Mold Disclosure Laws in Texas: What Sellers Must Tell You (And What They Don't Have To)

Mold Disclosure Laws in Texas. Sellers must disclose mold history and provide remediation certificates. Know the law's gaps before you buy — and how to protect yourself at closing.

Brian Boone

5/21/20263 min read

Mold Disclosure Laws in Texas: What Sellers Must Tell You (And What They Don't Have To)

Buying a home is one of the largest financial decisions most people make. And in Texas, where warm, humid conditions make mold a common property concern, understanding what sellers are legally required to disclose — and what they're not — can make the difference between a sound investment and an expensive surprise.

Texas has some of the most structured mold-related real estate laws in the country. But even robust laws have gaps, and knowing where those gaps are will help you ask the right questions and take the right protective steps.

What Texas Law Requires Sellers to Disclose

Texas sellers are required to complete a Seller's Disclosure Notice, a standardized form from the Texas Real Estate Commission (TREC) that covers known material defects. This form specifically asks about water damage, water penetration, and "toxic mold." If a seller is aware of any mold issue — current or previously remediated — they must check "Yes" and provide an explanation.

Critically, Texas Occupations Code Section 1958.154 requires sellers to provide buyers with a copy of any Certificate of Mold Remediation (CMR) issued for the property within the five years preceding the sale. Updated TREC contract forms, mandatory since January 2025, now explicitly include this requirement in Paragraph 6.E.1. A seller cannot simply note that mold was remediated — they must hand over the actual documentation.

Failure to disclose can carry serious legal consequences. Buyers who discover undisclosed mold after closing may have grounds for claims including fraudulent misrepresentation, concealment, and even rescission of the sale.

What Sellers Don't Have to Disclose

Here is where the law has a meaningful limitation: sellers are only required to disclose what they know. Texas law does not require sellers to investigate unknown conditions or commission inspections to find problems they're unaware of. A seller who genuinely didn't know about mold hidden inside a wall cavity behind their bathroom shower has no legal obligation to disclose it.

This is an important distinction. It means that even with full legal compliance, a buyer can purchase a home with active mold problems that were never disclosed — simply because the seller wasn't aware of them. It also means that the phrase "I didn't know" can be used as a legal defense, even when experienced eyes might have suspected a problem.

The Role of the Certificate of Mold Remediation

The Certificate of Mold Remediation (CMR) is a document that licensed mold remediators in Texas must provide to property owners within ten days of completing remediation work. It confirms that mold was found, what was done, and that remediation was completed according to the approved protocol. A companion document from the mold assessor — the post-remediation assessment — confirms that cleanup was successful.

If a seller provides you with CMR documents, review them carefully. They should include the scope of work, the areas affected, and a post-remediation clearance report. If a seller tells you mold was remediated but cannot produce a CMR, that is a significant red flag — it may mean the work was done without a licensed contractor, without proper documentation, or not at all.

What Smart Buyers Should Do

The disclosure system in Texas is built around what sellers know and choose to share. A proactive buyer should not rely on that system alone. Here's what we recommend:

• Request all CMRs and any related assessment reports as part of your due diligence. Don't accept verbal assurances.

• Schedule an independent mold inspection and air quality assessment before closing. A standard home inspection does not include mold testing.

• Pay attention to past flooding. Ask specifically whether the property flooded during any major events, including Harvey (2017) and other major storms. This is not always on the disclosure form but can be highly relevant.

• Use mold findings as a negotiation tool. If testing reveals mold, buyers may be able to negotiate remediation costs, a price reduction, or withdrawal from the contract entirely.