Commercial property due diligence is the structured investigation of an asset before you become unconditionally committed to buy. Check the lease and tenant, true net income, building condition, zoning and permitted use, title and strata records, environmental risks, valuation, finance and contract conditions. Use this checklist alongside a commercial solicitor, building consultant, registered valuer, accountant and finance broker. Australian requirements vary by state, property type and transaction structure, so professional advice matched to your specific asset is essential.
A commercial listing showing an attractive yield can look compelling on paper. But what happens if the lease expires in 12 months, the outgoings are not recoverable, the tenant's covenant is weaker than the brochure implies, or the building needs significant capital works before another tenant will commit?
Those questions are not edge cases. They are the reason commercial property due diligence exists as a discipline in its own right, distinct from the shorter checklist a residential investor typically runs.
For strategy-led property buying support, the process begins long before inspecting a property. It starts with your strategy, your finance position and a clear brief for what the asset must do inside your portfolio. Understanding commercial investment fundamentals for Australia before assessing a specific property puts every finding in the right context.
This checklist is designed as a decision system, not a pile of reports. Each section shows what to request, who should verify it, and how the finding affects your price, contract terms or exit.
This article explains Buyers Agency Australia's buyer-side property advisory approach. It is general information, not personal legal, tax, financial, valuation or SMSF advice.
What commercial property due diligence involves
Commercial property due diligence is the structured investigation of three things before exchange: the income-producing interest, the physical property and the legal right to use it. Once contracts exchange, the assumptions behind the purchase price become the buyer's risk. Due diligence is the work of testing those assumptions first.
Office, retail and industrial properties each carry different tenant, building and reletting dependencies. An industrial shed and a CBD office suite may both be described as leased commercial investments, but their lease structures, outgoings recoverability, permitted-use constraints, building specifications and tenant-replacement costs are rarely comparable. That is why the checklist cannot be collapsed into a single form.
The Australian Government's business guidance notes that a thorough pre-purchase investigation should cover financial records, legal documents, contracts, leases, licences and relevant liabilities. For commercial property specifically, the income stream, physical asset and title position each require separate, coordinated professional input. Commercial property buying support from a buyer-side adviser can help organise that assessment without replacing the legal, valuation or technical specialists who must sign off on each element.
Commercial property due diligence checklist at a glance
The table below maps the main workstreams. Documents and professionals vary by state, asset type, ownership structure and contract.
| Workstream | Documents to request | Verify with | Decision question |
|---|---|---|---|
| Lease and tenant | Executed lease, all variations, rent ledger, arrears records, guarantees | Commercial solicitor | Does the lease hold its value if the tenant leaves? |
| Income and outgoings | Rental statements, outgoings schedule, rates, insurance, land tax, strata | Accountant, solicitor | Is the net income accurate and owner-verified? |
| Building condition | Building inspection report, essential services records, maintenance log | Building consultant, engineer | What capital expenditure is foreseeable in the hold period? |
| Planning and zoning | Planning certificate, development approvals, council notices | Town planner, solicitor | Is current use permitted and can it be re-let on expiry? |
| Title and legal | Current title search, easements, covenants, encumbrances, strata records | Commercial solicitor | Are there restrictions on use, access, signage or redevelopment? |
| Valuation and finance | Independent valuation, comparable sales, lender approval | Registered valuer, finance broker | Does the price reflect lease quality, location and condition? |
| Environment and location | Flood and bushfire maps, contamination records, council search | Environmental consultant, solicitor | Are there hazards that affect insurance, finance or exit? |
| Contract and settlement | Contract of sale, GST advice, acquisition structure, settlement adjustments | Solicitor, accountant | Are conditions, timing and costs understood before exchange? |
What should you check first before buying commercial property in Australia?
The correct sequence matters. Assessing a specific property in depth before confirming finance capacity and portfolio fit wastes time and creates negotiation pressure you can avoid.
A practical sequence is:
- Confirm your written investment strategy, asset type preference and hold period.
- Obtain indicative finance approval from a commercial finance broker.
- Build a shortlist of properties that match the brief.
- Request the full document pack from the agent or vendor.
