Selling a Houston House With Mold

Houston is humid, warm and prone to water getting where it should not. Mold here is not an exotic problem, it is a consequence of the climate meeting a roof leak, a failed supply line or a slab that took water in a storm.

Sellers nonetheless treat it as shameful, hide it, and then lose a contract when a buyer's inspector opens a cupboard. This piece sets out what the rules actually require, what a buyer will ask for, and how to make a mold history cost you the repair rather than the sale. It is general information and not legal advice.

The 25 Square Foot Line

Texas regulates mold work through the Texas Department of Licensing and Regulation, which took the program over from the health department in November 2017. The rules turn on a single measurement.

Where the mold contaminates less than 25 contiguous square feet of surface, the licensing requirements do not apply. You can clean it yourself, or have a general contractor deal with it, and there is no notification obligation.

At 25 contiguous square feet or more, the picture changes. A licensed mold assessment consultant prepares a remediation protocol, a licensed mold remediation contractor carries out the work to that protocol, and the project is notified to the state.

Two words in that threshold do a lot of work. Contiguous means a connected area, so three separate patches of eight square feet are not automatically thirty. And surface means what is actually contaminated, which includes what is behind the drywall rather than only the stain you can see. Owners routinely underestimate this, because visible growth is often the smallest part of the affected area.

The Certificate, and Why It Is Worth Having

When a licensed remediation is completed, the mold assessor must provide the property owner with a Certificate of Mold Damage Remediation, on a Texas Department of Insurance form, within ten days of the project finishing. It records that the contamination identified in the protocol has been remediated.

That document is the single most valuable thing you can hold when selling a house with a mold history. It converts an open question into a closed one.

It matters to three separate parties. A buyer wants evidence the problem was dealt with properly rather than painted over. A buyer's lender, on any property where a report mentions mold, wants to see the issue resolved. And an insurer looks at prior water and mold claims when pricing cover, which affects what the buyer can afford monthly.

If a remediation was done to your house before you owned it, the certificate may exist and you may not have it. It is worth asking the previous owner or the remediation company, because a document you cannot produce is worth nothing at the negotiating table.

What You Have to Tell a Buyer

The statutory seller's disclosure notice under Texas Property Code section 5.008 asks direct questions that reach mold from several angles: previous flooding, water penetration, previous structural or roof repair, and known defects.

The standard is what you actually know. You are not required to commission an investigation or to guess at what might be inside a wall. You are required not to conceal what you do know, and that includes a leak you had repaired, a patch you painted over, and a remediation you paid for.

The commercial argument for full disclosure is stronger than the legal one. A buyer who learns about a past mold problem from you, alongside the invoice and the certificate, treats it as a solved issue. A buyer whose inspector finds evidence you did not mention treats every other answer on your disclosure as suspect, and either walks or renegotiates hard.

Fix the Water, Not Just the Mold

This is the practical point that saves the most money and is most often skipped.

Mold is a symptom. It grows because water is arriving from somewhere: a roof at the end of its life, a window seal, a plumbing joint, a condensate line, a slab, or humidity from a crawl space. Removing the growth without removing the water buys you a few months.

A buyer's inspector knows this and looks for it. Fresh paint on one patch of a ceiling, a newly replaced section of baseboard, a dehumidifier running in a cupboard during a viewing. Each of those reads as a repair that treated the symptom, and each invites the question of what else was done that way.

Should You Remediate Before Selling?

It depends on which of two situations you are in, and the answer differs sharply.

A contained, identified problem with a known water source. Usually worth fixing. The work is a defined cost, the certificate or the invoices close the question, and you sell a house with a resolved history rather than an open one. Buyers discount an unknown by more than a known.

A large, spreading or structural problem. Frequently not worth it. Once remediation involves opening walls across multiple rooms, the cost becomes open-ended, the timetable slips, and you are funding a project on a house you are leaving. That is the point at which selling as-is to a buyer who prices the work is the more rational route.

The dividing line is usually whether you can get a firm quote. A remediation contractor who will give you a fixed price for a defined scope is describing a manageable job. One who will not, because they do not know what is behind the wall, is telling you something important.

Insurance, and the Trap in a Paid Claim

Standard Texas homeowner policies treat mold in particular ways, and cover for mold damage is often limited or excluded unless it results from a covered sudden event.

The trap is the same one that catches sellers after any storm claim: money paid and not fully spent on the repair. It is entirely legal to settle a claim and use the money elsewhere, and people do it when they are short. What it produces is a claims history showing water damage at the property, with no corresponding evidence of remediation.

A buyer's insurer sees that pattern and prices for it, or declines. That can be the point at which a financed sale stops being possible, and it happens weeks in, after the property has been off the market.

If that describes your situation, say so early. It does not stop us buying and it is factored into the offer rather than treated as a reason to decline.

What to Do This Week

Find the paperwork, and while you are at it pull the rest of your property records. Any remediation invoice, any certificate, any plumbing or roofing repair that stopped the water. Put it in one folder.

Establish whether the water source is genuinely fixed. If you are not sure, a plumber or roofer looking at the specific area costs little and answers the question a buyer will ask.

Measure honestly. If the affected area is at or above 25 contiguous square feet, licensed people need to be involved and a certificate becomes available to you, which is a benefit rather than only a cost.

Then decide. A documented, fixed, modest problem belongs on a listing. An open-ended one on a house you are already leaving usually belongs with a buyer who prices it and takes it on.