Texas Mold License: How to Check a TDLR License (2026)

Texas Occupations Code chapter 1958 creates two kinds of license: a mold assessment license and a mold remediation license. Assessment is testing: an inspection, investigation, or survey, writing a remediation protocol, or the collection or analysis of a mold sample. Remediation is removal: the removal, cleaning, sanitizing, demolition, or other treatment of mold.

There are exemptions in § 1958.102. The main ones for homeowners:

• Your own property. Owners and tenants can do mold work on property they own or lease. An owner of residential property with fewer than 10 dwelling units can too.
• Small jobs. Remediation is exempt where the contamination affects less than 25 contiguous square feet in total.

Neither exemption covers a company that does mold work for the public on someone else's property above those limits. And TDLR says that if you hire a licensed remediation contractor, regardless of the size of the area, the contractor must still follow the law and rules.

TDLR's mold program lists seven credentials. The rules for each are in Texas Administrative Code, Title 16, chapter 78.

Table: TDLR mold license types and what each may do.

Technicians, consultants and remediation contractors must pass the state licensing exam before a license is issued. All licensees must carry commercial general liability insurance of not less than $1 million per occurrence, and credentials must be renewed every two years.

Mold assessment technician

A technician can record what they see, take temperature, humidity, and moisture readings, collect samples during an initial assessment, and prepare a mold assessment report. During a post-remediation (clearance) check, a technician may collect samples only when an on-site assessment consultant directs it. A technician can't write a remediation protocol or declare clearance. Applicants must be a high school graduate or hold a GED, complete an approved course and pass the state exam.

Mold assessment consultant

This is the license you want behind any mold testing job that might lead to removal. A consultant can plan surveys, decide where samples are taken, interpret lab results, develop a mold management plan, and prepare mold remediation protocols and evaluate remediation projects. Consultants also complete their part of the Certificate of Mold Damage Remediation. To qualify, an applicant needs one of several combinations of education and experience, ranging from a relevant degree plus at least one year of experience in an allied field to a high school diploma plus at least five years of allied-field experience.

Mold assessment company

A company license is needed when a business employs more than one licensed assessment individual. The company must designate a licensed consultant as its responsible person and may do assessment work only while at least one designated consultant is actively employed.

Mold remediation worker

This is a registration, not a full license. Workers do the hands-on removal but may not work except under the supervision of a licensed remediation contractor.

Mold remediation contractor

The contractor runs the removal job. They write the work plan, which must be given to you at least one calendar day before preparation work begins. Supervision means being on site or reachable by phone within ten minutes and able to arrive within one hour. At the end, the contractor gives the owner a completed Certificate of Mold Damage Remediation.

Mold remediation company

Like the assessment company license, this is for businesses employing more than one licensed or registered person. The company may do remediation only while at least one designated contractor is actively employed.

Mold analysis laboratory

When a licensed assessor sends samples to a lab, the samples must be analyzed by a laboratory licensed under §78.62. Labs qualify through accreditation such as the AIHA Environmental Microbiology Laboratory Accreditation Program (EMLAP) or through analyst credentials, and must cease providing services if they lose accreditation until they comply again.

One company, two sides? Not on your job

A company may hold both assessment and remediation licenses, but Texas law says a license holder may not perform both mold assessment and mold remediation on the same project. Hire a testing company to test and a separate removal company to remove. Read why mold testing and removal must be different companies.

You can check a Texas mold license in two places.

1. Our license check. Our Texas mold license check searches TDLR mold license records for companies and individuals, updated daily, so you can look up a name or license number in one box. Here's how we verify the data.

2. TDLR's own search. TDLR's License Data Search lets you search by license type, license number, name or business name, city, county or ZIP code. It covers active licenses only. If a license isn't found, TDLR says to contact Customer Service at 800-803-9202.

Step by step:

1. Get the names and numbers. Ask for the company's license number and the name of the individual consultant or contractor who will be responsible for your job.
2. Search the company. Confirm it holds the right type: an assessment company for testing, a remediation company for removal.
3. Search the individual. A company license depends on employing a licensed consultant or contractor, so check that person too.
4. Check the expiration date. It should be current through the job.
5. Check discipline. TDLR publishes disciplinary actions you can search.
6. Check on site. Anyone required to be licensed or registered must have a valid department-issued card present at the site during mold work. Ask to see it.

You'll also see license numbers on paperwork. A consultant must sign the protocol cover page with license number and expiration date, and a contractor must do the same on the work plan.

Texas mold credentials must be renewed every two years, and the rule is blunt: "A person shall not perform any mold-related activity with an expired credential." Late renewal costs the licensee additional fees or penalties.

For you, that means:

• Don't let work start. Someone with an expired license can't legally do mold assessment or remediation on a job that requires a license.
• Ask them to renew first. Lapses are sometimes paperwork. If they renew, you can confirm it in TDLR's search, which shows active licenses.
• Think about paperwork. A protocol, clearance report or Certificate of Mold Damage Remediation should come from a licensed person. TDLR says only a licensed remediator is authorized to give a CMDR, and work by unlicensed people doesn't qualify for one. That certificate matters for insurance and for selling your home.

1. "What is your company's TDLR mold license number, and who is the licensed consultant (or contractor) on my job?"
2. "Will you be doing testing or removal on my project?" Under § 1958.155 it can't be both.
3. "Does anyone at your company own part of another company working on this project?" Shared ownership between the tester and remover is not allowed.
4. "Can I see proof of your insurance?" Licensees need $1 million per occurrence in general liability coverage.
5. For testing: "Which licensed lab will analyze the samples?" It must be TDLR-licensed.
6. For removal: "Will you notify TDLR?" Jobs of 25 contiguous square feet or more need notice at least five calendar days before work starts.
7. "Will I get the Consumer Mold Information Sheet?" It's due at least one calendar day before work starts.

Watch for pressure, too. Licensees may not make any representation designed to take advantage of the fears or emotions of the public.

TDLR regulates and licenses persons and companies who inspect and test for mold, but it does not inspect or test homes for mold problems, and cannot make a landlord or property owner clean up mold. If a licensee breaks the rules, you can file a complaint, and you must file within two years of the event. Licensees must put TDLR's contact information on reports, bids, contracts, and bills. Renters with a landlord problem should see mold in your apartment in Texas.

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