How mold removal is done in Dallas homes, and what Texas TDLR rules require once growth covers 25 contiguous square feet.
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Mold remediation means taking out the growth, taking out whatever stayed wet long enough to feed it, and drying what is left. In Texas, an affected area of 25 contiguous square feet or more is licensed work: a TDLR-licensed assessor writes the protocol and a separate licensed contractor performs the removal. Dallas Water Damage Restoration takes calls across Dallas County 24/7.
Deal with the water first. If something is still leaking, close the fixture valve or the main valve at your street-side meter box, and leave box fans and the air handler switched off until somebody has looked at the room, because blowing air through growth only moves it around the house. Mold is a moisture problem wearing a stain.
Around Dallas, that moisture arrives from one of three directions. It drips down from an attic air handler or a hail-bruised roof, rises through a slab-on-grade floor where an under-slab line is seeping, or walks in the front door during a cloudburst. Basements are rare here, so growth usually shows along the bottom few inches of drywall, under carpet pad lying on warm concrete, inside cabinet toe kicks and on the attic side of a ceiling.
Texas is one of the states that licenses this work, which changes how the job is organized. The Texas Department of Licensing and Regulation regulates mold assessors and remediators under Occupations Code Chapter 1958 and 16 Texas Administrative Code Chapter 78, and a single license holder may not both assess and remediate the same project. Call (833) 490-5225 to get the water side moving: a local restoration crew is dispatched as fast as one is available, and finding the leak and drying what is wet is the step that makes any mold work hold.
Bleach on a moldy wall hides the problem rather than ending it, and pointing a fan at the room or leaving the air handler running pushes it into the rest of the house. Mold can trigger allergy and asthma symptoms in some people, so keep the room shut and keep anyone with asthma away from it. In a house built before 1980, textured ceilings and old joint compound should be tested before anybody cuts or sands them.
Mold work is priced by the area involved and by how much material has to be removed, and in Texas a licensed job carries two invoices because the assessor and the remediator are different companies. The Dallas water damage cost guide walks through what moves the number.
| Job | Typical range | What it includes |
|---|---|---|
| Mold inspection and assessment by a TDLR-licensed assessor (visual + moisture mapping) | $300–$650 | Includes the written protocol on a licensed job |
| Mold air or surface sample (lab fee, per sample) | $75–$175 | Taken when a lab result would change the plan |
| Small mold remediation (under 25 contiguous sq ft, contained) | $500–$1,800 | One cabinet bay, a ceiling corner, a short run of wall |
| Large mold remediation (25+ contiguous sq ft, full containment, protocol and clearance) | $3,000–$15,000+ | Containment, removal, HEPA cleaning, drying and the certificate |
| Antimicrobial application (per sq ft) | $0.50–$2.00 | On cleaned framing and slab where it fits the material |
| Drywall replacement: hang, tape, texture, paint (per sq ft) | $3–$7 | Rebuild once the readings reach their goal |
Estimates for Dallas County in 2026, not a published price list. The emergency stage, meaning extraction and the drying setup, is explained and approved before work starts, and rebuild work is quoted on its own once the area is dry.
A patch inside one cabinet, a bathroom ceiling corner or a strip of wall under a window. Texas does not require a mold license to remediate an area this size. Two numbers get mixed up constantly, so keep them apart: 25 contiguous square feet is where Texas licensing begins, and the EPA's unrelated rule of thumb puts roughly 10 square feet as the limit of what a homeowner should tackle.
A hallway ceiling after a condensate leak, or a kitchen and dining wall after a slab leak. At this size the work belongs to a TDLR-licensed mold remediation contractor working from a licensed assessor's written protocol, with containment, a Consumer Mold Information Sheet up front and a certificate at the end.
Expansive Blackland Prairie clay moves under Dallas slabs and can work joints in the lines buried beneath them. Water from an under-slab line travels along the slab under cabinet bases and wall plates, so growth is often found low and spread wide. See slab leak water damage for how that water is traced.
Mold that follows a sewer backup, a creek rise or street flooding began in Category 3 water, and that changes the rules: porous material the water reached is taken out instead of cleaned. The contaminated cleanup comes first. See sewage cleanup and flood damage cleanup.
If it's an emergency, call now. For non-urgent mold remediation, send the form and we'll call you back.
At 25 contiguous square feet or more. Texas law does not require a license to remediate mold in an area where contamination covers a total surface of less than 25 contiguous square feet. Once the affected area reaches that size, the exemption no longer applies and TDLR-licensed people must do the work.
