Mold Testing vs Mold Remediation: Who Does What in Texas

If you've spotted mold (or smelled it) in your San Antonio home, you've probably run into two very different services: mold testing and mold remediation. In Texas they're regulated as two separate licenses on purpose — and understanding the difference saves you money and makes sure the work is done right.

The Two Licenses Are Different on Purpose

The Texas Department of Licensing and Regulation (TDLR) issues two distinct mold credentials:

Texas generally prohibits the same company from performing both assessment and remediation on the same property. The reason is simple: if the company testing the mold is also the company being paid to remove it, the results aren't independent. Keeping the two roles separate keeps the testing honest.

When You Need a Mold Assessor (Testing)

Call a licensed Texas Mold Assessor when:

When You Only Need a Remediation Contractor (Removal)

If you can see the mold and you know where the moisture came from (a known leak, a slab seep, a roof failure), the EPA's guidance is straightforward: clean it up, regardless of species. In that case you don't need a separate testing step before remediation — you need a licensed Mold Remediation Contractor to contain the area, remove the contaminated materials, HEPA-clean the space, and address the moisture source so it doesn't come back.

What AST Does

AST Cleaning & Restoration is a Texas TDLR-licensed Mold Remediation Contractor (RCO1739). We remediate. We do not test. When a customer needs formal mold testing, an assessor protocol, or post-remediation clearance, we refer them to an independent licensed Texas Mold Assessor — we'll happily recommend assessors we've worked alongside in San Antonio.

What to Expect from a Remediation Walk-Through

When AST visits your property, our free walk-through includes:

This is an estimating walk-through, not a regulated TDLR assessment. If a formal assessment is required (insurance, real estate, post-remediation clearance), we'll point you to an independent assessor before we start any removal work.

The Bottom Line

Visible mold and a known moisture source? Call a remediation contractor. Hidden mold, insurance documentation, or clearance verification? Call an independent licensed Texas Mold Assessor first. The two-license system exists so the people testing your home aren't the people you're paying to remove the mold — and that's the right way to keep results honest.