Mold Remediation Cost Calculator — How Much Does Mold Removal Cost?

Get a fair ballpark for mold remediation before the inspector arrives. Enter the affected square footage and the going per-square-foot rate, and you’ll see a total, a realistic low–high range, and how the cost splits between removal and testing.

Quick answer

Most mold remediation runs about $15–$30 per square foot of affected area, plus $300–$500 for inspection and post-clearance testing. A typical 120 sq ft job lands around $3,000 — usually somewhere between $2,500 and $3,900 depending on access, mold type, and how much material has to be torn out.

How this calculator works

We multiply the affected area by the per-square-foot remediation rate to get the core removal-and-cleanup cost, then add the flat inspection and post-clearance testing fee. The low–high range reflects how much real jobs swing once containment, demolition, and access are factored in — treat the total as the middle of a band, not an exact quote.

What changes the number

Mold type matters — toxic black mold (Stachybotrys) costs more to contain and dispose of than common surface mold.
Hidden mold behind drywall, under flooring, or inside HVAC means demolition and rebuild on top of the remediation itself.
Tight or unfinished spaces (crawl spaces, attics) raise the labor rate; finished rooms with easy access sit at the low end.
The underlying water source must be fixed first — a leaking pipe or roof left unrepaired guarantees the mold returns.

Frequently asked questions

How much does mold remediation cost on average?

A typical whole-room job runs $1,500–$4,000, with most homeowners landing near $2,500. Small isolated patches can be a few hundred dollars; whole-house or black-mold jobs can exceed $10,000–$30,000.

What’s the difference between mold removal and remediation?

Removal means physically taking mold out; remediation is the full process — containment, removal, cleaning, drying, and fixing the moisture source so it doesn’t come back. Most professional quotes are for remediation.

Is mold remediation covered by insurance?

Sometimes. If the mold resulted from a sudden, covered event (like a burst pipe), it’s often covered; mold from long-term leaks or humidity is usually excluded. Use our mold insurance claim calculator to weigh whether to file.