- Commission professional reviews: solicitor, building consultant, valuer, accountant.
- Reconcile findings, negotiate terms or conditions, and make an informed decision.
- Exchange with appropriate contract conditions and complete remaining checks before settlement.
Learning how to invest in commercial property before shortlisting specific assets reduces the risk of committing to due diligence costs on an asset that never suited your strategy.
1. Confirm the property meets your investment strategy
Before reviewing any lease document, ask whether the property fits your written acquisition brief.
- Asset type: office, retail or industrial, and does the building suit your target tenant profile?
- Location: state, city and precinct, and does it reflect your risk and liquidity preferences?
- Budget and equity: is the purchase price within your verified capacity, including acquisition costs?
- Borrowing capacity: has a commercial finance broker confirmed indicative approval for this asset type and tenancy?
- Target income: does the net yield, after outgoings, vacancy allowance and management, meet your income requirements?
- Risk tolerance: can you hold the asset through a vacancy, lease expiry or capital expenditure event?
- Hold period: does the lease term, building age and exit market align with your intended holding period?
- Portfolio role: does this property concentrate or diversify your exposure?
- Ownership structure: is the proposed entity, company, trust or SMSF appropriate for this asset? Seek qualified advice.
Book a free strategy session to clarify your commercial acquisition brief before beginning detailed assessment.
2. Review the commercial lease and tenant quality
The lease is the most important document in a commercial property purchase. The price is typically calculated on the income it represents, which means every gap, ambiguity or weakness in the lease is a gap in the investment case.
Request the full executed lease and every variation, side letter or deed of renewal. Do not rely on the tenancy schedule in an information memorandum alone. The solicitor must review the originals.
What to check in the executed lease:
- Lease term and commencement date
- Option periods and notice requirements
- Weighted average lease expiry (WALE) for multi-tenanted properties
- Rent review mechanism: fixed increase, CPI, market review or ratchet
- Rent-free incentives and whether they reduce effective rent below passing rent
- Outgoings: are they fully recoverable, partially recoverable or gross?
- Make-good obligations: who is responsible for reinstatement at expiry?
- Permitted use and whether it restricts the tenant pool on reletting
- Assignment and subletting rights
- Bank guarantee or personal guarantee amounts and terms
- Arrears history: request a current rent ledger, not just a statement of account
- Tenant covenant: financial information should be requested where available, not inferred from brand recognition or business age
The tenant-replacement question: If the current tenant vacated tomorrow, who could occupy the space and at what rental, incentive cost, downtime and leasing fee? That question is often more useful than the lease term itself.
A long WALE is not automatically reassuring if passing rent is above market, the permitted use is narrow, or the tenant covenant has not been verified. A commercial solicitor must assess the lease. Commercial acquisition and due diligence support from a buyer's agent can help organise the document pack and interpret findings, but does not replace legal review.
How do you know whether a commercial property yield is reliable?
Headline yield figures in commercial marketing materials are frequently gross, passing or unreconciled numbers. The calculation basis must always be stated before the figure is useful.
Key terms:
- Passing rent: the current contracted rent, before incentive adjustment
- Effective rent: passing rent adjusted for incentives such as rent-free periods or cash contributions
- Gross yield: annual income divided by purchase price, before outgoings
- Net yield: income minus owner-borne outgoings divided by purchase price
- Net operating income (NOI): total income minus all operating expenses, before debt service
A hypothetical example illustrates the gap. Assume a property is marketed at a 6% gross yield on passing rent of $120,000. If the lease includes non-recoverable outgoings of $25,000, a vacancy allowance of $8,000 and foreseeable capital expenditure averaging $7,000 per year, the NOI falls to approximately $80,000. The net yield and the investment case look materially different. These inputs must come from the actual lease, rent ledger, outgoings schedule, inspection report and qualified advice, not from the marketing document. Label any calculation as hypothetical unless you have verified asset documents.
