Texas Mold Licensing Rules
Deep-verified against primary sources, 5 Aug 2026. General information, not legal advice.
| Licensing agency | Texas Department of Licensing and Regulation (TDLR) |
|---|---|
| Who is licensed | Companies and individuals |
| When a licence is required | 25 contiguous square feet of mold (licence required for remediation above this; assessment has no such exemption) (Tex. Occ. Code §1958.102(c)) |
| Insurance requirement | Liability insurance required by rule (16 TAC §78.40; amount set by rule under Occ. Code §1958.104(4)) |
| Licence term | 2 years |
| Official licence lookup | https://vo.licensing.tdlr.texas.gov/datamart/login.do |
The rule most consumers don't know
A license holder may not perform both mold assessment and mold remediation on the same project — Tex. Occ. Code §1958.155(a), with a common-ownership bar at §1958.155(b). The assessor's document the statute requires is a written work analysis (§1958.151); the remediator prepares the work plan (§1958.152).
In plain terms: the person who inspects your mold problem cannot be the person you pay to fix it. The assessor writes the protocol; an independent remediator executes it. This protects you from a contractor inventing work for themselves — and it is the law in every US jurisdiction that licenses mold work.
Worth knowing right now
Texas law changed on 1 Sep 2025: S.B. 1255 removed “mycotoxins” from the statutory mold definition and repealed the supervised-employee exemption (§1958.102(b)) — assisting employees now need their own credential. TDLR's rules (16 TAC ch. 78) have not yet been conformed and are under review.
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