Cost Calculator · Updated 2026
How Much Does Mold Remediation Cost in California?
California remediation typically runs $1,500–$7,000, above national averages on labor. Coastal fog-belt homes and post-storm moisture drive most projects:
| Scope | Typical Range | Notes |
|---|---|---|
| Small contained area | $700 – $2,000 | Single surface |
| Single room + cavity | $2,000 – $5,000 | Containment + removal |
| Multi-room | $5,000 – $14,000 | Includes rebuild phase |
| HVAC decontamination | $1,200 – $3,800 | When ducts test positive |
| Verification testing | $350 – $900 | The proof it worked |
Ranges are national/regional ballparks from 2026 market data — not quotes. Your exact price depends on your home, severity, and provider. Comparing multiple local quotes through Any Best is free and no-obligation.
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