3. Verify income, outgoings and operating expenses
Reconcile the information memorandum against the executed lease and independent records.
| Check | Evidence required |
|---|---|
| Passing rent | Executed lease and rent ledger |
| Arrears and payment history | Rent ledger, bank receipts where available |
| Recoverable outgoings | Lease outgoings clause, outgoings reconciliation |
| Non-recoverable outgoings | Lease, outgoings schedule, accountant review |
| Council rates | Rates notice |
| Land tax | State revenue authority advice, accountant |
| Insurance | Insurance schedule, lease obligations |
| Maintenance and repairs | Maintenance history, lease obligations, inspection report |
| Strata or owners corporation levies | Strata records, levy notices, sinking fund report |
| Property management fees | Management agreement |
| Leasing incentives or rent abatements | Lease, side letters, variations |
| Vacancy allowance | Leasing evidence, market data, building consultant advice |
| Capital expenditure reserves | Inspection report, maintenance history, lease obligations |
Not all commercial leases make outgoings fully recoverable. Check whether the lease imposes a cap on outgoings, whether some categories are owner-borne, and whether there is a reconciliation mechanism at year end. The difference between advertised gross income and verified net operating income is where most financial surprises arise.
4. Investigate the building and physical condition
An independent building inspection is not optional. The commercial property inspection checklist below covers the areas most likely to affect net yield and capital planning.
Structure and envelope:
- Structural integrity, columns, beams, mezzanines
- Roof condition, drainage and waterproofing
- Facade, cladding and glazing
- Subfloor and slab condition
Essential services and safety:
- Fire detection and suppression systems and compliance records
- Essential services maintenance contracts and inspection certificates
- Electrical switchboards and metering
- Gas, hydraulics and plumbing
- Accessibility compliance under the Disability Discrimination Act
- Asbestos register where relevant, particularly for older commercial buildings
Mechanical and fit-out:
- Air conditioning type, age, condition and service history
- Lifts and escalators: condition, service records, compliance certificates
- Fit-out ownership: is it the tenant's or the landlord's asset?
- Make-good obligations and likely reinstatement cost
Capital expenditure:
- What maintenance has been deferred?
- What plant is approaching end of life?
- Which costs fall to the owner under the lease or strata structure?
A building consultant must separate observed defects, probable risks and confirmed compliance status. Do not treat a building as compliant without a current report from a qualified professional.
5. Check zoning, planning and permitted use
Never infer permitted use from the fact that a tenant is currently operating. Current occupation does not prove that the use is permitted under the current planning scheme.
Zoning, overlays, heritage controls, development approvals and compliance notices must be checked against the relevant state or territory planning authority and local council records. Planning requirements differ across New South Wales, Victoria, Queensland, Western Australia, South Australia, Tasmania, the Australian Capital Territory and the Northern Territory, so the verification process is jurisdiction-specific.
In New South Wales, for example, a section 10.7 planning certificate from the relevant council can show zoning and planning controls applicable to the property, while a separate certificate may identify any outstanding notices or orders. The City of Sydney's planning certificate process illustrates one state-based approach. Other states and local councils have their own processes and certificate types.
The Australian Government's business location guidance also recommends checking zoning, permits, council information and future development activity as part of any location assessment.
Key questions to resolve:
- Is the current use a permitted use or a non-conforming use under the current planning scheme?
- If the tenant vacates, can the next tenant run the same or a comparable use?
- Are there overlays, heritage controls or road-widening reservations that restrict development or signage?
- Are there outstanding compliance notices or unapproved works?
- Are any infrastructure or rezoning proposals likely to affect access, parking or property value?
A town planner should be engaged for complex use questions or any development assessment.
6. Review title, strata and legal records
The current title search from the relevant state or territory land registry is the primary legal document. Do not rely on a listing, map or previous title copy as final evidence.
Freehold title checks:
- Confirm the lot and plan description matches the contract and physical property
- Review all registered easements, covenants, restrictions and caveats
- Identify any access rights, party-wall agreements or drainage obligations
- Check for road-widening or infrastructure reservations on or adjoining the title
- Confirm there are no encumbrances that restrict permitted use, signage, parking or redevelopment
Strata or owners corporation checks:
- Current by-laws and any amendments that restrict use or fit-out
- Minutes of recent owners corporation or strata committee meetings
- Current levy schedule and any arrears
- Sinking fund balance and 10-year forecast or equivalent
- Any proposed special levies or common property works
- Outstanding disputes involving the lot or the owners corporation
The Personal Property Securities Register records security interests in personal property. PPSR guidance relates to personal property security interests and is not a substitute for a land title search. Where a lease or security arrangement may be affected, legal advice is required.
