Texas mold disclosure is one of the parts of a Houston home sale most sellers underestimate. Houston’s humidity, hurricane history, and slab foundation construction mean a meaningful share of homes have had some kind of moisture issue at some point. State law does not require sellers to test for mold they don’t know about, but it does require them to disclose what they do know, and it builds a specific certificate disclosure into the standard real estate contract. Get the disclosure right and the transaction closes cleanly. Get it wrong and you can face a lawsuit years after the sale.
Important: This is general information, not legal advice. Real estate disclosure rules apply differently depending on the specific facts of your situation. If you’re unsure what to disclose, consult a Texas real estate attorney before signing the Seller’s Disclosure Notice.
What Does Texas Law Require Sellers to Disclose About Mold?
Texas mold disclosure operates through two main legal hooks: the general Seller’s Disclosure Notice under Texas Property Code §5.008, and the Certificate of Mold Remediation rule under Texas Occupations Code §1958.154.
Under §5.008, sellers of residential real property must provide a written disclosure of known material defects. The standard Seller’s Disclosure Notice form asks directly about water damage, water penetration, and toxic mold. If a seller knows about a current mold issue, past mold remediation, or moisture conditions that have led to mold, those must be marked on the notice and explained.
Under §1958.154, any mold remediation performed on the property in the past five years that was significant enough to require a Certificate of Mold Remediation must be disclosed to the buyer. The certificate itself, not just a mention of it, must be provided.
The key word in both statutes is “known.” Texas does not require sellers to hire inspectors and search for mold they have no awareness of. But once a seller has knowledge of a mold issue, by any source, the obligation to disclose attaches. That includes information from a prior home inspection, a contractor’s invoice, an insurance claim, or even a verbal mention from a neighbor.
The TREC Contract’s Mold Disclosure Clause (Paragraph 6E(11))
The current Texas Real Estate Commission One to Four Family Residential Contract (Resale), form TREC No. 20-18, includes mold disclosure directly inside the contract. Paragraph 6E(11) of the official TREC form requires the seller to deliver to the buyer each Certificate of Mold Damage Remediation issued under §1958.154 of the Texas Occupations Code during the five years preceding the sale.
This addition, which became mandatory for use starting January 3, 2025, means the certificate disclosure is now a contract obligation, not just a statutory one. A seller who fails to provide the certificate may be in breach of contract, not only in violation of the disclosure statute. That distinction matters because it gives the buyer additional remedies, including the right to terminate the contract under certain conditions and to pursue contractual damages.
Real estate agents handling Houston transactions should be checking this paragraph against the seller’s records before listing. If a Certificate of Mold Remediation was issued in the past five years, it goes in the file from day one. If no certificate was issued because the mold area was under the 25 square foot threshold, the disclosure shifts to the Seller’s Disclosure Notice instead.
What Is a Certificate of Mold Remediation, and When Do You Need One?
A Certificate of Mold Damage Remediation is a Texas-specific document issued by a TDLR-licensed mold assessor after they verify that a mold remediation project was completed properly. The certificate confirms the affected area was remediated according to state standards and the underlying moisture problem was addressed.
Texas law requires a licensed mold assessor and licensed mold remediation contractor when the affected mold area is 25 contiguous square feet or larger. Below that threshold, licensed remediation is not required and a Certificate of Mold Remediation is not issued. This is why some sellers say “I had mold cleaned but there’s no certificate.” They’re typically describing a small area that did not trigger the licensing requirement.
For mold areas above the 25 square foot threshold, the certificate is essential. It does two things at once for a future seller:
- It satisfies the §1958.154 disclosure requirement when the home eventually sells
- It documents that the work was done by licensed professionals to state standards, which gives buyers confidence and helps preserve property value
Sellers who paid for remediation but never received a CMR, even though the work was clearly above the 25 square foot threshold, should request documentation from the original remediation contractor. Missing paperwork is one of the most common audit issues in mold-related real estate disputes.
Do I Have to Disclose Mold If It Was Cleaned Years Ago?
Yes, in most cases. The Texas Property Code §5.008 disclosure obligation applies to known material defects, and past mold is generally considered material. Even if the mold was professionally remediated and the area has shown no problems since, the historical condition remains a disclosable fact.
The five-year window in §1958.154 applies specifically to the Certificate of Mold Remediation requirement. Outside that window, the certificate itself may no longer need to be furnished, but the underlying knowledge of a prior mold issue still belongs on the Seller’s Disclosure Notice. Texas courts have generally favored buyers when sellers tried to argue that older mold history was no longer disclosable.
The cleanest approach is to disclose any known mold history, regardless of how long ago, and to attach supporting documentation showing the issue was properly addressed. That kind of thorough disclosure typically helps the sale rather than hurting it, because buyers see a documented and resolved problem rather than wondering what else they don’t know.
What Happens If I Don’t Disclose Mold?
Failing to disclose known mold in a Texas home sale can lead to several different legal consequences:
- Breach of contract. If the TREC contract was used and Paragraph 6E(11) applied, failure to deliver a required Certificate of Mold Remediation is a contract breach. The buyer may have remedies including specific performance, damages, or termination depending on timing.
- Violation of §5.008. A seller who knew about mold and did not mark it on the Seller’s Disclosure Notice may be liable for the buyer’s damages tied to that nondisclosure, including remediation costs and diminished property value.
