Category
Texas Law & Licensing
What Texas requires: who needs a license, who is exempt, how the work must be done, and the paperwork.
Credentials
- What the S520 expects of a mold remediator The S520 starts with the law: remediators "shall" hold whatever licenses federal, state and local rules require. That can include a local business license, a general... Best practice
- Texas mold licenses at a glance Texas licenses mold work through the Texas Department of Licensing and Regulation (TDLR). Assessment and remediation are separate trades. Assessment: the Mold... Texas law
- Mold Assessment Consultants and Technicians A Mold Assessment Consultant must be at least 18, pass a criminal history check, carry $1 million in liability insurance, complete the 40-hour consultant course and... Texas law
- Mold Remediation Contractors and Workers A Mold Remediation Contractor must meet one of four education-and-experience routes (the same as a consultant's, except that general-contracting experience also... Texas law
- Mold analysis laboratories Any lab that analyzes mold samples for Texas work must hold a TDLR mold analysis laboratory license. A lab qualifies through AIHA's Environmental Microbiology... Texas law
- Training, exams, continuing education and renewals Each credential needs an initial course: 24 hours for technicians and 40 for consultants and contractors, from a TDLR-accredited training provider; 4 hours for... Texas law
- Insurance requirements Licensed mold professionals must carry commercial general liability insurance of at least $1 million per occurrence for the whole license term, written by an insurer... Texas law
Exemptions
Work practices
- Assessor and remediator must be independent Texas doesn't allow one license holder to both assess and remediate the same project, and no one may own an interest in both the company that assesses and the company... Texas law
- The Consumer Mold Information Sheet and other duties The licensee overseeing a mold job must make sure the client and the property owner get TDLR's Consumer Mold Information Sheet (CMIS) at first contact or at least one... Texas law
Notifications
Records & ethics
Fees
More on texas law & licensing
- Who regulates mold in Texas, and under what law Texas Occupations Code Chapter 1958 is the statute; 16 TAC Chapter 78 is the rulebook TDLR wrote under it. The statute defines mold assessment and remediation,... Texas law
- How Texas law defines mold, assessment and remediation The statute defines mold as "any living or dead fungi or related products or parts, including spores and hyphae." Mold assessment is inspecting a building for mold,... Texas law
- History: the 2007 DSHS rules (25 TAC Chapter 295) Texas began licensing mold work in 2004 under House Bill 329 (2003). Until 2017 the Department of State Health Services ran the program, and its rules were 25 TAC... Historical
- Contracts, communication and project records Chapter 7 treats paperwork as part of the job. R520 recommends a written contract that names who pays and how, what happens on default or termination, whether an... Best practice
- When a job is limited: complications and conflicts Chapter 9 gives names to the things that get in the way of a job done by the book. A limitation is a restriction imposed by others, such as a budget cap, a ban on... Best practice
Questions & answers
What is a Texas MAC and why does it matter?
A Texas Mold Assessment Consultant (MAC) is a licensed professional under the Texas Department of Licensing and Regulation (TDLR). Texas is one of the few states that requires separate licensing for mold assessment and mold remediation — and critically, the law prohibits the same company from performing both assessment and remediation on the same job. This separation protects homeowners: it means the person inspecting and recommending work has no financial stake in how much remediation gets done. When you hire a MAC independently, you get an unbiased assessment of what actually needs to be done — not an upsell.
Based on: Texas Occupations Code Chapter 1958; 16 TAC Chapter 78
What is TMARR and why does it matter to Texas homeowners?
TMARR stands for Texas Mold Assessment and Remediation Rules, codified in Title 16 of the Texas Administrative Code, Chapter 78. These are the regulations that govern how mold assessment and remediation must be conducted in Texas, and they carry the force of law. For homeowners, TMARR matters because it sets the minimum standards that any licensed mold professional must follow. It defines what must be in an assessment report, what a work plan must contain, how remediation must be conducted, what containment procedures are required, when clearance testing is mandatory, and what must be in the final Certificate of Mold Damage Remediation. TMARR also establishes the separation between assessment and remediation — making it illegal for one company to control both sides of the process on the same project.
Based on: 16 TAC Chapter 78 (TMARR); Texas Occupations Code Chapter 1958