Environmental risk can be one of the most consequential issues in a commercial real estate transaction because the condition visible above ground does not necessarily tell the buyer what has occurred on, beneath or around the property over many years of use.
A modern warehouse may occupy land that was once used for manufacturing. An automotive property may have experienced decades of fuel, oil or chemical handling. A redevelopment site may contain underground infrastructure remaining from a previous use, while contamination originating from a neighbouring property may migrate through soil or groundwater onto land that has never supported an environmentally sensitive operation of its own.
For a commercial purchaser, environmental due diligence is therefore about much more than determining whether the property looks clean.
The buyer needs to understand the history of the property, identify circumstances that could create environmental liability, determine whether additional investigation is warranted and understand how any findings could affect the proposed use, financing, insurance, redevelopment potential, value and eventual resale of the asset.
Environmental due diligence should consequently be viewed as part of the commercial acquisition decision rather than simply another report required before closing.
Why Environmental History Matters
Commercial properties can have long and complicated histories. Buildings change occupants, businesses close, operations expand and land is redeveloped. A use that was considered ordinary several decades ago may have involved storage, handling or disposal practices that would be managed very differently today.
Industrial properties naturally receive considerable attention because manufacturing, metal fabrication, fuel storage and other operations may involve substances capable of affecting soil or groundwater. Automotive repair facilities, service stations, dry cleaners and some printing or manufacturing operations can also warrant closer environmental investigation because of the materials historically associated with those uses.
However, environmental risk should not be determined solely from the current business operating at the property.
A retail building may occupy a former service station. An office development may have been constructed on former industrial land. A warehouse may have replaced an earlier manufacturing facility. Vacant land may have been filled or used for activities that are no longer apparent.
The history of the site can therefore be as important as its present condition.
This is one of the reasons environmental due diligence often begins by looking backward before attempting to determine what risk exists today.
Environmental Risk Is Not Limited to Industrial Property
Although industrial properties often receive the greatest environmental scrutiny, environmental concerns can affect almost every category of commercial real estate.
Retail plazas, office buildings, apartment buildings, mixed-use properties and institutional buildings may contain asbestos, mould, lead-containing materials, older fuel systems or other building-related environmental concerns. Vacant land may have historical uses that are not evident from its current appearance, while redevelopment properties can contain buried infrastructure or fill from previous construction.
The appropriate level of investigation should therefore reflect the property rather than its label.
A relatively new office building constructed on previously undeveloped land may present a very different environmental profile from an older office building located on a former industrial site. Similarly, two warehouses that appear nearly identical today may carry very different environmental histories depending upon what occurred on the land before the current buildings were constructed.
The buyer should therefore consider the property’s age, historical uses, surrounding land uses and intended future operation when deciding what environmental investigation is appropriate.
A Phase I Environmental Site Assessment Is Usually About Identifying Questions
One of the most common environmental investigations in a commercial acquisition is the Phase I Environmental Site Assessment, generally referred to as a Phase I ESA.
A Phase I is primarily an investigative and historical exercise. Depending upon the applicable standard and circumstances, the environmental consultant may review historical records, aerial photographs, environmental databases, previous reports and other information while also inspecting the property and considering surrounding land uses.
The purpose is not necessarily to prove that contamination exists.
Instead, the assessment attempts to identify actual or potential environmental concerns that may justify additional investigation.
That distinction is important for buyers because a Phase I should not be treated simply as a document that either “passes” or “fails” the property. The report may identify historical activities, neighbouring uses or physical observations that require interpretation. Some findings may be relatively minor, while others may suggest that additional investigation is necessary before the environmental condition of the property can be understood with reasonable confidence.
A useful Phase I therefore helps the buyer decide what questions remain rather than pretending that every question has already been answered.
A Phase II Moves From History Toward Physical Evidence
When the Phase I identifies environmental concerns requiring further investigation, a Phase II Environmental Site Assessment may be recommended.
Unlike the largely historical and observational work of a Phase I, a Phase II generally involves physical investigation. Depending upon the concern, this may include soil sampling, groundwater monitoring, laboratory analysis, drilling or other subsurface work designed to determine whether contamination is actually present and, where possible, provide information about its nature and extent.
This is an important transition in the due diligence process.
The Phase I may establish that a former dry-cleaning operation existed at the property. The Phase II begins investigating whether that historical activity actually affected soil or groundwater. Similarly, records may show that underground fuel tanks once existed, but physical investigation may be required to determine whether petroleum contamination remains.
The buyer is progressively moving from possibility toward evidence.
