Acker Roofing vs Williams Roofing
East Bay Roofing Comparison · Updated January 2026
| Acker Roofing | Williams Roofing | |
|---|---|---|
| Rating | ★ 4.9 | ★ 4.6 |
| Years Licensed | 12 years | 32 years |
| License # | 993338 | 687391 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Concord, CA | Fremont, CA |
| Website | ackerroofing.com | williamsroofing.net |
Our Analysis
Williams Roofing is based in Fremont in Alameda County and has been licensed for 32 years with an active license. Customer feedback commonly references roof repairs and full roof replacements, including addressing leaks and completing projects as promised. Reviews emphasize timely scheduling, clear communication, and a straightforward approach to recommendations, with comments indicating the company does not push unnecessary work and provides fair pricing.
Both companies carry workers’ compensation coverage and maintain $25,000 bonds. In selection, the most concrete differences in the provided data are service-area base, years licensed, and the range of adjacent services and coordination described in customer accounts.
Why choose Acker Roofing?
- ✓ You want a contractor based in Concord/Contra Costa County, with customer references to work in nearby communities.
- ✓ Your project may involve inspections, cleaning, tear-off replacement, or time-sensitive leak/storm issues, as these are commonly referenced.
- ✓ You need coordination beyond roofing itself (for example, solar panel removal/reinstallation or permit/inspection coordination) based on customer accounts.
- ✓ You value detailed explanations and thorough inspections, which are recurring themes in customer feedback.
Why choose Williams Roofing?
- ✓ You prefer a contractor based in Fremont/Alameda County and want a longer licensing tenure (32 years).
- ✓ Your needs are centered on roof repairs or full replacements, including leak-related work, which are frequently mentioned.
- ✓ You prioritize timely scheduling and clear communication throughout quoting and completion, as described by customers.
- ✓ You want a straightforward recommendation style, with customer comments indicating the company does not push unnecessary work and discusses pricing as fair.
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Frequently Asked Questions
Yes. Both Acker Roofing and Williams Roofing are listed with active license status and workers’ compensation coverage.
Yes. Each company is listed as maintaining a $25,000 bond.
Acker Roofing is based in Concord (Contra Costa County). Williams Roofing is based in Fremont (Alameda County).
Williams Roofing is listed as licensed for 32 years, while Acker Roofing is listed as licensed for 12 years.
Other East Bay Roofing Comparisons
Data Sources: License information from California CSLB. Ratings and reviews from Google. Last verified January 13, 2026.
This comparison is based on publicly available information. We recommend getting multiple quotes and verifying all credentials directly before hiring.