Mold Remediation Cost: What to Charge and Expect to Pay (2026)
By Will Berry·5 min read·Updated June 2026
Mold remediation usually costs $500 to $6,000, with a typical job near $2,500. A small contained patch under 10 square feet runs $500 to $1,500, an average room or basement $1,500 to $4,000, and whole-home or HVAC remediation $4,000 to $10,000.
The short answer
Hidden mold inside walls or ductwork costs far more than a surface patch, because it needs containment, removal, and air scrubbing rather than a simple wipe-down.
What changes the price
- Size and location of the mold (surface vs inside walls or HVAC).
- Containment and air scrubbing required.
- Whether the underlying leak must be fixed first.
- Post-remediation testing and clearance.
If you are the one setting the price
Quote after an inspection, never sight unseen, because hidden mold changes the job entirely. Bundle the leak repair and a clearance test into the price so the client gets a guaranteed result, not a scrub that comes back in a month. Use the free calculator to ground your job pricing for your area.
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