That evidence can materially change the transaction because the issue is no longer simply whether something might have happened historically. The buyer may now need to understand the extent of contamination, whether remediation or monitoring will be required and how those findings affect the economics and intended use of the property.
Contamination Can Come From Outside the Property
One of the less intuitive aspects of environmental risk is that the property itself does not necessarily need to have hosted an environmentally sensitive activity for contamination to become relevant.
Soil and groundwater conditions do not respect property boundaries.
A neighbouring service station, dry cleaner, industrial operation or other historical use may potentially affect surrounding properties depending upon the contaminants involved, subsurface conditions and groundwater movement.
That makes surrounding land-use history important during environmental assessment.
A purchaser evaluating a seemingly low-risk commercial building may therefore encounter environmental concerns originating from a property that the buyer does not own and cannot directly control.
This is another reason visual inspection alone is insufficient. The property may appear exceptionally well maintained while the environmental question exists entirely beneath the surface.
Environmental Liability Can Become a Financial Liability
Environmental concerns matter because they can translate into substantial financial obligations.
Where contamination is identified, the response may involve soil removal, groundwater treatment, monitoring, building remediation, environmental consulting, regulatory work or restrictions affecting how the property can be used or redeveloped. Depending upon the nature and extent of the problem, those costs can range from manageable to substantial.
The environmental issue can also create indirect financial consequences.
A lender may reduce the amount it is willing to finance or decline the property altogether. An insurer may impose requirements or limitations. A redevelopment project may be delayed while additional investigation or remediation is completed. Prospective tenants may have concerns about occupancy, and a future purchaser may require its own environmental investigation before accepting the property.
The cost of environmental risk therefore cannot always be measured simply by estimating the cost of cleanup.
The buyer needs to consider how the issue could affect the entire investment and ownership strategy.
Financing and Environmental Due Diligence Are Often Connected
Commercial lenders frequently have their own environmental requirements because the property is typically part of the security supporting the loan.
A lender does not want to discover after a default that the property securing its mortgage carries substantial contamination, regulatory obligations or impaired marketability.
Depending upon the property and financing arrangement, the lender may require a Phase I ESA, an updated environmental report or further investigation before advancing funds. If the Phase I identifies significant concerns, the lender may want those concerns resolved or quantified before finalizing the financing.
This creates an important transaction-management issue for the buyer.
Environmental investigation should be coordinated with financing rather than treated as an entirely separate due diligence exercise. A purchaser may personally be comfortable accepting a particular environmental condition, but that decision has limited practical value if the lender will not finance the property under those circumstances.
Environmental findings should therefore be communicated to the appropriate financing professionals early enough that the buyer understands whether they affect loan approval, available leverage or other financing terms before the transaction becomes firm.
Insurance Can Create Another Layer of Review
Environmental conditions can also influence insurance availability and coverage.
Known contamination, fuel storage, hazardous materials or particular historical uses may result in additional questions from insurers. Certain risks may be excluded from conventional policies or require specialized coverage.
The buyer should avoid assuming that because the current owner has insurance, identical coverage will automatically be available after closing.
Insurance requirements and underwriting standards can change, and the buyer’s intended use may differ from the seller’s existing operation.
Where environmental concerns have been identified, the buyer should determine whether appropriate insurance can be obtained on acceptable terms while sufficient time remains to address the implications.
The issue is not simply whether the property can be insured.
It is whether the insurance available actually addresses the risks the buyer believes it does.
Redevelopment Can Change the Environmental Analysis
Environmental conditions become particularly important where the buyer intends to redevelop or substantially change the use of the property.
A property that can continue operating satisfactorily in its existing condition may face different environmental requirements when buildings are demolished, soil is disturbed or the site is converted to another use.
Historical industrial activity, underground infrastructure, imported fill and previous demolition can all become more significant once redevelopment begins.
In Ontario, certain changes in property use can also engage the Record of Site Condition framework under provincial environmental legislation. Whether an RSC is required depends upon the circumstances and proposed change in use, which is why redevelopment purchasers should obtain appropriate environmental and legal advice before assuming that an existing environmental report is sufficient for their development plans.
The relevant question is therefore not only “What is the environmental condition of the property today?”
It is also “Will that condition allow me to do what I intend to do with the property?”
A buyer acquiring an older industrial site for continued industrial operation may evaluate environmental findings differently from a developer intending to convert the same site to residential use.
Building Materials Can Create Environmental Costs Without Land Contamination
Not every environmental issue involves contaminated soil or groundwater.
Older commercial buildings may contain asbestos-containing materials, lead-based materials, mould, PCBs or other substances that become relevant during maintenance, renovation or demolition.
