Mold Remediation cost breakdown
At a mid-range, national-average baseline, a typical mold remediation project is estimated at $1,500 to $4,000. The table below breaks the cost down so you can see where your project is likely to land.
| Affected area | Typical cost | Notes |
|---|---|---|
| Small (under 10 sq ft) | $500 to $1,500 | Surface mold |
| Moderate (10 to 30 sq ft) | $1,500 to $4,000 | One area |
| Large (30 to 100 sq ft) | $3,000 to $8,000 | Multiple areas |
| Whole-home or HVAC | $6,000 to $15,000 | Extensive |
What drives mold remediation cost
- Size of the affected area.
- Location: accessible surface versus behind walls or in a crawlspace.
- Type of surface and materials that must be removed.
- Whether the moisture source must also be fixed.
- Containment, air filtration, and testing.
- Regional labor rates.
Key cost factors
Size and hidden mold
Small, visible surface mold is inexpensive to treat. Mold behind walls, under floors, in crawlspaces, or in HVAC systems costs much more because of the demolition and containment needed to reach it.
Fix the source
Mold comes back if the moisture source remains. Lasting remediation includes finding and fixing the leak or humidity problem, which adds cost but prevents repeat work.
Testing and containment
Professional jobs include containment to stop spores spreading, air filtration, and sometimes pre- and post-testing, all of which add to the total.