- Deceptive Trade Practices Act claims. The Texas DTPA allows buyers to sue for knowing or intentional concealment of material defects, with potential treble damages and attorney’s fees.
- Contract rescission. In extreme cases, a court may order the sale unwound entirely, with the seller returning the purchase price and the buyer returning the property.
- Reputational and future-sale issues. A litigated mold disclosure case enters public record and can complicate future real estate dealings.
The financial exposure on a nondisclosure case routinely exceeds what a proactive pre-listing inspection and proper disclosure would have cost. Sellers who think they’re protecting the sale by staying silent typically end up paying more later.
Should I Get a Pre-Listing Mold Inspection?
A pre-listing mold inspection is a smart move for any Houston seller whose home has had water damage, plumbing leaks, roof issues, hurricane impact, or any history of musty smells or visible moisture. The inspection produces a documented baseline that the seller can use in disclosure, and it surfaces hidden issues before the buyer’s inspector finds them.
Houston is the kind of climate where this matters more than most. Hurricane Harvey in 2017, repeated tropical storms, and decades of slab leak prevalence mean a substantial portion of Houston housing stock has at least one historical moisture event. A pre-listing assessment from a licensed mold assessor gives the seller a clear answer on whether any of that history is still showing up in the home.
The mold inspection process for a pre-listing assessment typically includes a visual inspection of the entire interior, moisture readings on key surfaces, and air sampling from the main living areas plus an outdoor control sample. The lab report comes back in three to five business days and tells the seller exactly what is and isn’t present at the time of testing. That report becomes a powerful piece of supporting documentation when paired with the Seller’s Disclosure Notice.
For buyers worried about the other side of the transaction, our guide for Houston homebuyers walks through what to ask before closing and how to read an inspection report.
Why Independent Testing Matters for Sellers
Sellers who get mold testing done by a remediation company face the same conflict of interest problem buyers do. A company hoping to win cleanup work has a financial reason to find mold or to suggest more aggressive remediation than the actual conditions justify. The reverse is also true. A company that already did remediation on the property has a reason to declare the area clean even if it isn’t.
Independent mold testing avoids both of those problems. Mold Testing Houston operates under TDLR license ACO1245 as a mold assessment company only. We do not perform remediation, and Texas Occupations Code rules prohibit the same license holder from performing both assessment and remediation on the same project. That separation is what makes our reports credible in real estate disclosure contexts. When our pre-listing inspection comes back clean, the seller has a third-party document to attach to disclosure. When it comes back with findings, the seller has a clear scope of work to address before listing rather than getting blindsided by the buyer’s inspection.
If the home is being sold after a prior remediation event, an independent clearance test is often the right move even years later, especially when the original Certificate of Mold Remediation is missing or the original assessor is no longer reachable. A fresh clearance from an independent assessor confirms current condition and gives the buyer documented assurance that the past issue is genuinely resolved.
If you’re preparing a Houston home for sale and want to handle the mold side correctly, call us at 832-838-9387 or schedule a pre-listing mold inspection.
Frequently Asked Questions
Do Texas sellers have to test for mold before selling?
No, Texas law does not require sellers to test for mold they don’t already know about. The disclosure obligation applies only to known mold issues. However, a pre-listing inspection is often a smart investment because it surfaces problems before the buyer’s inspector finds them and gives the seller supporting documentation for the disclosure.
What if I sold the home as-is? Do I still have to disclose mold?
Yes. Selling a property as-is in Texas does not eliminate the disclosure requirement under Texas Property Code §5.008. As-is means the buyer accepts the current condition without warranty for repairs, but it does not give the seller permission to conceal known material defects, including mold.
How long does a seller stay liable for undisclosed mold after closing?
Texas statute of limitations on nondisclosure claims is generally four years for fraud and breach of contract claims, though the clock can start later if the buyer can show they only discovered the issue at a later date. Some claims under the Deceptive Trade Practices Act have a two-year statute of limitations.
What is the 25 contiguous square feet rule for Texas mold remediation?
Texas law requires mold remediation to be performed by a TDLR-licensed contractor when the affected area is 25 contiguous square feet or larger. Below that threshold, the work can be done without licensing, and no Certificate of Mold Remediation is issued. Above the threshold, licensing is required, and the certificate triggers the disclosure obligation under §1958.154.
Does the buyer’s inspector usually find mold I didn’t know about?
Sometimes. A typical home inspector is not a licensed mold assessor and is not authorized to take samples, but they can identify visible mold growth, water staining, and moisture readings that point to a problem. When a buyer’s inspector flags something mold-related, the buyer often follows up with a licensed mold assessor. This is the moment when undisclosed prior mold history typically surfaces.
How much does a pre-listing mold inspection cost in Houston?
Mold Testing Houston offers transparent flat-rate pricing starting at $550 for a standard residential assessment. The full pricing is on our pricing page. The cost is the same whether mold is found or not.
Get a Pre-Listing Mold Inspection in Houston
If you’re preparing to sell a Houston home and want to handle the mold disclosure side correctly from the start, Mold Testing Houston provides the independent pre-listing assessment that protects sellers in disclosure. We have served Houston since 2017 under TDLR license ACO1245. We perform mold inspection and testing only. We do not perform remediation, and our reports are written so a real estate agent, a buyer’s attorney, or a title company can read them without translation.
Call us at 832-838-9387 or schedule your pre-listing inspection to get ahead of the disclosure question before your home goes on the market.
