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Licensed Mold Testing Companies in Katy, TX

14 mold testing (mold assessment) companies are listed for Katy, and every one holds a current Texas license, checked against TDLR on Oct 28, 2026. Compare Google reviews, then call two or three.

Area report · KatyACO
Testing companies
14 licensed in the area
Based in Katy
4
Google reviews
14 of 14 matched
License check
TDLR Oct 28, 2026
Same-job rule
Hire mold removal separately
See the 14 companiesNeed mold removal? See licensed companies
Who's listed

Companies with a Katy address first, then the best-ranked others in the Houston area. Out-of-state license holders are on the statewide list.

How it's ranked

By Google reviews, with a pull toward average until a company has enough of them; companies without reviews follow, A to Z. Nobody can pay to move up.

What we checked

Each company's mold assessment company license is current in TDLR records. We don't verify insurance or work quality: how we verify.

Based in Katy

  1. Mold Busters LLC

    Katy, Harris County · TDLR #ACO1185 · licensed until Jun 22, 2027

    Current license

    5.013 Google reviews

    Call (281) 957-6653WebsiteLicense report

  2. AQ Testing Services, LLC

    Katy, Waller County · TDLR #ACO1233 · licensed until May 15, 2028

    Google listing: AQ Testing

    Current license

    4.652 Google reviews

    Call (713) 775-8863WebsiteLicense report

  3. Terra Nova Consulting Inc

    Katy, Harris County · TDLR #ACO1062 · licensed until Aug 19, 2028

    Current license

    5.01 Google review

    Call (713) 482-8787WebsiteLicense report

  4. ESE Partners LLC

    Katy, Harris County · TDLR #ACO1089 · licensed until Mar 18, 2027

    Current license

    4.03 Google reviews

    Call (281) 501-6100WebsiteLicense report

More in the Houston area

The 10 best-ranked licensed mold testing companies elsewhere in the metro. See all of them on the Houston mold testing page.

  1. Smith Group Mold Services LLC

    Houston, Harris County · TDLR #ACO1313 · licensed until Apr 19, 2028

    Google listing: Smith Group Property Inspections

    Current license

    5.01549 Google reviews

    Call (281) 734-3118WebsiteLicense report

  2. HTX Home Inspections

    League City, Galveston County · TDLR #ACO1316 · licensed until Jul 6, 2028

    Current license

    5.01353 Google reviews

    Call (832) 425-8826WebsiteLicense report

  3. Houston Home Inspections, PLLC

    Magnolia, Montgomery County · TDLR #ACO1201 · licensed until Dec 26, 2027

    Google listing: Houston Inspections

    Current license

    5.0473 Google reviews

    Call (713) 408-1129WebsiteLicense report

  4. Kingdom Inspections LLC

    Conroe, Montgomery County · TDLR #ACO1310 · licensed until Mar 26, 2028

    Current license

    5.080 Google reviews

    Call (804) 420-7504WebsiteLicense report

  5. 1st Rate Inspections

    Cypress, Harris County · TDLR #ACO1144 · licensed until Mar 7, 2028

    Current license

    4.92399 Google reviews

    Call (832) 567-5791WebsiteLicense report

  6. Redfish Inspections, LLC

    Houston, Harris County · TDLR #ACO1237 · licensed until Dec 4, 2027

    Current license

    4.91514 Google reviews

    Call (713) 568-8184WebsiteLicense report

  7. Noble Property Inspections, PLLC

    Missouri City, Fort Bend County · TDLR #ACO1314 · licensed until Apr 20, 2028

    Current license

    4.91261 Google reviews

    Call (832) 551-1397WebsiteLicense report

  8. Reagan Environmental

    Montgomery, Montgomery County · TDLR #ACO1253 · licensed until Apr 9, 2028

    Current license

    4.972 Google reviews

    Call (832) 623-4889WebsiteLicense report

  9. Texas Mold Specialists

    Houston, Harris County · TDLR #ACO1272 · licensed until Mar 25, 2027

    Current license

    4.969 Google reviews

    Call (713) 682-0133WebsiteLicense report

  10. Thorough Point Inspections

    Porter, Harris County · TDLR #ACO1307 · licensed until Feb 26, 2028

    Current license

    5.017 Google reviews

    Call (346) 455-4730WebsiteLicense report

Check the license yourself

Licenses can lapse between our updates. Confirm a number before work starts.

Texas mold license check

Katy FAQ

Mold Testing in Katy: common questions

How much does mold testing cost in Katy?

It depends mostly on how much material is affected and how it has to be handled. We don't publish a price for Katy without data to back it; our mold testing cost guide covers Texas price ranges and what changes them. Get written quotes from at least two licensed companies.

Can the same company test for mold and remove it?

Not on the same project. Texas Occupations Code §1958.155 bars a license holder from doing both mold assessment and mold remediation on one project, and bars anyone from owning a stake in both companies on it. A company can hold both licenses and do each on different jobs. Find a licensed mold removal company in Katy.

What happens after mold testing?

If the assessor finds mold that needs removing, they write a remediation protocol. You hire a different licensed removal company to follow it, then the assessor comes back for a clearance check. After it passes, you should receive a Certificate of Mold Damage Remediation within ten days.

How do I check a mold testing company's license?

Search the company name or license number in our Texas mold license check, or on TDLR's own license search. A mold testing company needs a mold assessment company license; its number starts with ACO.

How many licensed mold testing companies are in Katy?

4 licensed mold testing companies have a Katy address, according to TDLR records as of Oct 28, 2026.

Mold Testing elsewhere in the Houston area