Environmental due diligence on a property acquisition is how you find out whether contamination, UPSS liability, approval constraints or regulator history could affect price, settlement or what you do with the site after you own it. In Australia that usually starts with a desktop review of site history and registers, then a preliminary site investigation (PSI) if the history warrants it.
Who instructs acquisition due diligence
Three groups instruct this work most often, and each needs something slightly different from the report:
- Law firms need independence, clear reliance language and advice that can sit behind SPA conditions, lease schedules or disclosure obligations.
- Property and facility managers need portfolio-level clarity on lease handover, UPSS baseline, tenant change and capital works risk on industrial, retail and logistics assets.
- Acquirers, investors and developers need fast red-flag advice before exclusivity or board approval, with a proportionate path to further DSI sampling if required.
What a desktop acquisition review covers
A desktop Phase 1-style review typically includes:
- historical aerial photographs and site use mapping
- state contaminated land and environmental management registers
- planning and zoning constraints relevant to contamination
- review of any vendor reports or prior investigation data
- a conceptual site model and recommendation on whether intrusive work is needed
For many industrial, warehouse and infill sites, a well-scoped desktop review completed in 3-5 business days is enough to decide whether to proceed, renegotiate, or commission a PSI before settlement.
When you need a PSI before settlement
A PSI adds a site walkover and refines the conceptual site model. It is commonly warranted where the site history includes petrol stations, dry cleaning, metalworking, landfilling, asbestos demolition, or imported fill. Councils often expect a PSI for sensitive-use development applications; acquirers often want the same work before settlement when the vendor cannot provide a current report.
iEnvi scopes PSI work with a fixed-fee proposal where possible and states clearly whether DSI sampling is likely and what it would cost.
Industrial, logistics and commercial property
Acquisition teams often underestimate legacy uses on second-generation industrial and logistics sites. Common issues include petroleum infrastructure, solvent storage, waste stockpiling and asbestos in fill. UPSS and lease baseline assessment is frequently relevant on service station and fuel-handling properties managed by facility teams.
Vendor report review
Buy-side review of a vendor environmental report is a distinct task from starting fresh. A senior practitioner can identify whether sampling was sufficient, whether the conceptual site model is defensible, and whether the report supports the land use you are actually acquiring. That review is often instructed by a law firm or acquirer during exclusivity.
What to send us to scope the work
- certificate of title and site address
- proposed land use and transaction timing
- any vendor reports or prior PSI/DSI
- known underground storage, industrial plant or filling history
- who needs to rely on the report (law firm, lender, board, council)
Contact iEnvi for a scoped acquisition review or environmental due diligence on your transaction.
Need advice on this issue? iEnvi provides practical, senior-led environmental consulting across contaminated land, remediation, ecology and environmental risk.
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