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ASTM E1527-21 Phase I ESA lender requirements, M&T Bank, KeyBank, PNC, Buffalo & Pittsburgh markets

ASTM E1527-21 is the current Phase I Environmental Site Assessment standard (post-November 2022 EPA AAI rule). This guide walks through what regional lenders M&T Bank, KeyBank, PNC, and FNB actually require for commercial real estate environmental due diligence.

Reviewer note

Lender requirement details current as of 2026. Confirmed against published environmental policy documents from M&T Bank, KeyBank, PNC. Specific underwriting team requirements may vary case-by-case.

StandardASTM E1527-21
EPA AAI ruleNov 2022
Typical turnaround10-15 days
Cost range$2,800–$8,000

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Why ASTM E1527-21 matters now

EPA's All Appropriate Inquiries (AAI) rule under CERCLA establishes the federal due-diligence standard for commercial real estate environmental investigation. EPA's November 2022 final rule formally adopted ASTM E1527-21 (published November 2021) as the AAI-compliant standard. ASTM E1527-13 (the prior version) is no longer the AAI standard. Lenders requiring AAI-compliant Phase I work must accept reports issued against E1527-21. And many lenders won't accept reports issued against the older E1527-13.

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M&T Bank commercial environmental requirements

M&T Bank's commercial lending team typically requires Phase I ESA on commercial real estate loans above $1 million and on smaller loans where the parcel's historical use or location flags environmental risk. M&T's environmental review desk requires reports issued against E1527-21 + AAI-compliant Environmental Professional execution + clean dataset of regulatory database screens. Turnaround expectations: 10-15 business days from order to delivery. Phase II progression required when Recognized Environmental Conditions (RECs) are identified.

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KeyBank commercial environmental requirements

KeyBank's commercial environmental policy aligns with M&T's framework. Phase I required on commercial loans typically above $1.5 million with risk-adjusted thresholds for lower-value loans on properties with known historical environmental concern (industrial parcels, former gas station sites, dry cleaner sites). KeyBank accepts E1527-21 reports from Environmental Professionals with appropriate qualifications. Phase II + Phase III progression required when RECs identified.

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PNC + FNB Pittsburgh-area commercial requirements

PNC's Pittsburgh commercial lending operation handles substantial commercial real estate volume across Western PA. PNC requires Phase I ESA on most commercial loans above $1 million and on SBA 7(a) and 504 loans regardless of size (per SBA's federal environmental policy). First National Bank of PA (FNB) follows similar thresholds. Both lenders accept E1527-21 reports + require Phase II progression when RECs identified.

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SBA 7(a) and 504 loan environmental requirements

SBA's environmental policy (SOP 50 10 6) requires Phase I ESA on all 7(a) and 504 commercial real estate loans regardless of loan amount. SBA requires the Phase I to be AAI-compliant (E1527-21 currently) and to be executed by a qualified Environmental Professional per AAI definitions. SBA also requires specific language in the Phase I conclusion section confirming AAI compliance. SBA's RECs threshold for requiring Phase II is more stringent than typical commercial lender thresholds.

FAQ

Related questions

What's the difference between E1527-13 and E1527-21?

E1527-21 updated several elements: tightened the definition of 'Recognized Environmental Condition' (REC) to better distinguish current from historical conditions; updated historical research methodology requirements including more specific Sanborn map + city directory documentation expectations; clarified vapor intrusion / vapor encroachment assessment language; updated the standard data sources required for regulatory database review. EPA's November 2022 AAI rule formally requires E1527-21 for federal due-diligence purposes. Reports issued against E1527-13 may not meet AAI requirements.

How long does Phase I ESA take in Buffalo + Pittsburgh?

Standard turnaround is 10-15 business days from order to final report delivery. Faster turnaround (7-10 business days) is available on a rush basis for additional fee. The timeline includes: historical aerial + Sanborn + city directory research (5-7 business days, runs concurrently); regulatory database screening (1-2 business days); site reconnaissance + interviews (1-2 business days); report drafting + QA review (3-5 business days).

What's the cost difference between Buffalo and Pittsburgh Phase I work?

Cost is driven by parcel complexity, historical research depth, and Environmental Professional fees. Not significantly by metro. Standard Phase I ESA cost in either metro: $2,800-$4,500 for typical commercial parcels. Industrial parcels or parcels with extensive historical use may run $5,500-$8,000. Multi-parcel portfolios scale linearly with discount for shared research data on adjacent parcels.

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