See what mold removal should cost before a company quotes you. Enter the size of the moldy area and answer three questions. You get a low-to-high price, with each part shown apart. No sign-up needed.
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| Mold removal | — |
| Testing and inspection | — |
| Air duct mold removal | — |
| New drywall and paint | — |
National prices, not your city's. Fix the leak or damp that caused the mold first, or it comes back. Black mold, HVAC units and whole-house jobs can cost more than shown. Based on HomeGuide, Angi cost data, updated October 2026. See sources.
Optional. The estimate above is yours either way. Leave your details and a local mold remediation company will call you for an exact quote.
Mold companies price removal by the square foot of moldy area. We multiply your area by $10 to $30 per square foot. Testing, air ducts and new drywall add the amounts shown in the sources below. We round to the nearest $50.
Your real price depends on your city, the type of mold and how hard it is to reach. Get written quotes from at least three companies. If the mold came from a leak or flood, see the water damage cost calculator, or find restoration companies in your city.
Angi puts the national average at $2,368, with most projects between $1,223 and $3,757. HomeGuide reports $1,500 to $6,000 on average, and up to $15,000 for a whole attic or basement.
Angi says most mold removal pros charge about $10 to $25 per square foot. HomeGuide reports $15 to $30 per square foot. So a 100 sq ft area costs about $1,000 to $3,000.
Yes. HomeGuide lists a bathroom at $500 to $2,000, a crawl space at $1,500 to $4,000, a partial attic or basement at $1,500 to $6,000, and an HVAC system at $2,000 to $10,000. Angi lists a crawl space at $500 to $2,000 and a basement at $500 to $3,000. Hard-to-reach places cost more.
Angi says mold testing usually costs $250 to $350. HomeGuide puts a full mold inspection at $300 to $650 for an average home, and up to $1,000 for a large home.
HomeGuide notes the EPA and CDC suggest doing it yourself only for areas smaller than 10 square feet. Wear gloves and a mask and keep the area aired out. Larger areas need a professional.
Usually not, says HomeGuide, unless the mold came from a covered event like a burst pipe or a disaster. Some insurers only cover it with flood insurance. Check your own policy.
National figures. We do not adjust for your region. Rates checked October 2026.