act. Our guide to commercial property due diligence covers what to check. In this article, we’ll cover how to run the process, in six stages, from setting your criteria to recording a decision you can stand behind.

1. Set Your Buying Criteria and Investigation Plan

Start with your budget, intended use, income requirements and how much vacancy or repair you could fund. Decide in advance which findings would rule the property out, before enthusiasm for the deal takes over.

Then set up one investigation register. For each question, record the evidence you need, the adviser responsible, the deadline and the outcome. Mark each item as verified, unresolved or unacceptable, and keep the supporting documents with it.

Keep the original listing beside the verified evidence. When a claim turns out to be different, update your financial model and note why, rather than quietly replacing the assumption.

Ask your solicitor to review the proposed contract before you sign, including the investigation conditions, access arrangements, notice requirements and deadlines. Book every report against those dates rather than assuming some checks can wait.

Then read what you sign. MobbsMarr Legal’s write-up of a 2026 Queensland case shows a seller held to a contract price they had not noticed before signing. Have your solicitor confirm that every protection you negotiated actually appears in the final document.

2. Verify the Title and Lawful Use

Have your solicitor examine ownership, easements, covenants, access rights and other restrictions on title. Then compare the legal boundaries with the premises, parking and loading areas you were shown on site.

Ask a town planner or the council about the intended use, the overlays and the approvals for existing improvements. A trading business, a mezzanine or a second tenancy does not prove that every use or alteration is approved.

For a strata property, add the minutes, financial statements, insurance, maintenance plans and proposed levies to the register, and confirm who is responsible for shared roofs, driveways and services before you estimate your costs.

3. Test the Tenant and the Lease

Match the tenant’s legal entity to the signed lease, variations, guarantees and rent ledger. Review the payment history and ask, through the proper channels, for financial information that suits the size of the deal.

Read the expiry date, renewal options, rent reviews, incentives, break rights, assignment provisions, repairs and make-good obligations. Keep a clear line between what the lease actually says and what the sales material implies.

Check fit-out arrangements too. Our article on commercial lease negotiations explains how fit-out funding can sit with the tenant, the landlord or both. Confirm which applies here and whether the owner has any commitments still outstanding.

4. Complete the Commercial Property Inspection

Engage an inspector who knows the asset type and agree the scope in writing. Ask which areas they could not reach, which systems need a specialist, and what the report excludes. Our due diligence guide lists the building items to prioritise.

Refer any suspected contamination, asbestos, structural defects or approval gaps to the right specialist, because a visual inspection cannot resolve every hidden issue. For each material finding, get a cost estimate and a realistic timeframe for the repair, and add both to the register.

5. Rebuild the Income and Funding Assumptions

Reconcile the rent with the lease and the ledger, then identify the expenses you cannot recover. Include insurance, management, maintenance, strata contributions and any other owner costs that apply.

Allow separately for acquisition costs, finance, tax, vacancy, incentives and capital expenditure. Ask your accountant and solicitor to confirm the GST treatment of the sale rather than assuming an existing tenancy settles it.

An independent valuation helps you test the price against market evidence, but be clear about its purpose and limits before you rely on it. Our article on how much commercial property valuations cost covers the basics. Opteon’s article on valuing unusual properties shows, through a caravan park on a short lease, how short tenure, capital expenditure and flood exposure all feed into a valuation. Check that any comparable sales share your property’s risks before you treat them as a benchmark.

Then run a downside scenario that combines a vacancy, a lower replacement rent, higher borrowing costs and an urgent repair. Record the cash you would need and compare it with your reserves.

A Worked Example

Take a warehouse with a leaking roof and a lease close to expiry. The roof quote on its own does not tell you much. The repair may disrupt the tenant, the tenant may decide to leave, and a new tenant may ask for incentives. Put all three effects into the cash forecast, then ask whether the price still compensates you for the risk. That is the step that turns separate reports into an investment decision.

6. Resolve the Findings and Record Your Decision

A good commercial property due diligence framework ends with a decision record. For each material issue, note the evidence, the likely cost, your response and what remains uncertain. Then write down why you are proceeding, or why you are not.

Before you finalise it, compare local rents, incentives, competing supply and the likely replacement tenants. Our article on maximising commercial real estate returns helps you look beyond the advertised yield.

The most common commercial real estate pitfalls at this stage are accepting verbal assurances, treating missing records as harmless, and overlooking repair costs because the rent looks good. For every open issue, decide what must change in the price or the contract, what needs more investigation, and what would make you walk away.

A buyer’s agent such as Revolve Commercial can run this process for you, from the register to the negotiation. If you would like help with a property you are assessing, book a call with our team.

Frequently Asked Questions

How Much Does Commercial Due Diligence Cost?

There is no standard fee. Ask for itemised quotes for legal searches, inspections, specialist reports and advice, and allow for follow-up investigations if the first findings call for them.

Is Due Diligence Different for a Vacant Property?

Yes. There is no rent to verify, so the leasing prospects, fit-out requirements, holding costs and time needed to find a tenant matter much more.

Can You Investigate a Property Before Auction?

Yes, and you need to. Start your investigations early and get legal advice on the auction terms before you bid. Do not assume you can add investigation conditions once you are the successful bidder.

What If the Seller Restricts Access to Tenant Information?

Ask whether a confidentiality agreement or adviser-only access would resolve it. Record what you still cannot see, and weigh how much that limits your confidence in the purchase.

Should Due Diligence Continue After Settlement?

Keep the records and revisit them when leases change, works are proposed or new risks appear. Decisions during ownership are better made on current evidence than on the original purchase assumptions.

Conclusion

Due diligence fails most often in the gaps between reports. A simple framework closes them: set your criteria, keep one register, test the lease and building against the contract dates, rebuild the income, and record a decision before the contract goes unconditional.

Need Help Running Due Diligence on a Commercial Property?

Keeping a solicitor, inspector, valuer and accountant moving against one deadline is hard work, especially on your first purchase. At Revolve Commercial, we coordinate the checks, weigh the findings and negotiate on what they show.

If you would like to talk through a property you are considering, book a free call with an experienced commercial buyer agent at Revolve Commercial today.

Disclaimer: This article provides general information only and does not constitute financial, legal or tax advice. Obtain independent advice suited to your circumstances before acting.