7. Assess valuation, market evidence and finance
The asking price is not market value. An independent registered valuer assesses the property based on comparable sales, market rent, capitalisation rate and the specific characteristics of the lease and building. That assessment is essential for your own decision-making and is typically required by a lender before approving finance.
Key valuation and finance checks:
- Comparable sales: recent transactions of similar assets adjusted for lease quality, location, building age and condition
- Market rent: current leasing evidence for comparable space, which may differ from passing rent
- Capitalisation rate: the yield implied by the price relative to net operating income, stated as passing, effective or stabilised
- Lender appetite: some lenders apply different policies for short-lease assets, single-tenant properties, specific asset classes or rural locations
- Loan-to-value ratio: commercial lenders generally apply more conservative LVRs than residential lenders, and requirements vary by lender, asset type and tenant profile
- Serviceability: model the income and interest cost at the time of purchase and after potential vacancy or rate movement
- Ownership structure: confirm that the proposed entity, whether individual, company, trust or SMSF, is acceptable to the lender and appropriate for the tax and legal structure
- Downside scenario: test vacancy, elevated interest costs and a capital expenditure requirement occurring in the same holding period, not each risk in isolation
For detailed guidance on lender requirements, commercial LVRs and serviceability, review commercial property finance considerations before finalising your acquisition structure.
Australia's commercial property transactions reached $87.82 billion in the 2025/26 financial year, a 25.7% increase on the prior year, according to Ray White Group research (July 2026). That activity level reinforces the importance of independent valuation in a competitive acquisition environment.
8. Identify environmental and location risks
Location risk affects tenant demand, insurance premiums, lender appetite, vacancy duration and exit liquidity. Office, retail and industrial properties have different access, visibility, loading, parking and configuration requirements, so the risk assessment should reflect the asset class.
Environmental hazards:
- Flood risk: check government flood maps and council records for the specific lot
- Bushfire exposure: check relevant state planning zone and overlay maps
- Contamination: for industrial sites or properties with historical industrial use, an environmental consultant should assess whether a Phase 1 or Phase 2 environmental site assessment is warranted
- Date all hazard assessments. Do not rely on undated general area information.
Location and market factors:
- Traffic access, loading access, public transport and parking for the tenant type
- Competing supply: is new office, retail or industrial space under construction or approved nearby?
- Local tenant demand: what businesses are seeking space in this precinct and at what rental?
- Neighbouring uses: do adjacent properties support or undermine the tenant mix?
- Infrastructure: planned road works, rail corridors or rezoning that could improve or disrupt access
Link location risk to the tenant-replacement question. An industrial property with restricted truck access or an office building in a precinct losing business tenants to a competing suburb both carry higher reletting risk than the current lease term suggests.
9. Use a pre-purchase risk and decision framework
Every finding from your due diligence should be classified into one of three categories before you decide to proceed, negotiate or exit.
Acceptable: The issue is understood, quantified, budgeted and within your stated risk tolerance. No price or contract adjustment is required. Example: minor cosmetic defects with a clear cost estimate that is below your contingency budget.
Negotiable: The issue materially affects value, timing or risk, but it can be addressed through a price reduction, a vendor warranty, a contractual condition or a delayed settlement to allow resolution. Example: deferred maintenance with a credible cost estimate that the vendor agrees to discount or rectify.
Deal-breaking: The issue undermines the legal right to use the property, the durability of income, the availability of finance, or your ability to exit. Example: a non-conforming use that would prevent a replacement tenant, an unverifiable income claim, or a compliance notice that the vendor cannot resolve before settlement.
