Illinois · 2026 pricing

Mold remediation cost in Illinois

A typical 50 sqft basement remediation in Illinois runs $1,809–$3,697 with a state cost factor of 1.10× vs. the US average. Severity level is the largest single driver.

Mold Remediation Cost Calculator

State*

ZIP code*

Affected area (sq ft)50

Location

Severity

Level 1: Surface (<10 sqft)Level 2: Minor (10-30)Level 3: Moderate (30-100)Level 4: Structural (>100)

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.

Why Illinois runs above the US average

Mold remediation pricing in Illinois reflects three regional factors: licensed remediation contractor wages, humidity-driven demand density, and the supply of IICRC-certified firms. The 1.10× factor is calibrated from BLS data and 2025 HomeAdvisor regional cost reports.

Local note · Illinois: Chicago region IDPH licensing requirements are among the strictest; verify the contractor's IDPH mold remediation license.

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