Cornerstone Cleaning & Restoration, Inc.

Cornerstone Cleaning & Restoration, Inc. holds a 5-star rating across 95 Google reviews, which carries real weight for Elgin homeowners. The city's climate - averaging 70% relative humidity and 38 inches of annual rainfall - creates conditions where mold thrives, especially in homes built around 1977, when moisture barriers weren't always standard. A strong track record in this environment suggests the company understands the specific challenges local properties face.

Before hiring, verify that Cornerstone holds IICRC S520 certification and current general liability insurance, since Illinois doesn't require a specific mold remediation license. One important caveat: the company is listed as a mold inspector, which creates a potential conflict of interest under industry standards - inspectors who also perform remediation may have financial incentive to recommend work. If you need an inspection, consider getting one from an independent inspector (typically $200-$600 in this region) before deciding on remediation, and always confirm credentials directly rather than relying on listings alone.