Mold Remediation Cost in Huntsville, AL
Most mold jobs are priced by the square foot of affected area, with typical national ranges of about $10–$30 per square foot. Use the table and calculator below to set expectations, then compare free, no-obligation quotes from independent local companies.
Get a Free QuoteTypical mold remediation prices
Typical national ranges from This Old House (2026), Fixr (2025) and Bob Vila (2024) — estimates, not quotes.
| Item | Typical range |
|---|---|
| Mold remediation, typical job | $1,200–$3,750 (This Old House avg about $2,300); Fixr $1,500–$9,000, avg about $3,500 |
| Per square foot | $10–$30 |
| By size: 50 / 100 / 200 / 500 / 1,000 sq ft | $500–$1,250 / $1,000–$2,500 / $2,000–$5,000 / $5,000–$12,500 / $10,000–$25,000 |
| Crawl space mold remediation | $500–$2,000 |
| Crawl space encapsulation | $1,500–$15,000 (avg about $5,500; 1,000 sq ft about $3,000–$7,000) |
| Crawl space dehumidifier, installed | $800–$2,000 |
| Basement | $500–$4,000 |
| Attic | $1,000–$9,000 |
| Whole house | $10,000–$30,000 |
| Mold inspection | $450–$800 (Bob Vila: $299–$1,014, avg about $656) |
| Air sample testing | $250–$350 |
Ranges are national figures from published cost guides. Your price depends on an on-site look by the company you hire.
Mold remediation cost calculator
Multiply the affected area by the typical $10–$30 per square foot, then add common extras.
Estimate only, based on typical national ranges from cost guides. It is not a quote; your price depends on an on-site assessment by the company you hire.
What drives the cost of mold remediation
Size of the affected area
Square footage of moldy material is the biggest factor, which is why cost guides price by the foot. The EPA says a homeowner can usually handle an area smaller than about 10 square feet, so professional jobs tend to start above that, and many companies have a minimum charge. Our 10 square foot rule guide explains where that line sits.
Where the mold is
Location changes access and labor. Crawl spaces are cramped and often lead to vapor barrier or encapsulation work. Attics involve roof decking and insulation, one reason attic jobs span $1,000–$9,000. Basements depend on whether walls are finished. See crawl space mold, attic mold and basement mold for details.
Fixing the moisture source
The EPA warns that if you clean up the mold but don’t fix the water problem, the mold problem will most likely come back. A roof leak, plumbing failure, poor drainage or a humid crawl space may need a roofer, plumber or HVAC contractor, usually quoted separately. In Huntsville, where summer dew points average close to 70°F in July (NOAA 1991–2020 normals), humidity control often belongs in the plan.
Containment and air filtration
Larger jobs typically involve plastic sheeting, zipper doors and air scrubbers to keep spores from spreading to clean rooms. More rooms or a more complex layout means more setup.
Removal and rebuild
Moldy drywall, insulation and carpet are often removed rather than cleaned. Replacing them is rebuild work, which may be a separate contract. Alabama’s Home Builders Licensure Board law generally requires an HBLB license for residential repair or improvement work over $10,000 (roofing over $2,500), so ask who holds that license if your job includes rebuild.
Inspection and testing
The EPA says sampling is usually unnecessary when mold is visible, and ADPH says testing for molds is not recommended. An inspection can still be worth it when the source is hidden, and some homeowners want an independent clearance check afterward. Read Do you really need mold testing? before paying for one.
HVAC, older homes and special rules
Mold in air handlers or ducts adds cost, and Alabama requires HACR certification for duct cleaning and cleaning of heating and air conditioning equipment. Older homes may raise asbestos or lead-paint rules when materials come out, which can add testing or specialized handling. This is general information, not legal advice.
Get real numbers for your home
Published ranges can only take you so far. We connect Huntsville-area homeowners with independent local mold inspection and remediation companies for free, no-obligation quotes. Ask each company for a written scope that lists containment, removal, cleaning, drying, any rebuild and any testing, so you can compare like with like.
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Mold remediation cost FAQ
How much does mold remediation cost per square foot?
Typical national ranges put mold remediation at about $10–$30 per square foot of affected area. This Old House lists $10–$25 and Fixr lists $10–$30. By that math a 100 square foot job lands around $1,000–$2,500. Small jobs may carry a minimum charge, and rebuild, crawl space or HVAC work is often priced separately, so treat the per-foot figure as a starting point.
What is the average cost of mold remediation?
This Old House (2026) reports a typical job at $1,200–$3,750, with an average of about $2,300. Fixr (2025) reports $1,500–$9,000, averaging about $3,500. These are national estimates. We did not find reliable, current Huntsville-only price data, so local quotes may land above or below them depending on the size of the area, where it is and how much material needs replacing.
How much does crawl space mold remediation cost?
Cost guides list crawl space mold remediation at about $500–$2,000. If the crawl space is also encapsulated, This Old House puts that at $1,500–$15,000, averaging about $5,500, or roughly $3,000–$7,000 for 1,000 square feet. An installed crawl space dehumidifier typically adds $800–$2,000. All of these are national estimates, not quotes for your home.
Do I need to pay for mold testing before remediation?
Not usually. The EPA says sampling is usually unnecessary when mold is visible, and ADPH says testing for molds is not recommended. An inspection, typically $450–$800, can still help find a hidden moisture source. Some homeowners also pay for air sampling, about $250–$350 per Bob Vila, as a clearance check after the work, ideally done by someone independent of the remediation company.
Why do mold remediation quotes vary so much?
Companies scope jobs differently. One quote may include containment, HEPA air filtration, removal of drywall or insulation, drying and a post-job check, while another covers cleaning only. Rebuild, moisture repairs, crawl space work and testing may be separate line items or left out entirely. Ask each company for a written scope so you can compare the same work side by side.
Does a large mold job need a licensed contractor in Alabama?
There is no Alabama mold license, according to ADPH. But under the Home Builders Licensure Board law, residential repair or improvement work over $10,000, or roofing over $2,500, generally requires an HBLB license, so a remediation-plus-rebuild contract may cross that line. Ask for the HBLB license number on any rebuild work. This is general information, not legal advice.
More questions? Visit the full mold FAQ.
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