These concerns may not prevent the building from continuing to operate. Their financial significance can change considerably, however, when the purchaser plans substantial renovation.
Asbestos-containing material that can remain safely managed in place may represent a relatively modest operational concern. The same material can become a significant construction cost when ceilings, walls, mechanical systems or other building components need to be removed.
This is why the buyer’s intended use and renovation plans should form part of environmental due diligence.
The question is not simply whether a material exists.
The buyer needs to understand how ownership and future plans may cause that material to become a cost or operational issue.
Environmental Findings Need to Be Connected to the Purchase Price
When environmental concerns are discovered, the transaction does not automatically need to end.
Some environmental conditions can be remediated. Others can be monitored or managed. Certain risks may be insurable, while others may be reflected appropriately in the purchase price or transaction structure.
The important thing is understanding enough about the issue to make that decision deliberately.
Suppose investigation identifies contamination requiring an estimated remediation program. The buyer now has information that may influence value, financing and negotiation. The parties might agree that the seller will complete specified work before closing, adjust the purchase price, establish another contractual mechanism for dealing with the risk or determine that the issue makes the transaction unacceptable.
The appropriate solution will depend upon the property, the contamination, the parties and their respective objectives.
What matters is that the environmental condition becomes part of the commercial decision rather than an unresolved problem transferred unintentionally to the new owner.
Professional Insight
An environmental finding does not necessarily make a property a bad acquisition. The greater concern is acquiring an environmental problem that has not been sufficiently investigated to understand what it may cost, how it may affect the property and who will be responsible for dealing with it.
Environmental Risk Can Affect Transaction Structure
Once an environmental concern becomes known, the Agreement of Purchase and Sale and related negotiations may need to address it specifically.
A purchaser may require additional access to conduct testing. The parties may need to determine who receives environmental reports, who is responsible for restoring areas disturbed by testing and whether information can be shared with lenders or regulatory authorities.
Representations and warranties may address known environmental conditions, storage tanks, hazardous substances, notices or previous uses. Sellers may be reluctant to provide broad assurances concerning matters outside their knowledge, while buyers may be uncomfortable accepting unknown environmental liability without additional protection.
More complicated transactions can involve remediation obligations, holdbacks, indemnities or other mechanisms developed with environmental and legal advisors.
The wording should reflect the actual risk being addressed.
Generic environmental clauses can create a false sense of protection when they do not correspond to the property, investigation or allocation of responsibility contemplated by the parties.
Due Diligence Timing Matters
Environmental investigations can take time.
A Phase I may lead to a recommendation for further work. A Phase II may require site access, drilling, laboratory analysis and interpretation of results. Additional investigation may then be necessary to determine the extent of an identified condition.
That progression does not always fit comfortably within an unrealistically short due diligence period.
Commercial buyers should therefore consider the potential environmental complexity of the property when negotiating condition periods and access rights.
An industrial site with a long history of environmentally sensitive uses may reasonably require a different investigation period from a relatively new commercial property with a straightforward history.
The Agreement of Purchase and Sale should provide enough time and access for the buyer to complete the level of investigation reasonably contemplated by the transaction.
Otherwise, the buyer may reach the condition deadline with reports underway but important questions still unanswered.
The Seller’s Environmental Reports Are a Starting Point, Not Necessarily the End
A seller may already have Phase I or Phase II reports, remediation records, monitoring information or other environmental documentation.
Those records can be extremely useful because they provide history and may prevent unnecessary duplication.
The buyer should still determine whether the information is sufficiently current, whether the scope addressed the present concern and whether the buyer, lender or environmental consultant can appropriately rely upon the report.
Environmental conditions and professional standards can change, and an older report may have been prepared for a different purpose.
A report commissioned years earlier for refinancing, for example, may not answer every question relevant to a purchaser planning major redevelopment.
Existing documentation should therefore inform the investigation rather than automatically replacing it.
Environmental Risk Can Affect Tenants and Property Operations
Environmental issues can also influence the operational performance of an income-producing property.
A tenant may be concerned about contamination history or restrictions affecting its operations. Environmental work can interfere with access or normal business activity, while remediation obligations can create unexpected capital costs for the owner.
The environmental characteristics of tenants themselves can also matter.
A purchaser acquiring a multi-tenant industrial property should understand what activities existing tenants conduct and whether those operations involve fuels, chemicals, waste or other materials that could create future environmental exposure.
Environmental due diligence should therefore consider not only historical uses but also what is occurring at the property today and how those activities are being managed.
For an investor, that connects environmental review directly to property management and long-term asset protection.
