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Updated Oct 28, 2026 · By Michael Gonzales · Prices from HomeAdvisor, HomeGuide and Modernize; cleanup and insurance guidance from the EPA and the Insurance Information Institute
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Short answer: Professional mold remediation costs about $1,200 to $3,800 for most homes, and HomeAdvisor's 2026 average is $2,369. Pros usually price it at $10 to $30 per square foot. A small bathroom job can be $500, while mold through a whole house runs $10,000 to $30,000.
Homeowners insurance usually pays only when a covered event, such as a burst pipe, caused the mold.
Compare local water damage and mold restoration companies, or let us match you with pros. Humid and storm-prone states: Florida, Texas, Louisiana, North Carolina, New York and California.
How much does mold remediation cost?
Most jobs land between about $1,000 and $6,000. The big cost guides use slightly different data, so here is each one side by side:
| Source | What it measures | Typical cost |
|---|---|---|
| HomeAdvisor, Jun 2026 | Mold removal, all jobs | $2,369 average; $1,223 – $3,758 typical |
| HomeAdvisor, Jun 2026 | Price per square foot | $10 – $25 |
| HomeGuide, Feb 2026 | Mold removal, average job | $1,500 – $6,000 ($15 – $30 per sq ft) |
| Modernize, Aug 2026 | Mold remediation, average job | $1,000 – $6,000; about $2,500 for a mid-size job |
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Sources: HomeAdvisor, mold remediation cost (updated June 19, 2026), HomeGuide, mold removal cost (February 5, 2026) and Modernize, mold remediation cost (updated August 12, 2026).
The low end is a small patch on a hard surface. The high end is mold inside walls, ducts or insulation, where materials have to be cut out and replaced.
How much does mold removal cost per square foot?
HomeGuide puts most jobs at $15 to $30 per square foot. Size matters more than anything else:
| Affected area | HomeGuide price |
|---|---|
| Small: 10 – 100 sq ft | $500 – $1,500 |
| Medium: 100 – 300 sq ft | $1,500 – $6,000 |
| Large: 300 – 1,000 sq ft | $6,000 – $15,000 |
| Very large: 1,000+ sq ft | $15,000 – $30,000 |
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Source: HomeGuide, mold removal cost. HomeGuide puts mold remediation labor at $75 to $120 an hour.
How much does mold remediation cost by room?
Where the mold is changes the price, because some spaces are harder to reach and hold more porous material. Here's what the three guides list:
| Location | HomeAdvisor | HomeGuide | Modernize |
|---|---|---|---|
| Bathroom | $500 – $1,000 | $500 – $2,000 | $500 – $1,500 |
| Crawl space | $500 – $2,000 | $1,500 – $4,000 | $500 – $2,000 |
| Basement | $500 – $3,000 | $1,500 – $6,000 partial; $6,000 – $15,000 full | $1,500 – $4,000 |
| Attic | $1,000 – $4,000 | $1,500 – $6,000 partial; $6,000 – $15,000 full | $1,000 – $3,000 |
| Inside walls or drywall | $1,000 – $20,000 | Not listed separately | $1,000 – $2,500 |
| HVAC system and ducts | $3,000 – $10,000 | $2,000 – $10,000 | $3,000 – $10,000 |
| Whole house | $10,000 – $30,000 | $15,000 – $30,000 | $10,000 – $30,000 |
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Sources: HomeAdvisor, HomeGuide and Modernize mold cost guides (dates above).
Black mold. HomeGuide puts black mold removal at $2,000 to $10,000. Modernize says a job involving black mold costs about 20% to 50% more, because specialized safety gear is often required. You can't tell the type by looking, and the EPA's advice is the same for every type of mold: clean it up and fix the moisture.
How much does mold testing cost?
Usually $250 to $650, and you don't always need it. The EPA says that if you can see mold, sampling usually isn't necessary, and there are no EPA or other federal limits for mold to test against.
| Service | Typical cost | Source |
|---|---|---|
| Basic inspection or test | $250 – $350 | HomeAdvisor |
| Inspection, average home | $300 – $650 (up to $1,000 for a large home) | HomeGuide |
| Comprehensive test with lab analysis | $450 – $800 | HomeAdvisor |
| Post-remediation (clearance) test | $150 – $500 | Modernize |
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Testing makes the most sense when you smell mold but can't find it, or when you want proof the cleanup worked. We'll cover DIY kits vs. professional testing in a separate guide.
What else adds to a mold remediation bill?
Removing the mold is often cheaper than putting the room back together and fixing the leak. Watch for these line items, all from HomeGuide unless noted:
- Drywall: $1.50 to $3.50 per sq ft to replace. HomeAdvisor puts typical drywall repair after mold at $1,000 to $2,900.
- Insulation: $1.00 to $4.50 per sq ft.
- Flooring: carpet $2 to $8 per sq ft, hardwood $11 to $25 per sq ft, subfloor $2.20 to $4.75 per sq ft.
- Paint: $1 to $3 per sq ft.
- The water source: a leaking pipe repair runs $150 to $850; a roof leak $150 to $1,000, or $3,000 to $6,000 if the structure is damaged. Find plumbers or roofers near you.
- Ducts: duct cleaning $200 to $1,000, plus $70 to $150 to sanitize.
Ask whether the quote includes containment, air scrubbing, disposal, rebuilding and a clearance test, or whether those are billed separately.
How long does mold remediation take?
