Phase 1 ESA Providers in Colorado
28 firms provide Phase 1 ESA services in Colorado — 2 with a verified Colorado presence and 26 national providers covering the state. Typical Colorado pricing runs $2,185–$5,750.
Those figures come from our Colorado Phase 1 ESA cost analysis, which applies Colorado's regional cost index to the national base rate of $1,900–$5,000. Colorado sits 15% above that base, reflecting local labor rates and market demand.
Colorado Local Providers (2)
Firms with a verified Colorado presence. Local providers typically know county-level records access and regional pricing better than a national desk.
National Providers Serving Colorado (26)
National firms carry multi-state coverage and are usually the right call for portfolio deals spanning several states.
How to Choose a Phase 1 ESA Provider in Colorado
- Environmental Professional qualification. The report must be prepared by an EP as defined in 40 CFR 312. Ask who signs it, not just who sells it.
- Colorado records access. Historical records quality varies by county. A firm that has worked the county before moves faster on Sanborn maps, permits and agency files.
- Lender acceptance. Confirm the firm's reports are accepted by your lender — see lender requirements before you commission.
- Phase 2 capability. If the Phase 1 finds a REC you will want the same firm to scope the Phase 2; switching firms mid-investigation costs time and money.
- Turnaround honesty. Two to three weeks is standard. A quote promising materially faster at no premium is worth questioning.
Colorado Metro Markets
Phase 1 ESA pricing across the Colorado markets we track. Most providers above serve all of them:
| Market | Phase 1 ESA cost |
|---|---|
| Denver | $2,404 – $6,326 |
| Colorado Springs | $2,163 – $5,692 |
| Aurora | $2,316 – $6,096 |
| Fort Collins | $2,076 – $5,462 |
| Lakewood | $2,185 – $5,750 |
What Moves the Price in Colorado
Property type shifts Phase 1 ESA cost more than geography does. These carry the largest premiums over a standard commercial parcel:
- Junkyard / Salvage Yard — +60% ($3,496–$9,200 in Colorado).
- Gas Station — +50% ($3,278–$8,625 in Colorado).
- Dry Cleaner — +40% ($3,059–$8,050 in Colorado).
- Manufacturing Facility — +40% ($3,059–$8,050 in Colorado).
- Shooting Range — +35% ($2,950–$7,763 in Colorado).
- Marina / Boat Storage — +35% ($2,950–$7,763 in Colorado).
Turnaround and Rush Pricing in Colorado
Standard turnaround is about 14 days from engagement in Colorado. Rush service compresses that to roughly 5 days and prices at $3,059–$8,050 — a 40% premium. The binding constraint is usually records retrieval and agency response times, not the site visit, so a firm that already works the county often delivers faster at the same price.
Ask any Colorado provider what their quoted turnaround actually starts from — engagement, retainer receipt, or receipt of the property information questionnaire. That definition is where most schedule disputes come from.
If the Colorado Phase 1 Finds a REC
A Phase 1 that identifies a Recognized Environmental Condition triggers a Phase 2 ESA — soil, groundwater and vapor sampling with laboratory analysis. In Colorado that runs $5,750–$28,750, against $2,185–$5,750 for the Phase 1 itself.
This is worth asking about before you engage, not after. A consultant who can carry the work through to Phase 2 already knows the site, and bundling the two typically costs less than bringing in a second firm mid-investigation. See Colorado Phase 2 ESA costs for the scope breakdown.
Frequently Asked Questions
How much does a Phase 1 ESA cost in Colorado?
A Phase 1 ESA in Colorado typically costs $2,185 to $5,750, about 15% above the national base rate. Property type and scope move the figure more than location does.
How many Phase 1 ESA providers serve Colorado?
We track 28 firms serving Colorado: 2 with a verified Colorado presence and 26 national providers that cover the state.
Do I need a Colorado-licensed consultant?
A Phase 1 ESA must be conducted by an Environmental Professional as defined by the EPA's All Appropriate Inquiries rule (40 CFR 312). That is a federal qualification standard rather than a Colorado licence, which is why national firms can work in every state. Colorado-specific knowledge still matters for records access and state cleanup programs.