Mold Removal Cost in Houston: 2026 Price Breakdown
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Mold removal in Houston, TX typically costs $1,500 to $6,000 for a residential project, with a mid-range job around $2,500. But that range covers everything from a $500 bathroom spot-treatment to a $15,000 post-flood remediation, so this page breaks the cost down by service, area of the home, and mold type— plus what Texas's mold licensing law adds. For a plain-English explainer of why prices vary, see our Houston mold remediation cost guide.
Cost by Service
| Service | Typical Houston Cost |
|---|---|
| Visual mold inspection | $300 – $700 (often free locally) |
| Licensed mold assessment & protocol (TX, 25+ sq ft) | $300 – $800 |
| Lab / air-sample testing | $250 – $600 |
| Air quality testing | $250 – $500 |
| Small spot remediation (under 10 sq ft) | $500 – $1,500 |
| Standard remediation (single room) | $1,500 – $4,000 |
| Post-remediation clearance assessment | $250 – $500 |
Cost by Area of the Home
Houston homes are overwhelmingly built on slab foundations with the air conditioning in the attic, which shapes where mold shows up — and what it costs to fix.
| Area | Typical Cost | Why |
|---|---|---|
| Bathroom | $500 – $2,000 | Usually surface mold; ventilation fix |
| Attic | $1,000 – $4,000 | Very common in Houston; roof leaks + attic HVAC |
| HVAC / ductwork | $2,000 – $6,000 | AC condensation in humid air; system cleaning |
| Walls / drywall | $1,000 – $5,000 | Porous material removal and replacement |
| Post-flood (flood cuts) | $3,000 – $12,000 | Drywall cut 2–4 ft up, drying, treatment |
| Whole home / severe | $10,000 – $30,000 | Multiple areas, structural drying, rebuild |
Cost by Mold Type
| Mold Type | Cost Impact |
|---|---|
| Common household mold (Cladosporium, Penicillium) | Baseline pricing |
| Mildew / surface growth | Lowest — often cleanable, see mold vs mildew |
| Black mold (Stachybotrys) | +20–40% for containment & PPE |
What Texas Mold Licensing Adds
Texas is one of the few states that licenses mold work. For contamination covering 25 contiguous square feet or more, a licensed mold assessment consultant writes the remediation protocol, and a separately licensedremediation contractor does the work — the same company can't do both, which protects you from conflicts of interest. After the job passes a clearance assessment, you receive a Certificate of Mold Damage Remediation, which is valuable when dealing with insurers and when you sell your home. Budget a few hundred dollars for the assessment; it often pays for itself. Details in our Texas mold laws guide.
Houston vs. National Averages
Nationally, mold remediation runs about $10–$25 per square foot, with the average project between $1,100 and $3,500. Houston pricing sits in the same range, with three local wrinkles:
- Relentless humidity.Houston averages around 75% relative humidity, and summer levels regularly top 90%, so mold returns fast if the moisture source isn't fixed.
- Hurricane and flood season.Storms like Harvey and Beryl left many homes needing flood cuts and remediation — a job type that's rarer elsewhere.
- Attic-mounted AC. Slab homes put the HVAC system in a hot attic, where condensation feeds mold in ducts and on decking.
Will Insurance Cover It?
Only sometimes. Mold from a sudden covered event (a burst pipe, a storm-damaged roof) may be covered, usually up to a mold cap. Flood-caused mold falls under flood insurance. Long-term humidity or slow leaks generally aren't covered. See our Texas mold insurance guide.
Methodology & Sources
The ranges above reflect typical residential pricing in the Houston, TX market, compiled from regional remediation estimates and widely reported national cost data (industry averages of roughly $10–$25 per square foot and average projects of $1,100–$3,500). Local adjustments account for Houston's humidity, flood exposure, attic-mounted HVAC, and Texas licensing requirements. These are planning estimates, not quotes. Last updated 2026. For an exact figure, get a free on-site inspection.
Frequently Asked Questions
What is the average cost of mold removal in Houston?
Most residential mold removal projects in the Houston area fall between $1,500 and $6,000, with a typical mid-range job around $2,500. Small single-area jobs can start near $500, while flood-related or whole-home remediation can exceed $10,000.
Does Texas law affect the cost of mold remediation?
Yes. For mold covering 25 contiguous square feet or more, Texas requires a licensed mold assessor to write a remediation protocol and a separately licensed remediation company to do the work — the same company can't do both. The assessment typically adds a few hundred dollars, and it gets you a Certificate of Mold Damage Remediation once the job passes clearance.
How much does attic or HVAC mold removal cost in Houston?
Attic mold removal in Houston typically runs $1,000 to $4,000, and HVAC or ductwork remediation $2,000 to $6,000. Because most Houston homes have the HVAC system in the attic, the two problems often show up together.
Does homeowners insurance cover mold in Texas?
Often only when the mold comes from a sudden covered event like a burst pipe, and many Texas policies cap mold coverage (commonly $5,000–$25,000). Mold from flooding is usually handled under flood insurance, not homeowners. Long-term humidity or leaks generally aren't covered.
How does Houston mold removal pricing compare to the national average?
Houston pricing is broadly in line with the national average of about $10–$25 per square foot. Houston sees more attic, HVAC, and flood-related jobs than most cities because of its humidity, hurricane season, and slab-foundation homes with attic-mounted AC.