Most homeowners pay $1,200–$3,750 for professional mold remediation, with a national average of about $2,400. Pros typically charge $10–$25 per sq. ft. of affected area; small bathroom jobs can be about $500, while whole-house remediation runs $10,000–$30,000 (Angi, HomeAdvisor, This Old House and HomeGuide data, as of October 2026).
Updated October 8, 2026. Source: Angi + 6 more. National US estimates.
You need professional remediation when mold covers more than a small patch, keeps coming back, or follows a leak or flood. The EPA says a homeowner can usually handle an area of less than about 10 sq. ft.; beyond that, after heavy water damage, or when sewage or contaminated water was involved, it points you to professional guidance and experienced contractors.
This guide covers average remediation prices, cost per square foot, prices by location (attic, basement, crawl space, walls and HVAC), black mold, Servpro, testing and the repairs that often follow. To plug in your own numbers, try the mold remediation cost calculator.
Want a number for your project? Try our free mold remediation cost calculator — enter your size and options for an instant range.
Average cost
Typical professional remediation prices, national averages as of October 2026:
| Scenario | Typical range | Notes |
|---|---|---|
| Small job: under 50–100 sq. ft. (bathroom, one wall section) | $500–$1,500 | Surface growth, little or no material removal |
| Mid-size job: 100–300 sq. ft. (basement corner, part of an attic) | $1,500–$6,000 | Containment, HEPA air filtration, some drywall or insulation removed |
| Large job: 300–1,000 sq. ft. or HVAC contamination | $3,000–$15,000 | Whole attic or basement, duct and air-handler cleaning |
| Whole house after a flood or long-term leak | $10,000–$30,000 | Multiple rooms; rebuild costs are extra |
Mold remediation cost by location
Where the mold is matters as much as how much there is. Ranges reported by Angi/HomeAdvisor, with HomeGuide and Fixr figures noted where they differ:
| Location | Typical cost | Good to know |
|---|---|---|
| Bathroom | $500–$1,000 | Can top $8,000 if mold is behind a tub, vanity or wall |
| Crawl space | $500–$2,000 | HomeGuide reports $1,500–$4,000; encapsulation is extra |
| Basement | $500–$3,000 | Full basements can reach $6,000–$15,000 (HomeGuide) |
| Attic | $1,000–$4,000 | Up to $7,000 for long-undetected roof leaks |
| Inside walls (drywall) | $1,000–$20,000 | Depends on how much drywall and framing is opened |
| HVAC system and ducts | $3,000–$10,000 | Air ducts alone run about $600–$2,000 |
| Whole house | $10,000–$30,000 | Usually after flooding or chronic leaks |
Mold remediation cost by affected area
At the common rate of $10–$25 per sq. ft. (small jobs land at the high end because of minimum charges):
| Affected area | Typical cost |
|---|---|
| 50 sq. ft. | $500–$1,250 |
| 100 sq. ft. | $1,000–$2,500 |
| 200 sq. ft. | $2,000–$5,000 |
| 500 sq. ft. | $5,000–$12,500 |
| 1,000 sq. ft. | $10,000–$25,000 |
Cost breakdown: materials, labor, permits and extras
Line-item estimate for remediating about 100–150 sq. ft. of mold in a basement, with containment, HEPA air filtration and removal of some drywall. Ranges are national, as of October 8, 2026.
| Cost item | Typical range | What it covers |
|---|---|---|
| Labor (containment, removal, HEPA vacuuming, cleaning) | $700–$2,000 | Labor is roughly 60% of a typical job; crews bill about $75–$120 per hour |
| Equipment, containment and supplies | $300–$900 | Plastic sheeting, negative air machines/air scrubbers, PPE, antimicrobial products |
| Removal and disposal of moldy materials | $100–$400 | Bagging and hauling drywall, insulation or carpet |
| Inspection or testing | $0–$350 | Basic testing runs about $250–$350 if not included |
| Contingency (about 10%) | $100–$300 | Hidden growth found once walls are opened |
| Estimated total | $1,200–$3,950 | Before any discounts or rebates |
Rebuilding (new drywall, paint, flooring) and fixing the leak are usually billed separately, so ask whether your quote covers them.
What affects the price
- Size of the affected area. Pros typically charge $10–$25 per sq. ft. (some guides report up to $30), so a 100 sq. ft. problem runs about $1,000–$2,500. Very small jobs cost more per square foot because of minimum charges.
- Location (attic, basement, walls, HVAC system). Bathrooms and crawl spaces are usually the cheapest ($500–$2,000), attics run $1,000–$4,000, and mold inside walls or in the HVAC system can cost $3,000–$20,000 because of demolition and duct cleaning.
- Containment and air filtration requirements. Larger jobs need plastic containment, negative air pressure and HEPA air scrubbers so spores don't spread. Fixr puts air scrubbers and HEPA vacuuming at about $500–$1,000 on top of labor.