Use professional advice matched to the issue type:
- Solicitor: contract, lease, title, strata, compliance, planning and legal risk
- Registered valuer: price, income, capitalisation rate and market evidence
- Building consultant: physical condition, capital expenditure, defects and services
- Accountant and tax adviser: outgoings, land tax, GST, acquisition structure and SMSF eligibility
- Finance broker: lender appetite, LVR, serviceability and refinancing risk
- Town planner: zoning, permitted use, development approvals and overlays
- Environmental consultant: contamination, hazard assessment and remediation cost
Dragan Dimovski, a property expert with more than 20 years of experience, leads the team at Buyers Agency Australia, which provides commercial acquisition and due diligence support across sourcing, assessment coordination, negotiation and settlement. A buyer's agent does not replace your solicitor, valuer, accountant or finance broker, but can help coordinate findings and connect them to the acquisition decision.
For residential investors making their first commercial acquisition, investment property buyer-side support can also help bridge the gap between residential and commercial due diligence expectations.
When should you walk away from a commercial property deal?
Walking away is appropriate when a material risk cannot be quantified, funded, insured, legally resolved or accepted within your strategy. The right decision depends on your circumstances and professional advice, not on a universal rule.
Consider pausing or exiting when:
- Income cannot be independently verified against the executed lease and rent ledger
- The current use is non-conforming and reletting would require council approval or building works
- A title restriction, caveat or encumbrance materially limits use, access or development potential
- The tenant covenant cannot be assessed because financial information is unavailable
- Capital expenditure requirements identified in the inspection report are unaffordable within your hold budget
- Lender appetite is unavailable or the LVR position leaves insufficient cash buffer for vacancy or capex
- Reliable evidence for any material claim cannot be obtained before exchange
The inability to obtain evidence is itself a risk. If the vendor cannot or will not produce the executed lease, rent ledger, maintenance records or planning history, that refusal is a finding, not a gap to overlook.
Commercial property due diligence red flags
| Red flag | What it may indicate | Evidence to request | Possible response |
|---|---|---|---|
| Lease expiry within 12 to 18 months | High reletting risk and potential vacancy | Executed lease, leasing evidence, tenant renewal intention | Renegotiate price or seek a vendor lease guarantee |
| Tenant in arrears | Covenant weakness or cashflow stress | Current rent ledger, arrears history, bank guarantee | Request guarantee top-up or price reduction |
| Passing rent above market | Rent at risk on market review or reletting | Current leasing evidence, independent rent assessment | Model income at market rent before pricing the asset |
| Missing lease variations or side letters | Undisclosed incentives or terms reducing effective rent | Full executed document set, solicitor review | Require full disclosure as a contract condition |
| Non-recoverable outgoings not disclosed | Net income lower than advertised | Outgoings schedule, lease, rates and insurance documents | Recalculate NOI on owner-borne cost basis |
| Deferred maintenance or aged plant | Near-term capital expenditure risk | Independent building inspection, maintenance log | Quantify cost and adjust price or negotiate a vendor contribution |
| Outstanding compliance notices | Potential liability at settlement | Council records, planning certificate, solicitor search | Require resolution as a condition of exchange |
| Unusual or compressed contract conditions | Vendor seeking to limit due diligence | Solicitor review of contract | Allow adequate time; do not exchange under undue pressure |
Final checklist before making an offer
Before making an offer:
- Written investment strategy confirmed
- Indicative finance approval obtained from a commercial finance broker
- Asset type, location and tenancy profile consistent with acquisition brief
- Executed lease and key documents reviewed at a preliminary level
- Building inspection and zoning pre-checks completed or scheduled
Before exchange:
- Full executed lease and all variations reviewed by a commercial solicitor
- Rent ledger, arrears and outgoings reconciliation verified
- Independent building inspection and essential services report received
- Current title search, strata records and legal checks completed by solicitor
- Planning certificate and zoning confirmation obtained for the relevant state
- Independent valuation received and reviewed
- Finance approval confirmed for the specific asset, tenancy and structure
- GST treatment and acquisition structure reviewed by accountant and solicitor; the ATO's GST ruling on going concern treatment confirms that GST treatment depends on the specific transaction facts
- Contract conditions, deposit exposure and due diligence period agreed
Before settlement:
- Settlement adjustments for rent, outgoings and rates confirmed with solicitor
- Lease documents, keys and access arrangements confirmed
- Rent position and tenant status checked as at settlement date
- Insurance arranged and effective from settlement
- Post-settlement cash reserve confirmed for vacancy, capital expenditure and holding costs
Planning, strata, retail tenancy legislation, land tax and contract disclosure rules vary across New South Wales, Victoria, Queensland, Western Australia, South Australia, Tasmania, the Australian Capital Territory and the Northern Territory. Always verify jurisdiction-specific requirements with the relevant professional.
