The Texas Mold Cleanup Rule Every Dallas Homeowner Should Know: The 25-Square-Foot Line

If you spot a patch of mold after a Dallas storm or a slow leak under the sink, your first question is usually simple: can I just clean this, or do I need to call in a specialist? In Texas, the answer hinges on a specific number written into state rules. Understanding that number protects your home, your wallet, and you from hiring the wrong help.

What the 25-Square-Foot Threshold Actually Means

Texas regulates mold remediation through the Texas Department of Licensing and Regulation (TDLR). State rules draw a clear line: mold work that covers a total surface area of less than 25 contiguous square feet falls under an exemption and does not require a TDLR mold remediation license. Once a mold problem reaches or exceeds 25 contiguous square feet, it is considered large-scale work that legally must be handled by a TDLR-licensed mold remediation contractor.

"Contiguous" is the word that trips people up. It means a connected, continuous area of mold growth. Picture taping off the visible mold and the material it has spread across. If that connected patch is smaller than a 5-foot-by-5-foot square, you are in small-area territory. If two small spots sit on opposite sides of a room and neither is connected, you measure them separately rather than adding them together.

This is not a Go Green Restoration policy. It is the framework the state uses, and reputable companies stay firmly inside their lane because of it.

What Go Green Restoration Can Do (and What We Can't)

We are honest about our scope. Go Green Restoration is not a TDLR-licensed mold remediation company, so we do not perform full mold remediation, and we never claim to "remove all the mold" from a house. What we can do is small-area cleanup that falls under the TDLR exemption: connected mold growth measuring less than 25 contiguous square feet.

That covers a surprising number of real-world situations in North Texas homes, such as:

• A patch of surface mold on drywall behind a leaking supply line in an Oak Cliff bungalow
• Mildew-type growth around a window or on baseboard trim after high summer humidity
• A small bloom under a cabinet following a minor pipe drip in an older Lakewood home

When we handle these, we work as EPA Lead-Safe certified, IICRC-certified professionals. That matters in Dallas, where many homes in neighborhoods like Bishop Arts and parts of Lake Highlands predate modern lead-paint rules. Our certified methods focus on containing the area, cleaning affected surfaces correctly, drying materials, and tackling the moisture source so the problem does not simply return. We are bonded and insured, so you have protection on every job we touch.

If we arrive and the mold clearly exceeds the 25-square-foot threshold, or if hidden growth suggests it does, we will tell you plainly and gladly refer you to a TDLR-licensed mold remediation contractor. We would rather point you to the right specialist than overstep what we are permitted to do.

How to Tell Which Situation You Have

You do not need to be an expert to make a rough first call. Grab a tape measure and look at the connected area of visible growth. A square roughly 5 feet on each side equals 25 square feet, so anything noticeably smaller than that single connected patch is likely small-area cleanup.

A few warning signs point toward the licensed-remediation category, even when the visible patch looks small. If mold keeps reappearing after cleaning, if you smell a persistent musty odor with no obvious source, or if growth follows a major water event like flash flooding or a burst pipe during a winter freeze, there is a good chance moisture and mold have spread inside wall cavities, under flooring, or above ceilings. Hidden growth often dwarfs what you can see.

North Texas weather makes this worth taking seriously. Violent spring thunderstorms and large hail open roofs and let water in. High summer humidity feeds growth that started small. Aging infrastructure in older Dallas neighborhoods drives sewer backups and slow pipe failures that soak materials for days before anyone notices. By the time you see the mold, the wet area behind it may already be larger than the exemption allows.

When you are unsure, the safest move is an honest inspection rather than a guess. We will measure the affected area, identify the moisture source, and tell you which category you fall into before any work begins. If it is a small-area job we are certified to handle, we will take care of it the right way. If it is bigger, you will leave the conversation knowing exactly what kind of licensed help to hire.

Talk to Go Green Restoration

Not sure whether your mold is a quick cleanup or a job for a licensed remediator? Let our IICRC- and EPA Lead-Safe certified team take a look and give you a straight answer. Call Go Green Restoration at (469) 727-3217 to schedule an inspection across the Dallas-Fort Worth metroplex, and we will guide you to the correct next step every time.