Contiguous is the word that matters. Three separate dinner-plate spots in three rooms are not the same thing as one patch that runs behind a wall from the dishwasher to the pantry. A technician measures what is actually connected, which is why a moisture map comes before anybody quotes a containment.
Owners get their own carve-out. You may sample or clean mold in your own home without a license, and an owner, a managing agent or an employee is not required to be licensed on a residential property, unless that property has 10 or more residential dwelling units. That last clause is why a landlord with a fourplex and a landlord with a 40-unit complex in Irving or Garland are in different positions.
Texas forbids it. A license holder may not perform both mold assessment and mold remediation on the same project, and may not hold an interest in both the assessing and the remediating company on that project. The assessor writes the protocol; a separate licensed contractor carries it out and is judged against it.
The rule exists so nobody grades their own homework. The assessor decides how far the growth reaches and what has to come out, the remediator does that work, and the assessor comes back to say whether the protocol was met. If one business did both halves, the person deciding how much work is needed would be the person paid to do it.
It also tells you what a sales pitch should never sound like. Any Dallas company offering mold testing and mold removal as a single package on a job of 25 contiguous square feet or more is describing something Texas does not allow. You can check any license and file a complaint with TDLR, whose complaint line is 1-800-803-9202.
The guide on Texas mold rules after water damage walks through the protocol, the certificate and the paperwork you should end up holding.
Air conditioning dries the air it moves, not the inside of a wall. Dallas sits in a humid subtropical climate with roughly 37 inches of rain a year, and once drywall, pad or framing stays wet inside a closed-up house, growth can start quickly. The EPA advises drying water-damaged areas within 24 to 48 hours, and its pages stress that this is guidance rather than a deadline and that mold can already have grown in materials dried inside it.
Think about where the water sits. Carpet pad on a slab holds moisture against warm concrete, and the slab gives it up slowly. A sheet of drywall wicks water upward from the floor plate, so the painted face looks fine for weeks while the paper on the back feeds growth. Tile and glued-down wood over concrete trap it underneath.
The calendar adds to it. June through September the air handler runs almost continuously and condensate lines and drain pans overflow into ceilings. Spring hail cracks shingles that leak later. A hard freeze like February 2021, when DFW dropped to minus 2 degrees on February 16 after about 295 straight hours below freezing, split pipes in attics and exterior walls that only poured once the thaw came. Plenty of those rooms were towel-dried and closed up, and announced themselves as a smell months later.
A sealed room inside your house. The crew hangs plastic from ceiling to floor, fits a zippered entry, covers the supply and return registers in the zone and runs a HEPA air scrubber. The aim is simple: keep what gets disturbed inside the work area while the damaged material comes out.
The ductwork is the reason to take this seriously here. In most Dallas slab homes the air handler and the trunk lines live in the attic, so the system pulls air from the hallway and pushes it into every bedroom. Expect to be asked to leave the system off, or to have nearby registers sealed, while the work runs. That is also why a ceiling job gets containment more often than the same square footage on a wall.
The ANSI/IICRC S520 standard for professional mold remediation is the industry reference for how all of this is done, and technicians can hold IICRC certifications such as Applied Microbial Remediation Technician. The IICRC is an industry body rather than a government agency, so ask any company which certifications its technicians hold and which TDLR license covers the job.
Three things at the end, plus paperwork. Nothing growing and no settled dust left in the work zone, framing and slab reading in line with untouched material elsewhere in the house, and no odor when you walk in. On a licensed project a separate assessor inspects before any wall closes.
Keep the documents together. On a licensed job the remediation contractor gives the property owner a Certificate of Mold Damage Remediation not later than 10 calendar days after the project stop date, on a form adopted by the Texas Commissioner of Insurance, and it carries a statement from a licensed assessor that the mold identified for the project has been remediated as the protocol required.
That file matters later. It helps when you sell the house, when an insurer asks what was done, and when the next contractor opens that wall. Ask for the drying log and the before-and-after photos as well, and see mold inspection and testing for who is allowed to perform the check.
A technician follows the moisture with meters and a thermal camera and shows you where it starts. A leaking supply line, drain or water heater goes to a Texas-licensed plumber first, because cleaning growth off a wall that is still being fed just resets the clock.
How much surface the growth covers decides what Texas requires. Under 25 contiguous square feet, no mold license is required to remediate. At 25 contiguous square feet or more the exemption ends, and the work moves to licensed hands under a written protocol.
Sheet plastic goes up wall to wall with a zippered entry, and every supply and return register inside the zone is taped over. A HEPA air scrubber then runs so the pressure in the zone stays slightly lower than the rest of the house, which keeps the dust the work raises from traveling.
