Most states do not license mold remediation. Texas does, and the structure it uses surprises people — including contractors who move here from elsewhere and homeowners who assume mold cleanup is just cleanup.
Getting this wrong costs money and can complicate a future sale. Here is the shape of it.
A note on what this article is: an explanation of how the Texas process works, so you know what should be happening and in what order. Regulated mold work is performed by TDLR-licensed professionals. Weatherford Restoration Heroes is not a licensed mold assessor or remediator. If you want this talked through against your own situation, text HELP to 817-945-7946 and we can get you in touch with a specialist who will explain it in more detail and work out whether the threshold applies.
The threshold that governs everything
Texas Occupations Code Chapter 1958, administered by the Texas Department of Licensing and Regulation, sets the trigger at area.
Remediation in an area where mold contamination affects a total surface area of less than 25 contiguous square feet does not require a license under the chapter.
At 25 contiguous square feet or more, the full regime applies.
The word doing the heavy lifting is contiguous. Three separate small patches in different rooms is a different situation from one continuous 30 square foot area behind a shower wall. Twenty-five contiguous square feet is roughly a five-by-five area — smaller than most people picture, and easily reached by a ceiling cavity above a bathroom or the wall behind a failed shower pan.
Why two separate companies
This is the part that catches people out. For projects at or above the threshold, Texas requires:
A licensed Mold Assessment Consultant (MAC) who inspects the property, determines the extent of contamination, and writes a remediation protocol — the document specifying what has to be done. The same consultant later performs clearance testing to verify the work succeeded.
A licensed Mold Remediation Contractor (MRC) who performs the actual remediation, following that protocol.
These must be different parties. The separation is deliberate: it removes the conflict of interest inherent in having the company that diagnoses the problem also be the company that sells you the cure, and it means the party verifying the work is not the party that performed it.
TDLR also requires notification before remediation begins.
So the sequence is: assessor inspects → assessor writes protocol → TDLR notified → contractor remediates to protocol → assessor performs clearance → certificate issued.
If a single company offers to inspect, test, and remediate as one package on a job at or above the threshold, that is not how Texas structures this. Ask for license numbers and verify them through TDLR’s public license search before signing anything.
The exemptions, and their limits
Section 1958.102 exempts several categories:
- Property owners and their employees or managing agents, working on their own property
- Residential properties with fewer than ten dwelling units
- Builders during construction or warranty work on one- or two-family dwellings
So yes — you can remediate mold in your own house yourself, regardless of area.
But every one of those exemptions is voided if the person engages in mold assessment or remediation as a business for the public. You can do your own. You cannot do your neighbor’s for money without a license.
The certificate, and the five-year obligation
When licensed remediation is completed, the contractor issues a Certificate of Mold Damage Remediation, generally within ten days of completion.
Keep it. Under § 1958.154, a property owner must provide a copy to a buyer, and that obligation runs for five years from the date on the certificate.
This is worth weighing before deciding to handle a borderline situation informally. A documented, licensed remediation with a clearance report is an asset when you sell — it demonstrates the problem was identified, properly addressed, and independently verified. An undocumented cleanup that a buyer’s inspector later finds evidence of is the opposite.
Advertising rules that tell you something
Texas Occupations Code Chapter 60 requires regulated individuals who solicit business in consumers’ homes to display their license number on documents, advertisements, business cards, and logos, with civil penalties available for violations. TDLR maintains a public sanctions list for the mold program.
The useful consumer takeaway: a company advertising mold remediation services in Texas without a visible license number is telling you something. Check it against TDLR’s license search.
What this means practically
If the affected area is clearly small — under 25 contiguous square feet, a defined spot with a known cause you have fixed — you have latitude. Many homeowners handle these directly.
If the area is at or above the threshold, or you genuinely do not know how big it is, start with a licensed Mold Assessment Consultant, not a remediation contractor. The assessor determines scope and writes the protocol; hiring in the other order means the contractor is working without the document the law requires.
If a real estate transaction is involved in either direction, do it through the licensed process and keep the certificate. The documentation is worth more than the cost difference.
If mold followed a water loss, check your policy’s mold endorsement specifically. Texas homeowners policies frequently cap mold remediation at a dollar limit well below what people expect, and coverage generally follows the cause — sudden and accidental events fare better than long-standing leaks.
The honest summary
Texas built a system that separates diagnosis from treatment, requires independent verification, and creates a paper trail that follows the property for five years. It adds cost and steps relative to states with no licensing at all.
It also means that when the process is followed, you end up with something genuinely useful: independent confirmation that the problem is gone, in a document a buyer’s agent will accept.
Sources
Related: Mold Remediation in Weatherford, TX — What Texas Law Requires