- Materials that must be removed and replaced (drywall, insulation, flooring). Mold on non-porous surfaces can be cleaned, but porous materials usually have to go. Expect roughly $1.50–$3.50 per sq. ft. to replace drywall, $1–$4.50 per sq. ft. for insulation and $2–$8 per sq. ft. for carpet, on top of the remediation itself.
- Lab testing before and after the work. Basic mold testing costs about $250–$350 and a full inspection with lab analysis $450–$800. Post-remediation clearance testing is often an extra charge, so ask whether it is included.
- Repairing the underlying moisture problem. Mold returns if the moisture stays. A small leak repair can be as little as $150–$350, a roof leak $400–$2,500, and basement waterproofing or crawl space sealing several thousand dollars.
Ways to save
- Act fast: fixing a leak and drying materials within a day or two keeps a small problem from becoming a $5,000+ job.
- Check your homeowners policy. Mold caused by a sudden, covered event (like a burst pipe) may be covered, while mold from long-term leaks or humidity usually is not.
- Get at least three written quotes that list the square footage, containment method, materials to be removed and whether testing is included.
- Hire an independent inspector for testing rather than the company doing the removal, so the scope isn't inflated.
- Separate the remediation from the rebuild: a general contractor or handyman can often replace drywall and paint for less than a restoration company.
- Fix the moisture source first (gutters, grading, a dehumidifier) so you don't pay for remediation twice.
Related questions people ask
How much does mold remediation cost on average?
The average cost of mold remediation is about $2,400, and most homeowners pay $1,200–$3,750. Small, contained jobs start around $500, while infestations spread across several rooms quickly pass $3,000 and whole-house jobs reach $10,000–$30,000.
What does black mold remediation cost?
Black mold (Stachybotrys chartarum) removal usually costs $800–$7,000 according to Fixr, and HomeGuide reports $2,000–$10,000. Some pros charge more for the extra protective gear and stricter containment, but the EPA's cleanup advice is the same regardless of mold species, so the size and location of the growth matter more than its color.
How much does Servpro charge for mold remediation?
Servpro does not publish a national price list; local franchises quote each job after an inspection. Its own cost page cites HomeAdvisor's national average of $2,368, and Fixr reports Servpro jobs at roughly $10–$25 per sq. ft., in line with other remediation companies. WhatHomeCosts is not affiliated with Servpro.
What is the mold remediation cost per square foot?
Most companies charge $10–$25 per sq. ft. of affected area, including labor and materials. HomeGuide reports a wider $15–$30 per sq. ft., with small jobs at the top of the range because of minimum fees.
How to get an accurate quote
Ask at least three licensed, insured remediation companies (look for IICRC-certified technicians) for written, itemized quotes. Give each the same information:
- Where the mold is, roughly how large the visible area is in square feet, and any musty smells or health symptoms in the home.
- What caused it (roof leak, plumbing leak, flood, humidity) and whether the leak has been fixed.
- Any test results or inspection reports you already have, and whether you want independent clearance testing afterward.
- Ask what is included: containment, HEPA air filtration, removal and disposal of materials, antimicrobial treatment, rebuild work and any warranty.
FAQ
Can I remove mold myself?
The EPA says areas under about 10 sq. ft. are generally manageable for a homeowner, and HomeAdvisor estimates $50–$300 in gear and cleaners for that size. Larger areas, mold in the HVAC system, or mold after sewage or contaminated water should be handled by professionals.
Does homeowners insurance cover mold remediation?
Only sometimes. Mold that results from a sudden, covered water event is often covered, but mold from neglected leaks, flooding (without flood insurance) or high humidity usually is not. Many policies also cap mold payouts, so read yours before work starts.
How long does mold remediation take?
A small, contained job may take a day or two, while larger jobs that involve removing drywall and running air scrubbers often take several days. Rebuilding and any repairs to the moisture source add more time.
Is mold testing worth paying for?
Testing ($250–$800) is useful when you smell mold but can't see it, after remediation to confirm the area is clean, or for a home sale. If the mold is visible and its source is known, the money is usually better spent on removal and fixing the leak.
More Mold & Water Damage costs
Related cost guides
Sources
- Angi — How Much Does Mold Remediation Cost? [2026 Data] (updated Jul 9, 2026). Checked October 8, 2026.
- HomeAdvisor — How Much Does Mold Remediation Cost in 2026? (updated Jun 19, 2026). Checked October 8, 2026.
- This Old House — How Much Does Mold Remediation Cost? (2026 Guide) (updated Mar 11, 2026). Checked October 8, 2026.
- HomeGuide — How Much Does Mold Removal and Remediation Cost? (2026) (Feb 5, 2026). Checked October 8, 2026.
- Fixr — Mold Remediation Cost (updated Aug 29, 2025). Checked October 8, 2026.
- Servpro — Mold Remediation Cost (accessed Oct 2026). Checked October 8, 2026.
- US EPA — Mold Cleanup in Your Home (updated Jun 4, 2026). Checked October 8, 2026.
Prices are estimates and vary by location and provider. See our methodology and editorial policy. Browse all foundation & water cost guides.