One to three days for most small and medium jobs, and up to seven days for large ones, per HomeGuide. HomeAdvisor says pros generally recommend that you stay somewhere else while the work is done, so budget for that if the job is big.
Does homeowners insurance cover mold removal?
Usually not, unless a covered event caused it. The Insurance Information Institute (III) says mold, like rot, is generally treated as a home maintenance issue and isn't covered by standard homeowners policies. But if the mold is the direct result of a covered peril, such as a burst pipe, the cost of removing it may be covered.
- Slow leaks and humidity: usually not covered, because insurers treat them as maintenance.
- Sudden water damage: a burst pipe or appliance failure may be covered, including the mold it caused. Report it fast.
- Floods: the III lists flood among the perils standard homeowners policies leave out. It says federal flood insurance may cover mold and mildew only if it's directly attributable to a flood.
- Your policy's wording: read the mold or "fungi" section of your policy and ask your agent what it covers and up to what amount.
If you plan to file a claim, take photos before anything is removed, keep receipts, and call your insurer before you sign a remediation contract.
Can you remove mold yourself?
For small areas, often yes. The EPA says you can usually handle mold covering less than about 10 square feet (roughly a 3-foot by 3-foot patch) yourself. HomeAdvisor puts DIY gear and supplies at about $50 to $300.
The EPA's cleanup basics:
- Fix the water problem first. If you don't, the mold comes back.
- Dry wet materials within 24 to 48 hours.
- Scrub hard surfaces with detergent and water, then dry them. Absorbent materials such as ceiling tiles and carpet may have to be thrown away.
- Protect yourself. Wear an N-95 respirator, gloves and goggles. The EPA says an N-95 costs about $12 to $25.
- Don't paint over mold. Clean and dry the surface first.
Call a pro when the area is bigger than 10 square feet, when the water was sewage or other contaminated water, or when you suspect mold in your heating and cooling system. The EPA says not to run the HVAC system if you think it's contaminated.
Keep it from coming back. The EPA recommends keeping indoor humidity below 60%, ideally 30% to 50%, and says a humidity meter costs about $10 to $50. A basic digital hygrometer like the TempPro TP50 (4.6 stars from more than 150,000 ratings on Amazon when we checked) shows you which rooms run damp.
For bigger moisture problems, HomeGuide puts a crawl space vapor barrier at $2 to $4 per sq ft, full crawl space encapsulation at $3 to $10 per sq ft, a sump pump at $600 to $2,500 and a whole-basement dehumidifier at $1,100 to $2,800.
Some utilities offer rebates on efficient dehumidifiers; check our rebate finder by ZIP code.
How do you hire a mold remediation company?
- Get at least three written estimates, as HomeGuide suggests, and compare the same scope: square footage, containment, what gets removed and what gets rebuilt.
- Ask them to find the moisture source. A quote that only cleans the surface isn't a fix.
- Ask which guidelines they follow. The EPA suggests contractors who follow its remediation guidance for schools and commercial buildings or the American Conference of Governmental Industrial Hygienists (ACGIH) guidelines.
- Check certifications and insurance. HomeGuide lists IICRC, RIA, NORMI, NAMP and PMII certifications, and suggests a company that's licensed, insured and has been in business at least five years.
- Check your state's license rules. Texas (TDLR) and Florida (DBPR) license mold assessors and remediators. In New York, the Department of Labor's mold program says the same company can't do both the assessment and the remediation on a property. Our contractor licensing guide links each state's lookup.
- Ask about a clearance test after the work, and who does it.
- Don't pay in full up front. HomeGuide says to never pay the whole bill before the work is done.
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Frequently asked questions
How much does it cost to get rid of mold in an entire house? About $10,000 to $30,000, per HomeAdvisor and Modernize. HomeGuide puts whole-house remediation at $15,000 to $30,000. Repairs to walls, floors and the leak are often extra.
How much does mold remediation cost per square foot? About $10 to $25 per square foot, per HomeAdvisor, or $15 to $30, per HomeGuide.
Is mold remediation covered by insurance? Only sometimes. The III says standard homeowners policies generally don't cover mold, but may cover it when a covered peril such as a burst pipe caused it. Flood-related mold needs flood insurance.
Can you remediate mold yourself? For areas under about 10 square feet, the EPA says you can usually do it yourself with protective gear. Fix the moisture first. Hire a pro for larger areas, contaminated water or mold in your HVAC system.
Do I need a mold test before remediation? Not if you can see the mold. The EPA says sampling usually isn't necessary when mold is visible. A test can help find hidden mold or confirm the cleanup worked.
How long does mold remediation take? One to three days for most small and medium jobs, and up to a week for large ones, per HomeGuide.
Is black mold removal more expensive? Usually. HomeGuide puts black mold removal at $2,000 to $10,000, and Modernize says it costs about 20% to 50% more than a typical job.
Sources
HomeAdvisor: Mold remediation cost (updated Jun 19, 2026) · HomeGuide: Mold removal cost (Feb 5, 2026) · HomeGuide: Mold inspection cost · Modernize: Mold remediation cost (updated Aug 12, 2026) · EPA: A brief guide to mold, moisture and your home · Insurance Information Institute: Protecting your house from mold · Insurance Information Institute: Which disasters are covered by homeowners insurance? · Texas TDLR: Mold assessors and remediators · Florida DBPR: Mold-related services · New York State Department of Labor: Mold program. Checked October 26, 2026.