Mold assessment or mold remediation: who does what in Texas, and why they must be separate

Two different jobs, in plain terms

Mold assessment is the investigation: an inspection or survey to find out whether there is mold, where the moisture is coming from, how far the damage extends and what needs to be done. Mold remediation is the fix: the removal, cleaning, sanitizing or other treatment of mold and mold-contaminated material. In Texas both are licensed by the Texas Department of Licensing and Regulation, and the state's rules do not allow the same licensee to do both on the same project.

I do the assessment side. I inspect, test and write the report, and when remediation is needed, a separate company does the work. Understanding where one job ends and the other begins helps you hire the right people in the right order, read the paperwork you are handed, and know when the project is genuinely finished.

What an assessment gives you

A good assessment starts with the water, not the mold. I look for the moisture source, take readings to map how far the wet area extends beyond what is visible, and collect samples where they answer a question. Mold spores are present everywhere; the issue is where they have found a surface that stays wet long enough to grow.

Sampling is part of an assessment, not the whole of it. I take samples when they answer a specific question, such as whether hidden growth is likely inside a wall cavity, or when a sale or insurance claim needs laboratory documentation. A stack of lab results without a moisture map does not tell anyone what to remove.

The output is a written report. It names the source where it can be determined, shows the affected materials with readings and photographs, and, when remediation is needed, sets out the scope. Under the Texas rules, that scope takes the form of a mold remediation protocol prepared by a licensed mold assessment consultant. The protocol specifies the estimated quantities and locations of materials to be remediated, the proposed remediation methods and the clearance criteria for each type of area.

• Moisture source identified, where it can be determined
• Map of affected materials, with readings and photos
• Lab results, when sampling added information
• Remediation protocol: quantities, locations, methods and clearance criteria
• A clear statement of what does not need to be removed

What remediation involves

Remediation is the physical work. A licensed mold remediation contractor prepares a work plan, which the Texas rules describe as a document with specific instructions or standard operating procedures for how the project will be performed, following the consultant's protocol. The crew then contains the work area, removes or cleans the affected materials, and dries what remains.

Remediation without fixing the moisture source is a temporary cosmetic job. The plumber, roofer or HVAC technician who stops the water is as much a part of the project as the remediation crew, and a good protocol says so. If the leak is still active, the growth will come back regardless of how carefully the drywall was removed.

Because the remediation contractor is working to someone else's written protocol, you have a yardstick. If the crew finds more damage once a wall is open, the change should be documented and the assessor consulted, rather than the scope quietly growing. In the Dallas area I see this most often after slow leaks behind showers and under kitchen sinks, where the visible stain is a fraction of what is wet inside.

Why Texas keeps the two jobs apart

TDLR states that a licensee is not allowed to conduct both mold assessment and mold remediation activities on the same project, with a narrow exception for school district employees. The reasoning is simple. The person who decides how much material has to come out should not be the person who is paid to take it out.

This protects you in both directions. An independent assessor has no reason to inflate the scope, and the remediation company is held to a written protocol rather than to its own estimate of the job. It also means that when a company offers a free mold inspection and then quotes you the remediation, you should ask how that fits the rule. My guide to checking a Texas mold assessor's license covers the questions to ask.

The paperwork chain from first visit to final sign-off

On a licensed project the documents follow a set order, and knowing it helps you see whether anything has been skipped. Before any mold work begins, the licensee must give you TDLR's Consumer Mold Information Sheet, which explains who must be licensed and how to reach the agency.

• Assessment: inspection, moisture mapping and any sampling, by a licensed assessor
• Protocol: written by a licensed mold assessment consultant
• Work plan: written by the licensed remediation contractor, following the protocol
• Remediation: containment, removal or cleaning, and drying, with the moisture source fixed
• Post-remediation assessment: the consultant checks whether the project achieved clearance
• Certificate of Mold Damage Remediation: issued by the licensed remediator

Small problems that may need neither

Not every patch of mold calls for this whole process. Texas does not require a license to remediate an area where mold affects less than 25 contiguous square feet, and TDLR notes that a homeowner or building owner can, in some circumstances, do their own remediation. The EPA's homeowner guidance suggests most people can handle a moldy area of less than about 10 square feet themselves, provided the moisture problem is fixed.

The size of the visible patch is only part of the picture, though. A small spot on the outside of a wall can sit on top of a much larger wet area inside it, and that is exactly what an assessment is for. If the source is obvious and the area is small and on a hard surface, clean it and fix the moisture. If the source is unknown, the growth keeps returning, or the material is drywall or wood that may be wet behind the surface, an assessment first will tell you how big the job really is.

After a flood or a burst pipe, what comes first

Water damage and mold are related but not the same project. When there is standing water, the first call is to stop the water and start drying, because the EPA advises drying water-damaged areas within 24 to 48 hours to prevent mold growth. That emergency drying is restoration work, and this guide to the first 48 hours after finding standing water explains how it goes.

Assessment comes in when there is reason to think mold has started or the water reached places that cannot be dried quickly: inside walls, under flooring, in insulation. At that point a protocol defines what has to be removed rather than dried, and the remediation follows it. Restoration companies, such as Alison Zelaya at Servpro of Park Cities, often bring in an independent assessor for exactly this reason, so the scope is documented by someone with no stake in it.

Questions to ask each side

Asking the same few questions of both companies keeps the project honest and makes sure nothing falls between them.

• Assessor: are you licensed as a consultant, so you can write the protocol?
• Assessor: will you do the post-remediation assessment when the work is finished?
• Remediator: will your work plan follow the consultant's protocol, and will I get a copy?
• Remediator: who is fixing the moisture source, and when?
• Both: are you affiliated in any way, and has either of you worked on this project in another role?

Mix-ups that cost homeowners money

The first is letting the remediation company define its own scope. Without a protocol from an independent consultant, there is no fixed measure of what the job is, and the scope can grow once walls are open. The second is skipping the final check. A clean-looking room is not proof the project passed; a post-remediation assessment is. TDLR notes that a consultant who did not prepare the protocol in advance cannot declare that the project achieved clearance, which is one more reason to involve the assessor from the start.

The third is paying for species identification before anything else. TDLR's guidance is that testing to determine what kind of mold is present is not required before remediation or cleaning. What matters for the scope is where the moisture went and which materials are affected, and that is the part of an assessment worth paying for.

The fourth is closing walls too soon. Once new drywall and paint go up, nobody can see whether the framing behind them was dry and clean. The time to check is while the cavity is still open, before the rebuild starts.

Where I fit, and what to tell me

My role is the assessment at the start and the testing at the end. I find the moisture source, map the damage, take samples where they help and write a report that a remediation company can price and follow. When the work is finished, I come back to test the result; my guide to clearance testing after remediation explains what that last visit checks.

I inspect across Dallas–Fort Worth, Northeast and East Texas and Louisiana, and offer emergency, weekend and holiday appointments, which may carry an additional fee. Tell me what you are seeing, whether there has been a leak or flood, and whether a restoration company or adjuster is already involved, and I will tell you what assessment makes sense and what it costs.

Questions people ask me