Sierra Roofing and Solar vs Williams Roofing
East Bay Roofing Comparison · Updated January 2026
| Sierra Roofing and Solar | Williams Roofing | |
|---|---|---|
| Rating | ★ 4.8 | ★ 4.6 |
| Years Licensed | 22 years | 32 years |
| License # | 835854 | 687391 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Dublin, CA | Fremont, CA |
| Website | www.sierraroofing.com | williamsroofing.net |
Our Analysis
Experience length is another difference: Sierra Roofing and Solar is listed as licensed for 22 years, while Williams Roofing is listed as licensed for 32 years. In terms of services, Sierra Roofing and Solar is associated with a broader mix of exterior and energy-related projects in the provided data, including roof inspections, leak diagnostics and repairs, full roof replacements, gutter installation and repair, and solar-related work. Customer feedback also mentions detailed estimates, on-site evaluations with explanations, and cleanup practices.
Williams Roofing is most often referenced for roof repairs and full roof replacements, including addressing leaks. Customer feedback emphasizes responsiveness, timely scheduling, clear communication, and a straightforward approach to recommendations, including comments that the company does not push unnecessary work and provides fair pricing. Both are described as professional and communicative through quoting and project completion, with some Sierra customers noting scheduling may require planning ahead.
Why choose Sierra Roofing and Solar?
- ✓ You want one contractor referenced for roofing plus related work like gutters and solar, based on the described project range.
- ✓ Detailed on-site evaluations and estimates with explanations are important to you, as these are commonly mentioned in customer feedback.
- ✓ You value cleanup practices and project communication as part of the overall service experience.
- ✓ Your property is closer to Dublin or you prefer a Dublin-based contractor serving Alameda County.
Why choose Williams Roofing?
- ✓ You are primarily focused on roof repairs or full roof replacement, including resolving leaks, which are the most commonly referenced project types.
- ✓ You prioritize timely scheduling and clear, straightforward communication from first contact through completion.
- ✓ You prefer a contractor described as not pushing unnecessary work and keeping recommendations focused.
- ✓ Your property is closer to Fremont or you prefer a Fremont-based contractor serving Alameda County.
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Frequently Asked Questions
Yes. Both Sierra Roofing and Solar and Williams Roofing are listed with active license status and workers’ compensation coverage.
Williams Roofing is listed as licensed for 32 years, while Sierra Roofing and Solar is listed as licensed for 22 years.
Gutter installation/repair and solar-related work are mentioned for Sierra Roofing and Solar in the provided information. For Williams Roofing, the provided information focuses on roofing repairs and full roof replacements.
Both companies are listed as maintaining a $25,000 bond.
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.