When a Phase I Is Required and What It Finds

A Phase I environmental site assessment is a structured investigation of a commercial property’s environmental history and current conditions. Lenders require Phase I on most commercial acquisitions and virtually all industrial ones. Buyers should commission Phase I on any commercial property in Rochester where past uses raise contamination possibilities, not just when a lender mandates it. Discovering environmental issues during due diligence is dramatically less expensive than discovering them after closing.

When Phase I is required. Any industrial acquisition with lender financing. Any commercial building with prior industrial or manufacturing history. Buildings previously used as gas stations, dry cleaners, auto repair shops, print shops, machine shops, or chemical storage facilities. Buildings adjacent to any of these uses. SBA financing requires Phase I on any commercial acquisition. Most conventional commercial lenders require Phase I on transactions above $500,000 unless the property is clearly residential in prior use.

What Phase I costs and takes. Phase I typically runs $2,500 to $4,500 in the Rochester market and takes 2 to 3 weeks from engagement to written report delivery. Rush service is sometimes available at premium pricing. Buyers should engage the environmental consultant in week one of due diligence rather than waiting because the timeline can eat significant contingency period if delayed. The consultant should be qualified as an environmental professional under ASTM E1527, the governing standard.

What the Phase I process covers. The environmental professional reviews historical records including aerial photographs, fire insurance maps called Sanborn maps, city directories, and prior environmental filings. These records reveal how the site was used over decades. Regulatory database searches identify contamination records, underground storage tanks, hazardous waste sites, and environmental violations on or near the property. The professional conducts a site visit examining visible conditions, interviews current and prior owners and tenants where possible, and produces a written report following ASTM standards.

What Phase I finds. The report identifies any recognized environmental conditions, called RECs. RECs are conditions indicating the presence or likely presence of hazardous substances or petroleum products on the property in violation of environmental regulations. The report describes each REC, the basis for the finding, and recommendations for further investigation. Common Rochester area RECs on older industrial include prior dry cleaning or degreasing operations, underground storage tanks that may still exist, historical chemical storage, prior automotive supplier manufacturing, and neighboring property contamination that may have migrated. The region’s manufacturing heritage produces more RECs than markets without that industrial history.

What Phase I does not do. The report does not include sampling. Phase I does not test soil, groundwater, or building materials for actual contamination. Phase I identifies conditions suggesting contamination might exist and recommends further investigation if RECs are found. Phase II includes actual sampling and typically costs $10,000 to $50,000 or more depending on scope. Phase III involves remediation of confirmed contamination and can cost far more.

How Phase I findings affect deals. A clean Phase I clears the lender requirement and lets the deal proceed. A Phase I with RECs typically triggers Phase II investigation. RECs do not automatically kill deals, but they change the negotiation. Buyers and sellers negotiate responsibility for further investigation, cleanup costs, and long term liability. Michigan Part 201 of the state’s Natural Resources and Environmental Protection Act provides a Baseline Environmental Assessment framework that allocates liability on contaminated properties, and experienced environmental consultants and attorneys structure protections using it.

The Rochester area industrial history matters. Historic manufacturing corridors including Van Dyke, older industrial in Warren, and automotive supplier facilities throughout Macomb and Oakland Counties produce more Phase I findings than newer developments. That does not make these properties unbuyable, but it does make Phase I mandatory rather than optional.

TDG Commercial, known as best commercial real estate agents in Rochester, coordinates Phase I work with qualified environmental professionals and helps clients evaluate findings and negotiate deal terms when RECs surface.