Typical Phase 1 ESA cost in Missouri
$1,700–$3,825
per standard commercial parcel
Compiled from published 2026 industry cost guides (-15% vs. the $2,000-$4,500 national baseline). Full methodology on the cost data page.
Phase 1 Environmental Site Assessment Cost in Missouri
Phase 1 Environmental Site Assessment work in Missouri follows the same federal standard as everywhere else in the country: ASTM E1527-21 and the EPA's All Appropriate Inquiries rule. Missouri runs a discount of about 15% below the national baseline in the published 2026 cost guides, and every consultant working here still has to complete the same records review, site visit, and interviews the standard requires nationwide before a lender or a CERCLA liability-protection buyer will accept the report.
What tends to drive cost up in Missouri
What changes state to state is which state-level agency's records sit alongside the federal sources (CERCLIS/Superfund, RCRA) every Phase 1 ESA checks. In Missouri, that agency is the Missouri Department of Natural Resources. A consultant working in Missouri should already have an established process for pulling those records; confirming they have done so before is a reasonable question to ask when comparing quotes.
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Frequently asked questions: Missouri
What does a Phase 1 ESA cost in Missouri?
Published 2026 cost guides put Missouri about 15% below the national baseline, putting a typical standard commercial parcel in the $1,700 to $3,825 range. See the full 50-state table for how that compares to neighboring states.
Does Missouri have its own environmental review process?
Yes. The Missouri Department of Natural Resources runs Missouri's state-level environmental programs separately from the federal AAI process. A Phase 1 ESA still has to meet the ASTM E1527-21 standard for CERCLA liability protection regardless; the state agency's records come into play as one more source a consultant checks, and separately if contamination is found or a state disclosure law applies.
How long does a Phase 1 ESA take in Missouri?
The standard national turnaround of 2 to 4 weeks from authorization to final report applies in Missouri the same as elsewhere. Rush service in 5 to 10 business days is commonly available from most firms for a premium, and the completed report is valid for 180 days from the site inspection under ASTM E1527-21.
Other states
Compare the state-level Phase 1 ESA cost range in other active commercial real estate markets.