Understanding the Texas Mold Law: What Homeowners & Contractors Should Know

Mold is more than just a household nuisance, it’s a regulated issue in the state of Texas. To protect both property owners and consumers, the Texas Mold Law (Texas Occupations Code, Chapter 1958) and the Texas Mold Assessors and Remediators Rules (TMARR) outline strict requirements for mold inspections, assessments, and remediation.

For homeowners, this law ensures protection during real estate transactions and insurance claims. For contractors, it sets clear licensing and documentation requirements. In this post, NTX Enviro breaks down what every homeowner and contractor should know about the Texas Mold Law.

Why Texas Regulates Mold

Texas regulates the mold industry to protect public health, ensure competent professional practice, prevent consumer fraud, and standardize assessment and remediation procedures. These regulations provide clear legal boundaries for what work requires licensing, ensure mold is properly identified and remediated, and protect homeowners, tenants, and insurers from the risks associated with improper mold work.

Key Provisions of the Texas Mold Law

Licensing Requirements

Anyone performing mold assessment or remediation on areas 25 contiguous square feet or larger must be licensed by the Texas Department of Licensing and Regulation (TDLR).

• Mold Assessment Consultant (MAC): Conducts inspections, collects samples, writes protocols, and documents clearance.
• Mold Remediation Contractor (MRC): Performs the remediation work based on the consultant’s protocol.

Homeowners can remediate their own homes without a license, but if they hire someone else and the affected area exceeds the 25 contiguous sq. exemption, that person must be licensed.

2. The 25 Contiguous Square Foot Rule

• Under 25 contiguous square feet: No license required for remediation.
• Over 25 contiguous square feet: Licensed professionals must be involved.

👉 Understanding the 25 Contiguous Square Feet Rule

3. Certificate of Mold Damage Remediation (CMDR)

• Issued after remediation is completed and verified.
• Provides legal proof that the mold issue was addressed properly.
• Protects property value during insurance claims and real estate transactions.

👉 What Every Homebuyer Should Know About Mold Before Closing

4. Disclosure Requirements

• Contractors must provide homeowners with written information about the mold law before beginning remediation.
• This ensures transparency and consumer awareness.

This ensures transparency and consumer awareness.

What Homeowners Need to Know

Protecting Your Property Value

If you plan to sell your home, a CMDR is essential. Without it, buyers may hesitate or demand lower prices due to concerns about past mold problems.

When You Don’t Need a License

• Cleaning small areas (under 25 sq. ft.) yourself.
• Hiring a handyman for very minor repairs that don’t cross the exemption threshold.

When You Do Need a License

• Any remediation project larger than 25 contiguous sq. ft. being conducted by a hired individual/company.
• When your insurance company requires professional documentation.
• If mold is found during a real estate transaction.

The Risk of Skipping a Licensed Professional

• Potential insurance denial for future mold-related claims.
• No legal protection during property sales.
• Higher risk of cross-contamination and health hazards.

What Contractors Need to Know

Licensing Compliance

Operating without the proper license can lead to:

• Fines and penalties from TDLR.
• Voided insurance coverage.
• Legal disputes with clients.

Following Protocols

Mold Remediation Contractors must follow the remediation protocol written by a licensed Mold Assessment Consultant (MAC). Deviating from it can result in failed clearance and regulatory violations.

Documentation

Licensed contractors are required to:

• Provide homeowners with a Consumer Mold Information Sheet (CMIS).
• Complete and deliver the CMDR once remediation is finished.

Schedule a Professional Mold Inspection with NTX Enviro Today

Why Mold Inspections Are Essential Under Texas Law

Mold inspections aren’t just for homeowners worried about odors or stains, they’re a legal safeguard.

• Insurance: Many insurers require inspection reports and CMDRs for claims.
• Real Estate: Buyers and sellers rely on inspections to ensure properties are safe and compliant.
• Health Protection: Inspections confirm whether mold is present, even in hidden areas like HVAC systems, attics, or behind walls.

Common Misunderstandings About the Law

“I can hire anyone to clean mold.” → Not true for areas larger than 25 contiguous sq. ft.

“If I don’t see mold, I don’t need an inspection.” → Hidden mold is common and often requires testing.

“The CMDR isn’t necessary.” → Skipping this certificate can hurt property value and complicate future transactions.

The Texas Mold Law exists to protect homeowners, contractors, and future buyers. By requiring licensed professionals for projects larger than 25 contiguous sq. ft., the law ensures that mold problems are properly addressed and documented.

For homeowners, understanding the rules helps protect property value and health. For contractors, compliance avoids costly penalties and ensures credibility.

Dennis Butts is a Texas licensed Mold Assessment Consultant and principal of NTX Enviro Consulting Services, providing mold inspections, remediation protocols, and post remediation verification services throughout North Texas.

Need help navigating the Texas Mold Law?

NTX Enviro provides professional mold inspections and moisture evaluations for homeowners throughout North Texas.