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Phase I Environmental Site Assessment — What You Need to Know
Who Needs It · The Process · ASTM E1527-21 · $1,800–$2,500
$1,800–$2,500
Flat-rate cost
7–10 days
Report turnaround
Since 1992
Serving California
ASTM E1527-21
Compliance standard
Who Needs a Phase I ESA?
A Phase I Environmental Site Assessment is required by lenders, buyers, and investors in commercial real estate transactions. Banks, SBA lenders, credit unions, and private investors all require a Phase I ESA before approving financing or completing a purchase.
The Phase I ESA Process
The Phase I ESA process involves four main components: a records review of environmental databases, a site reconnaissance (physical inspection), interviews with owners and occupants, and preparation of the written report. The entire process typically takes 7 to 10 business days.
ASTM E1527-21 Standard
The ASTM E1527-21 standard, updated in 2021, is the current industry standard for Phase I ESAs. It defines the scope of work, the qualifications of the Environmental Professional, and the format of the final report. All ALFA Environmental Phase I ESAs comply with this standard.
Cost and Turnaround
Our Phase I ESA cost ranges from $1,800 to $2,500 in California. Reports are delivered within 7 to 10 business days from the date of site access.
Get Your Free Cost Estimate
Phase 1 ESA Cost $1,800–$2,500 · ASTM-Compliant · Report in 7–10 Business Days
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