Williams Roofing vs Renergy Roofing
East Bay Roofing Comparison · Updated January 2026
| Williams Roofing | Renergy Roofing | |
|---|---|---|
| Rating | ★ 4.6 | ★ 5.0 |
| Years Licensed | 32 years | 1 years |
| License # | 687391 | 1127157 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Fremont, CA | Walnut Creek, CA |
| Website | williamsroofing.net | renergyroofing.com |
Our Analysis
Renergy Roofing is based in Walnut Creek in Contra Costa County and has been licensed for 1 year with an active license status. It also carries workers’ compensation coverage and maintains a $25,000 bond. Feedback highlights a professional and organized process from estimate through completion, with emphasis on transparent explanations and straightforward pricing. Customers frequently mention punctual scheduling, efficient execution, attention to detail during installation, and keeping job sites clean. Some reviews also note guidance on materials and roofing components, including considerations for future solar panel plans.
Side-by-side, the main differences in the provided data are location and length of licensure, while both share similar insurance and bonding credentials and are described as communicative during projects.
Why choose Williams Roofing?
- ✓ You want a Fremont-based contractor serving Alameda County and nearby areas for residential roof repair or replacement.
- ✓ Length of licensure is a key factor for you: Williams Roofing has 32 years licensed with an active status.
- ✓ Your project involves common repair needs like leak troubleshooting or work around roof components such as skylights.
- ✓ You value responsiveness during scheduling and clear communication through the job, based on customer feedback themes.
Why choose Renergy Roofing?
- ✓ You prefer a Walnut Creek-based contractor serving Contra Costa County and surrounding areas.
- ✓ You want an active-licensed company that is described as organized, punctual, and detail-oriented during installation.
- ✓ Job-site cleanliness and respect for the property are important to you, as these are recurring points in customer feedback.
- ✓ You want guidance on materials and roofing components, including planning considerations such as future solar panel installation.
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Frequently Asked Questions
Yes. Both Williams Roofing and Renergy Roofing are listed as carrying workers’ compensation coverage and maintaining a $25,000 bond.
Williams Roofing is listed as licensed for 32 years, while Renergy Roofing is listed as licensed for 1 year. Both have active license status.
Williams Roofing is based in Fremont (Alameda County). Renergy Roofing is based in Walnut Creek (Contra Costa County).
Williams Roofing is described as providing residential roof replacement and repair, with feedback referencing leak fixes. Renergy Roofing feedback mentions responsiveness when urgent leak concerns arise and describes roof replacement and related services.
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.