Texas mold remediation license rules

What the law says

Texas licenses mold assessment and mold remediation under Texas Occupations Code, chapter 1958 (Mold Assessors and Remediators). The trigger is 25 contiguous square feet or more. The text (Tex. Occ. Code § 1958.102(c)): “a total surface area for the project of less than 25 contiguous square feet”.

Measured against federal guidance, that is 2.5 times EPA's 10 square foot homeowner line, so a 15 square foot patch is past EPA's line but still outside licensing in Texas. EPA's remediation guide moves from limited containment to full containment above 100 square feet; Texas law does not change the license requirement at that size.

Worked check: 24 sq ft is below the line (EPA medium category), 25 sq ft is licensed work (EPA medium category) and 100 sq ft is licensed work (EPA medium category). Arithmetic on Angi's published $10–$25 per-square-foot mold rate puts the first licensed size at about $250–$625.

Assessor and remediator are kept apart: “A license holder may not perform both mold assessment and mold remediation on the same project” (Tex. Occ. Code § 1958.155(a)).

After mold remediation is finished, the license holder must give the property owner a certificate of mold remediation no later than the 10th day after completion (§ 1958.154(a)); the commissioner of insurance writes the rules for the certificate (§ 1958.154(d)).

Who does not need a license

• An owner or tenant (or managing agent or employee) working on property they own or lease, unless the work is offered to the public or the contamination affects 25 contiguous square feet or more (§ 1958.102(a)).
• An owner of residential property with fewer than 10 dwelling units, unless the work is offered to the public (§ 1958.102(e)).
• A person who built or improved a one- or two-family dwelling, for work done with that construction or a related repair (§ 1958.102(d)).
• An employee of a license holder while supervised under the board's rules (§ 1958.102(b)).

Compared with the other jurisdictions on this site: Florida draws the line at more than 10 square feet, New York draws the line at more than 10 square feet, Louisiana draws the line at jobs valued over $7,500 and the District of Columbia draws the line at a contamination level set by regulation.

Sources: Tex. Occ. Code § 1958.102 (Exemptions), statute text via Texas Public Law; official text at statutes.capitol.texas.gov; Tex. Occ. Code chapter 1958 (sections 1958.101, 1958.154, 1958.155), Justia; Texas Constitution and Statutes (official), Occupations Code chapter 1958 · last checked October 20, 2026.

Before hiring

The free check is the state licensing board's public license lookup: confirm the company holds the license the statute names before work starts. EPA's homeowner guidance also suggests checking references and asking the contractor to follow EPA's remediation guide or the guidelines of professional bodies such as ACGIH or IICRC. Cost ranges for the work itself are on the mold removal cost pages.