You’ve found mold. Before you call anyone, it helps to know the one number Texas law uses to decide whether the person removing it needs a mold license: 25 contiguous square feet.
What the law says
“A person is not required to be licensed under this chapter to perform mold remediation in an area in which the mold contamination affects a total surface area for the project of less than 25 contiguous square feet.”
Read that the other way around: once the mold contamination for the project covers 25 contiguous square feet or more, the person doing the remediation needs to be licensed.
Three words that matter
- Contiguous means one continuous area. Picture a single patch, not separate spots added together.
- Total surface area means the measurement covers the whole affected surface, not just the part you can see from one angle.
- For the project means the line is drawn for the job as a whole, not per wall or per room.
For scale, 25 square feet is a patch about 5 feet by 5 feet.
When you can’t tell how big it is
Most people find mold through a smell or a small visible spot. What you can see isn’t always the whole area. If you don’t know how far it goes, you don’t yet know which side of the line you’re on — and that’s exactly what a mold assessment is for.
A licensed mold assessment company (an inspector) can tell you how large the affected area is before anyone starts removing materials. In Texas the inspector can’t also do the cleanup on the same project, so their measurement isn’t tied to selling you the work. More on why that matters.
Where reviewers found mold
From our own analysis of Google reviews of Texas mold companies, these are the parts of the home that came up most:
- HVAC & ducts153
- Bathroom91
- Whole house82
- Walls & drywall70
- Kitchen63
- Attic30
- Crawlspace19
- Ceiling18
A review can mention more than one place. Counts are reviews, summed across 253 companies.
Bathrooms, kitchens and walls lead the list.
Under 25 square feet: no license required — but you still choose who does it
Below the line, Texas doesn’t require a license for the remediation. You can still hire a licensed company if you prefer: on every profile we show the company’s Texas license number and expiry date, with a link to check it on the state’s own site.
At 25 square feet or more
Use a licensed mold remediation company. When the job is done, the law entitles you to a certificate of mold remediation within 10 days — see Texas mold law for the exact wording.
Find licensed companies near you
We list companies with a current Texas mold remediation license, with their license numbers and what Google reviewers say about their mold work — for example licensed mold remediation in Houston and remediation companies across Dallas and Fort Worth. Austin, San Antonio and El Paso have their own pages too, linked from the menu.
This guide explains the law in plain English and isn’t legal advice.