Contact All Sides
Environmental
When You Probably Need a Phase I ESA Investigation
Most people come to us because a lender flagged it, but a Phase I ESA is worth ordering any time money and land are involved.
- You’re purchasing commercial or industrial property
- Your lender or bank has required it before closing
- You’re developing land with an unknown prior use
- You want liability protection before acquisition
- You’re refinancing a property with environmental history
What Goes Into Every Phase I We Complete
- Historical records, aerial photos, and city directories review
- Federal, state, and local regulatory database review
- On-site visual inspection of the property
- Review of neighbouring properties for off-site risk
- Interviews with owners, occupants, and local regulatory contacts
- Full written report with findings and recommendations
Investigate What You’re Buying Before You Sign
Whether your lender requested it or you just want peace of mind, All Sides Environmental delivers thorough, ASTM-compliant Phase I ESAs for urban and rural properties across the greater Houston area and all of Texas.
A Property’s Background Check Without the Guesswork
A Phase I Environmental Site Assessment is a structured review of a property’s history, regulatory records, and current conditions, all designed to identify any recognized environmental conditions before a transaction closes. It doesn’t involve any sampling or lab work.
Think of it as doing your homework on a property before putting money down. It’s required by most commercial lenders and considered industry standard for any serious property acquisition in Texas.
HOW WE WORK
Our Process for Phase I ESA Investigation
1
We Start with a Quick Consultation
Tell us the property address, your timeline, and why you need the ESA. We will ask a few targeted questions to make sure the scope is right and give you a clear quote upfront.
2
Records Research & Database Review
We pull historical records, aerial photography, regulatory databases, and government records to piece together the full environmental history of the property and any nearby sites of concern.
3
On-Site Visual Inspection
We physically walk the property, documenting observations and flagging any visual indicators of past or present environmental concerns, including neighboring land uses that could affect the site.
4
Report Delivery & Walkthrough
You receive a complete, ASTM-compliant Phase I ESA report. Our team walks you through the findings in plain language so you know exactly what it means for your deal or project.
Skipping a Phase I Can Cost You Far More Than the Report
Environmental contamination doesn’t show up on a standard property inspection. If you close without a Phase I and contamination is later discovered, cleanup costs and deal-impacting liability can land on the current owner, regardless of who caused it.
A Phase I ESA is also the documentation buyers use to support EPA’s All Appropriate Inquiries (AAI) requirement, an important step for qualifying for certain CERCLA landowner liability protections, as long as required steps are taken before acquisition and ongoing obligations are met.
When appropriate, Phase I due diligence is typically performed using ASTM E1527-21 (most commercial properties) and may use ASTM E2247-23 for qualifying rural/forestland properties.
OUR RECENT WORKS
Showcasing Our Latest
Environmental Successes
FAQ’S
How long does a Phase I ESA take?
Most Phase I ESAs are completed within 7–14 business days from the time we receive your project information. If you’re working against a closing deadline, let us know early, and we’ll do our best to accommodate your timeline.
Does a Phase I ESA involve any soil or water sampling?
No. A Phase I is entirely non-invasive, no drilling, no sampling, no lab work. It’s a records review and visual inspection only. If sampling is needed based on findings, that moves into Phase II territory.
How long is a Phase I ESA valid?
A Phase I is generally considered current for up to 6 months. If your closing goes beyond that deadline, the Phase I ESA will need to be updated or “refreshed”. “Refreshing” a Phase I ESA typically costs less than the original ESA and can be completed by All Sides as well.
Will my lender accept All Sides Environmental's Phase I ESA report?
Yes. Our Phase I ESAs follow ASTM E1527-21, which most commercial lenders and SBA-backed financing require across Texas. For qualifying rural/large-acreage collateral, we can also complete Phase I work consistent with ASTM E2247-23 when appropriate.
What happens if the Phase I identifies a problem?
If we identify a recognized environmental condition, we’ll explain exactly what it means and whether a Phase II ESA is recommended. Finding something isn’t the end of the deal. It just means you have the information to negotiate or plan accordingly.
OUR TESTIMONIALS
Honest Words from Clients Who’ve
Worked with Us
– Juan P. Domínguez
Customer
A tenant complained of headaches and a strange smell that no one else noticed. All Sides Environmental’s IAQ testing pinpointed elevated VOCs from new flooring adhesive, not mold or other previously considered issues. We fixed it fast, and the tenant stayed. Their expertise saved the relationship.
– Lewis Okser
Customer
Our Phase I flagged a recognized environmental condition on a Houston-area tract. All Sides Environmental decoded complex Phase II findings into plain language, explaining exactly what contamination levels meant for our plans. This clarity helped us confidently decide whether to proceed, that’s rare expertise in this field.
– Lena Brewster
Customer
Renovating a late-70s facility wing, our contractor required asbestos clearance. Dean’s team sampled floor tiles, ceiling material, and pipe insulation on short notice, delivering a report in four days, and flagged an area we’d overlooked. Their thoroughness saved us from a costly mid-renovation surprise.
– Joanna Prentice
Customer
Two companies gave us a clean bill of health, but something felt off. The All Sides team dug deeper and inspected longer. They used tools that looked inside the walls near our HVAC closet and found a hidden mold colony. All Sides oversaw remediation end-to-end, and we tested clean and received our clearance certificate within a week.
– Randy Cabrera
Customer
Three weeks from closing on a Katy strip mall, our lender suddenly required a Phase I ESA. All Sides scheduled us in two days, was on-site by Thursday, and delivered the report before our deadline. The lender accepted it without question, and I’ve since referred them twice.
