IICRC S520 · 2026 pricing
Get an honest mold remediation estimate before the contractor walks in.
Severity level, location, and state — three inputs that drive 80% of the cost. No email required to see the number. Add it at the end if you want the PDF and 1–3 vetted local pros.
Mold Remediation Cost Calculator
50
Estimated cost
$995–$2,321
Typical: $1,658 · state factor 1.02×
Line items
- Base area cost$1,658
Estimates are educational — actual quotes from local pros may differ based on site conditions, permits, and seasonal demand.
How the estimate is calculated
The base is a per-sqft remediation cost ($15–$35 typical), scaled by the four IICRC severity levels (Level 1 = surface, Level 4 = structural) and location-specific factors (HVAC contamination is ~2× bathroom remediation due to containment requirements). We then apply a state cost factor calibrated from BLS occupational wage data.