Consider the Environmental Risk You May Eventually Have to Explain to the Next Buyer
Environmental due diligence should not end with the question of whether today’s purchaser is comfortable proceeding.
Eventually, that purchaser may become the seller.
A future buyer may conduct its own Phase I and discover the same historical service station, industrial use or environmental concern. A lender may request the same reports. A developer may ask whether contamination was investigated or remediated.
That makes documentation particularly important.
Environmental assessments, remediation records, regulatory correspondence, monitoring results and other professional documentation can help demonstrate what was identified, how it was investigated and what was done about it.
A known environmental history supported by credible documentation can be considerably easier to evaluate than an uncertain history surrounded by incomplete records.
The buyer should therefore consider whether the environmental risk being accepted today will remain understandable and marketable when the property eventually needs to be refinanced, redeveloped or sold.
Environmental Due Diligence Should Produce a Decision, Not Just a Report
The ultimate purpose of environmental due diligence is not to accumulate reports.
It is to support a decision.
The Phase I may indicate that no further investigation is reasonably recommended. It may identify a concern requiring Phase II investigation. Sampling may identify contamination requiring additional assessment, remediation or negotiation.
At each stage, the buyer should understand what has been learned, what remains uncertain and whether that uncertainty matters to the acquisition.
Environmental due diligence can therefore lead to several legitimate outcomes. The buyer may proceed because the risk is acceptable, conduct further investigation, negotiate changes to price or transaction structure, require particular work before closing or decide that the property no longer fits the acquisition strategy.
None of those outcomes means the environmental investigation succeeded or failed.
The investigation succeeded if it provided enough reliable information for the buyer to make the decision deliberately rather than discovering the problem after closing.
Professional Insight
Good due diligence does not necessarily produce a perfectly clean property. It produces a better-informed buyer. The objective is to understand what you are acquiring, what responsibilities may accompany ownership and whether the expected return or operational benefit justifies accepting those risks.
Environmental Review Requires Several Professional Perspectives
Environmental risk can intersect with several different areas of professional expertise.
An environmental consultant investigates the physical and historical environmental condition of the property. A lawyer advises on contractual obligations, liability, regulatory matters and transaction structure. A lender determines whether the environmental condition satisfies its financing requirements, while an insurer assesses coverage and underwriting.
Engineers, contractors, planners and other professionals may also become involved depending upon the property and intended future use.
The commercial real estate professional should not attempt to replace those specialists.
The advisory role is to help identify where environmental concerns intersect with the client’s acquisition objectives, ensure those questions are recognized early enough to be investigated and help the client understand how the resulting information affects the broader transaction.
Environmental due diligence is most effective when these different professional perspectives are coordinated rather than treated as unrelated reports and approvals.
Final Thoughts
Environmental concerns can significantly affect commercial real estate transactions, but the existence of environmental risk does not automatically mean a property should be avoided.
The more important question is whether the risk can be understood.
Historical land use, neighbouring properties, soil and groundwater conditions, fuel storage, hazardous materials and older building components can all create issues that are not apparent during an ordinary property inspection. A Phase I Environmental Site Assessment can help identify those concerns, while additional investigation such as a Phase II can provide physical evidence where further assessment is warranted.
Once environmental information becomes available, the buyer can consider how it affects financing, insurance, redevelopment, operations, tenant demand, purchase price and eventual resale.
Some concerns can be remediated. Others can be managed or monitored. Certain risks may be reflected in transaction pricing or allocated contractually with appropriate professional advice. In other circumstances, the environmental condition may make the property unsuitable for the buyer’s intended use or risk tolerance.
The purpose of environmental due diligence is therefore not to eliminate every environmental risk from a commercial acquisition. That may not be possible, particularly with older industrial and redevelopment properties.
Its purpose is to identify the risks that matter, investigate them to an appropriate level and understand their potential consequences before ownership transfers and the buyer inherits the problem along with the property.
A commercial property should ultimately be evaluated not only on what it is worth and what income or operational benefit it can produce, but also on the obligations, liabilities and future limitations that may accompany ownership.
Understanding the environmental condition of the asset is an important part of making that decision.
Guidance for Smarter Real Estate Decisions.
This article provides general commercial real estate information and is not environmental, engineering, legal, regulatory, insurance or financial advice. Environmental requirements and potential liabilities depend upon the property, its history, intended use and circumstances of the transaction. Buyers and sellers should obtain advice from appropriately qualified environmental, legal and other professionals where necessary.
Written by Rodney Harvey, Broker of Record at Konfidis, Brokerage providing advisory-focused commercial, industrial, investment, and real estate brokerage services across Oshawa, Durham Region, and Ontario.
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