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September 2025 / Published in Environmental Due Diligence

Why get a Phase 1 ESA when buying Commercial Real Estate?

phase 1 esa cre professionals a3e environmental

A Phase 1 ESA is the unsung hero of the commercial real estate world. It exists to prevent a buyer, seller, or lender from walking blindly into the purchase, sale, or financing of an environmentally compromised property. Without it, you could unknowingly buy a contaminated parcel at a price that ignores the environmental cleanup costs — costs that could easily exceed the property’s value.

In the CRE space, the strategy for commissioning a Phase 1 ESA depends on your role in the transaction. There are three main players: the seller, the buyer, and the lender. Each has their own priorities, risks, and benefits when it comes to due diligence.

Phase 1 ESA: Perspectives from Each Side of the Deal

The Seller’s View

While sellers are less likely to commission a Phase 1 ESA, doing so can be a strategic move. Proactive sellers use it to answer environmental questions before they’re asked, heading off surprises that can derail negotiations. If an ESA reveals an issue, the seller has time to either remediate the problem or adjust the price accordingly. This converts an uncomfortable unknown into a manageable known, smoothing the path to closing.

The Buyer’s View

For buyers, a Phase 1 ESA is non-negotiable. Skip it, and you risk inheriting environmental liabilities along with your new asset — liabilities that could bankrupt your deal. Properties with contamination are often overvalued by the full cost of remediation. Some end up as abandoned “Brownfields”: too contaminated to sell, too costly to clean, and ultimately seized by municipalities for unpaid taxes.

The Lender’s View

Banks require Phase 1 ESAs to protect their collateral. Without it, they risk inheriting contamination if they foreclose on a property. Loan-to-Value ratios depend on accurate property valuations, and environmental risk can shrink those values overnight.

The CRE Broker’s View

For brokers, a Phase 1 ESA helps price a property correctly and keeps deals moving. Advising a seller to get one early can establish trust with buyers, reduce negotiation friction, and set realistic expectations long before closing.

Why It Matters for CRE Professionals

A properly executed Phase 1 ESA is more than a compliance checkbox — it’s a negotiation tool, a risk shield, and a time-saver. It:

  • Protects against catastrophic cleanup liabilities.

  • Informs accurate property valuation.

  • Builds credibility and trust between transaction parties.

  • Keeps deals from collapsing at the eleventh hour.

In a high-stakes CRE deal, the cost of skipping a Phase 1 ESA is rarely worth the gamble.

We Fix Gnarly Environmental Problems

We Fix Gnarly Environmental Problems

Nationwide Expertise, Local Insight

While A3 Environmental Consultants provides Phase 1 ESA services nationwide, we bring a deep understanding of regional environmental issues, regulatory requirements, and lender expectations. Whether your property is in a major metro, a rural township, or anywhere in between, we know the questions to ask and the red flags to look for.

If you need a Phase 1 for Commercial Real Estate, or research or testing done on your commercial property or one you are interested in purchasing, give A3 Environmental Consultants a call. We’ll get your project done with the utmost in confidentiality, we’ll meet or exceed ASTM Standard E1527-21 on any sort of commercial or industrial property. Our reports meet the requirements of all lenders and government agencies such as the Small Business Administration (SBA), Housing and Urban Development (HUD) and the United States Department of Agriculture (USDA). A3 Environmental Consultants can be reached at (888) 405-1742 or by email at Info@A3E.com.

What you can read next

Confidentiality regarding Phase 1 Environmental Reports
Phase 1 Environmental Reports: What CRE Buyers Must Know
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What is an Environmental REC?
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Environmental Site Assessment: Beginner’s Guide for Commercial Property Buyers
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Environmental Due Diligence

ES – Environmental Screens
RSRA – Record Search Risk Assessment
TSA
– Transaction Screen
Phase 1 ESA
Phase 2 ESA
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Soil Gas –
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