Damaged drywall, batt and blown-in insulation, carpet pad and ceiling board are cut free, bagged where they stand and carried out closed. Studs, bottom plates, slab and brick are dense enough to stay in the house and be cleaned in place.
Framing and slab are HEPA-vacuumed and wiped, sanded where growth has stained the wood, and an antimicrobial may follow where it suits the material. Air movers and dehumidifiers then bring every wet material back to a dry reading, logged each day.
On a licensed project the assessor checks the work and the remediation contractor issues a Certificate of Mold Damage Remediation. New drywall, texture, paint and flooring follow once the numbers say dry, quoted separately, and the contractor should tell you which city permits apply.
In the pre-1980 parts of town, growth and demolition come as a pair. Oak Cliff, Lakewood and East Dallas, South Dallas, Cockrell Hill and the older streets of Garland, Richardson, Mesquite and Lake Highlands still carry original joint compound and textured ceilings, and cutting those materials out can disturb asbestos. Check with the state asbestos program at the Texas Department of State Health Services and with your city before anything comes down.
The 1950s to 1970s slab ranch belt brings a different pattern. In Pleasant Grove, Balch Springs, older Irving and Duncanville, cast-iron drain lines under the slab corrode with age while clay soil shrinks in August and swells with the next downpour. Growth there tends to begin low and quietly, in the cabinet bases and wall plates a slow under-slab leak has been feeding.
Timing follows the local calendar. February freeze leaks surface as odors by late spring, the August 22, 2022 cloudburst that dropped 9.19 inches at DFW and a reported 15.31 inches in southeast Dallas left wet drywall in houses that had never flooded, and July condensate leaks are usually noticed on a ceiling rather than heard in an attic. Any of those rooms can look fine and still read wet.
Not sure if you're covered? Check your ZIP code.
Finding the moisture behind the smell in Dallas homes, and what Texas requires of a licensed mold assessment.
Drying slab floors, wall cavities and framing to a measured standard, with readings logged daily instead of guessed.
Stains, sags and soaked insulation from attic equipment, hail-worn roofs and upstairs bathrooms, traced, dried and refinished.
Moisture mapping, extraction, structural drying and repair for Dallas homes and businesses, whether the water came from above or below.
Mitigating one room of clean water damage in Dallas typically runs $1,200 to $4,000, gray water $2,500 to $6,500, and a flooded slab first floor $3,000 to $12,000.
Texas licenses mold work through TDLR.
Yes. The Texas Department of Licensing and Regulation licenses mold assessors and remediators under Occupations Code Chapter 1958 and 16 Texas Administrative Code Chapter 78, and the license is required once the affected area reaches 25 contiguous square feet. You can look up any license with TDLR and call its complaint line at 1-800-803-9202.
Not on a job of 25 contiguous square feet or more. Texas does not allow the same license holder to assess and remediate the same project, so that size of job involves two companies: a licensed assessor who writes the protocol and a licensed remediation contractor who follows it. What one call can start is the water damage side, meaning finding the leak, extracting and drying.
It is the closing document on a licensed Texas mold project. The remediation contractor gives it to the property owner not later than 10 calendar days after the project stop date, on a form adopted by the Texas Commissioner of Insurance. It includes a statement from a licensed assessor, not the remediator, that the mold identified for the project was remediated as the protocol required.
That depends entirely on your policy and the cause. Most Texas policies cover sudden and accidental water damage, while gradual leaks and seepage usually are not covered, and mold that follows a flood generally falls outside a standard policy. Check your policy or ask your agent, and the Texas Department of Insurance can help with claim questions. Photos and moisture readings from the crew help you document the loss, and coverage is decided by your insurer.
In your own home, yes. Texas lets a homeowner sample or clean mold in the property they own, and the EPA's rule of thumb is that an area under about 10 square feet can usually be handled by the homeowner on hard surfaces. Anything porous, including carpet pad, insulation and the paper face of drywall, is usually replaced rather than scrubbed. The owner exemption stops at residential property with 10 or more dwelling units.
No. Primer hides the stain and leaves the growth and the moisture behind it in place, so it reappears. Remove or clean the growth, fix whatever is wetting the material, dry it to a reading that matches the same material elsewhere in the house, and paint after that.
Color is not a useful guide, and the CDC calls the term toxic mold inaccurate. Mold can trigger allergy and asthma symptoms in some people whatever shade it happens to be, which is why the advice everywhere is to remove the growth and repair the water instead of hunting for a species name. A job is planned by its size, its water category and the materials involved.