Glossary
Phase I Environmental Site Assessment (Phase I ESA)
A Phase I Environmental Site Assessment (Phase I ESA) is a non-invasive investigation of a property's current and historical uses to identify potential environmental contamination, called recognized environmental conditions. It reviews records, aerial photographs, regulatory databases and a site inspection, and it is a standard requirement for commercial real estate loans and acquisitions.
How it is used in underwriting
Lenders require a Phase I ESA because environmental contamination can destroy collateral value and create cleanup liability that exceeds the property's worth. Buyers commission one to qualify for liability protections under federal environmental law, which generally require all appropriate inquiries before acquisition. The report, prepared by an environmental professional under the ASTM E1527 standard practice, identifies recognized environmental conditions such as former gas stations, dry cleaners, industrial uses, underground storage tanks or nearby contaminated sites. Underwriters review the conclusions and any recommendations, and loan approvals are often conditioned on resolving them.
A Phase I does not involve sampling soil or groundwater. If it identifies a recognized environmental condition, a Phase II ESA, which includes sampling and laboratory analysis, may be recommended to confirm whether contamination exists and how severe it is. Not every finding requires a Phase II; some can be addressed with an operations and maintenance plan, insurance or an indemnity. Reports have a limited shelf life for liability protection purposes, so older reports may need updating. Asbestos, lead paint, radon and mold are generally outside the standard scope unless specifically added, which matters for older buildings and residential properties.
Frequently asked questions
What is a recognized environmental condition?
A recognized environmental condition (REC) is the presence or likely presence of hazardous substances or petroleum products at a property due to a release, or under conditions that pose a material threat of a future release. Former gas stations, dry cleaners and leaking tanks are common sources. A REC often triggers further investigation.
When is a Phase II ESA required?
A Phase II ESA is usually recommended when a Phase I identifies a recognized environmental condition that needs confirmation. It involves sampling soil, groundwater or soil vapor to determine whether contamination exists and its extent. Lenders often require a Phase II before closing if a significant REC is identified.
How long is a Phase I ESA valid?
For purposes of federal liability protections, key components of a Phase I generally must be completed or updated within 180 days before acquisition, and the report is generally considered viable for up to one year with updates. Lenders set their own requirements, so confirm the acceptable report age with the lender.
Related terms
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