Mold remediation cost calculator
Get a sanity-check range for a professional mold job before you compare quotes. It uses the ranges published by major cost guides, not quotes from any company, and it never asks for your contact details.
Your estimated range
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Under about 10 square feet, EPA says most people can clean mold themselves if the water problem is fixed and nobody in the home has health concerns. See how to get rid of mold yourself.
How the calculator works
The main estimate multiplies your area by the $10 to $25 per square foot range that This Old House, LendEDU and SERVPRO report from Angi and HomeAdvisor data. Fixr reports a wider $10 to $30. We then show, separately, the typical range those guides report for the location you chose. If your per-square-foot estimate is far below that range, expect a minimum charge; attics and HVAC systems cost more to contain and reach.
Inspection uses HomeAdvisor's reported range of $303 to $1,075. Clearance testing uses a $200 to $500 range reported by a remediation franchise, and duct work uses the $600 to $2,000 range reported across cost guides. Rebuild work (new drywall, paint, flooring) is usually extra and is not included.
| Input | Low | High | Source |
|---|---|---|---|
| Per square foot | $10 | $25 | This Old House (Mar 2026), LendEDU (Sep 2026), SERVPRO (Sep 2026) |
| Walls, ceiling or a single room | $1,000 | $20,000 | Ranges across Fixr, Bob Vila, This Old House, LendEDU |
| Bathroom | $500 | $1,500 | Ranges across Fixr, Bob Vila, This Old House, LendEDU |
| Basement | $500 | $4,000 | Ranges across Fixr, Bob Vila, This Old House, LendEDU |
| Crawl space | $500 | $2,000 | Ranges across Fixr, Bob Vila, This Old House, LendEDU |
| Attic | $1,000 | $9,000 | Ranges across Fixr, Bob Vila, This Old House, LendEDU |
| Air ducts | $600 | $2,000 | Ranges across Fixr, Bob Vila, This Old House, LendEDU |
| Whole HVAC system | $3,000 | $10,000 | Ranges across Fixr, Bob Vila, This Old House, LendEDU |
| Whole house | $10,000 | $30,000 | Ranges across Fixr, Bob Vila, This Old House, LendEDU |
| Mold inspection | $303 | $1,075 | HomeAdvisor (Jun 2026) |
| Clearance testing | $200 | $500 | PuroClean (estimate) |
Data as of October 19, 2026. Insurance may pay part of the cost if the mold came from a covered sudden water loss, usually up to a mold sublimit. See does homeowners insurance cover mold.
Sources
- Mold remediation cost, This Old House (updated March 11, 2026)
- Mold remediation cost, LendEDU (updated September 4, 2026)
- Mold remediation cost, SERVPRO (September 14, 2026)
- Mold remediation cost, Fixr (updated August 29, 2025)
- Mold testing and inspection cost, HomeAdvisor (updated June 19, 2026)
- Mold cleanup in your home, U.S. EPA (updated June 4, 2026)
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