Commercial property due diligence FAQs
What is commercial property due diligence?
Commercial property due diligence is the structured investigation of an asset's legal, financial, planning and physical position before contracts exchange, to verify that the income, use and title assumptions support the purchase price.
What should I check before buying commercial property in Australia?
Check the executed lease and tenant quality, verified net income and outgoings, building condition, zoning and permitted use, title and strata records, independent valuation, finance capacity and contract conditions, with professional advice on each.
What should I check in a commercial lease before buying?
Review the term, options, WALE, rent review mechanism, incentives, recoverable outgoings, permitted use, make-good obligations, bank guarantee, arrears history and whether passing rent reflects the current market.
How do I verify commercial property rental income?
Request the executed lease, current rent ledger, bank statements or rental statements where available, outgoings reconciliation and arrears history. Reconcile against an independent accountant or valuer review before treating any income figure as confirmed.
Is a higher commercial property yield always better?
No. A higher headline yield may reflect short lease expiry, weak tenant covenant, above-market rent at risk on review, high non-recoverable outgoings or deferred capital expenditure that reduces the sustainable net income significantly.
Do I need a solicitor for commercial property due diligence?
Yes. A commercial solicitor must review the contract, lease, title, strata records and any compliance or planning issues. Other specialists cover building, valuation, finance and tax. No single professional covers all areas.
What planning checks are needed for commercial property?
Confirm current zoning, whether the existing use is a permitted use, any development approvals, overlays, heritage controls, compliance notices and future planning proposals through the relevant state planning authority and local council.
What professionals should review a commercial property purchase?
The core team is a commercial solicitor, registered valuer, independent building consultant, accountant, finance broker and, where relevant, a town planner and environmental consultant.
Can an SMSF buy commercial property?
An SMSF may be able to acquire commercial property in some circumstances, subject to the business real property definition and Superannuation Industry (Supervision) Act requirements. The ATO's SMSF guidance clarifies the relevant rules. An SMSF specialist and licensed adviser must be consulted before proceeding, as eligibility is not automatic.
When should I walk away from a commercial property deal?
Consider walking away when income cannot be independently verified, the current use is non-conforming, a material title restriction cannot be resolved, capital expenditure is unaffordable, or reliable evidence for a key claim cannot be obtained before exchange.
Make the next commercial property decision with evidence
The most important principle in commercial property due diligence is the order: strategy first, evidence second, acquisition third. An asset that looks attractive without those gates is a risk position, not an investment.
Buyers Agency Australia, led by Dragan Dimovski, supports commercial investors across sourcing, assessment coordination, negotiation and settlement for office, retail and industrial acquisitions nationally. The service coordinates the due diligence process without replacing the legal, valuation, building or tax professionals who must verify each element.
When this is not the right fit: Buyers Agency Australia's commercial property buying service may not be the appropriate starting point if you are seeking legal, tax, SMSF specialist, valuation or lending advice from a buyer's agent. If you are not prepared for the possibility of vacancy, lease expiry, capital expenditure or refinancing during the hold period, seeking independent financial and legal advice before engaging any advisory service is the right first step.
For broader portfolio context and national property investment guidance, the Buyers Agency Australia team works with investors across Australia building or expanding property portfolios.
Ready to assess a commercial acquisition with the right framework? Map out your next property move in a free strategy session and bring your shortlist, finance position and acquisition brief to the conversation.
For direct enquiries about a specific commercial brief, contact the Buyers Agency Australia team to discuss your requirements.
