Bay Valley Roofing & Solar vs Star Waterproofing and Roofing
East Bay Roofing Comparison · Updated January 2026
| Bay Valley Roofing & Solar | Star Waterproofing and Roofing | |
|---|---|---|
| Rating | ★ 4.8 | ★ 4.3 |
| Years Licensed | 13 years | 8 years |
| License # | 982745 | 1036279 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Concord, CA | Walnut Creek, CA |
| Website | www.bayvalleyroofing.com | www.starwaterproofingco.com |
Our Analysis
Service emphasis differs. Bay Valley Roofing & Solar is described as taking on roofing projects that include solar components, such as solar shingle installations, and customers also reference related roofing items like vents and gutters. Customer feedback commonly highlights a structured process: inspections, documentation, clear explanations of options, and coordination from estimate through completion, including support for customers managing projects remotely.
Star Waterproofing and Roofing is commonly described as strong in diagnosing leaks and explaining recommended repairs. Customers frequently mention detailed estimates, responsiveness, and protecting surrounding areas during construction. Reviews also reference work on decks, balconies, and flat or low-slope roofs, including multi-unit and commercial buildings. Feedback includes some reported dissatisfaction related to communication or service experiences, alongside many reports of professional, timely project delivery and follow-up support.
Why choose Bay Valley Roofing & Solar?
- ✓ You want a roofing contractor that also takes on projects with solar components, including solar shingle installations.
- ✓ You value a structured process with inspections, documentation, and coordinated project steps from estimate through completion.
- ✓ You may need help managing a project remotely and want consistent communication before and during the work.
- ✓ Your scope includes roof replacement or repair plus related roof items such as vents and gutters as part of the overall job.
Why choose Star Waterproofing and Roofing?
- ✓ You need focused leak diagnosis and repair recommendations, with an emphasis on explaining what is found and what is proposed.
- ✓ Your project involves decks, balconies, or flat/low-slope roofing, including multi-unit or commercial building work.
- ✓ You prioritize detailed estimates, scheduling responsiveness, and efforts to protect surrounding areas during construction.
- ✓ You are comfortable confirming communication expectations up front, since some customers report occasional concerns in this area.
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Frequently Asked Questions
Yes. Both companies are listed with active license status, carry workers’ compensation coverage, and maintain a $25,000 bond.
Bay Valley Roofing & Solar is based in Concord, and Star Waterproofing and Roofing is based in Walnut Creek, both within Contra Costa County.
Bay Valley Roofing & Solar is described as taking on roofing projects that include solar components, such as solar shingle installations.
Star Waterproofing and Roofing is referenced for work on decks, balconies, and flat or low-slope roofs, including projects for multi-unit and commercial buildings.
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.