Expert answer

Does a business that owns its land need an environmental assessment?

A business that owns its real estate carries an environmental exposure a tenant does not, because contamination liability under provincial environmental law generally attaches to the current owner of land regardless of who caused it. A buyer’s lender will often require at least a Phase I environmental assessment before financing against that property, whatever the operating history looks like.

Reviewed

Leasing versus owning the ground a business sits on is a real distinction here, not a technicality. When a business owns the dirt itself, the environmental question becomes a real property question with its own liability, separate from anything a lease could ever create.

Ownership carries liability leasing usually avoids

A tenant’s environmental exposure is generally tied to what happened during their own tenancy. An owner can be on the hook for contamination that predates their ownership entirely, because provincial legislation commonly ties liability to the land itself and its current registered owner rather than only to whoever originally caused the problem.

Why the seller may want to commission the assessment first

Waiting for a buyer’s lender to require a Phase I late in the process risks surfacing a problem after a deal is already priced and under a tight closing timeline. A seller who commissions an assessment proactively, before listing, controls the timing and can address or disclose findings on their own terms rather than the buyer’s.

A clean Phase I doesn’t end the conversation

If a Phase I identifies a potential concern — a historical dry-cleaning operation, fuel handling, an old underground tank — it typically leads to a Phase II involving actual sampling, which takes longer and costs more. A seller should expect this possibility for any site with an industrial or fuel-handling history, regardless of what currently operates there.

Contamination found doesn’t have to kill the deal

It usually changes the deal instead, through a price adjustment, an escrow holdback pending remediation, or a seller indemnity that survives closing specifically for environmental matters. Structuring around a known issue is common, and generally a better outcome for both sides than a deal collapsing once a Phase I result is disclosed.

Sources

This answer is checked against primary sources. Links were last confirmed on the dates shown.

  1. 01
    Canada Revenue AgencyGovernment
    Selling a business
    canada.ca·Checked Aug 14, 2026
  2. 02
    Treadstone LawLegal commentary
    Environmental Liabilities to Check Before Buying a Business in Ontario
    treadstonelaw.ca·Checked Aug 14, 2026
  3. 03
    Treadstone LawLegal commentary
    Environmental Liability in an Ontario Asset Purchase vs Share Purchase
    treadstonelaw.ca·Checked Aug 14, 2026
  4. 04
    Business Development Bank of CanadaIndustry
    How to sell your business
    bdc.ca·Checked Aug 14, 2026

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