Black Diamond Roofing vs Renergy Roofing
East Bay Roofing Comparison · Updated January 2026
| Black Diamond Roofing | Renergy Roofing | |
|---|---|---|
| Rating | ★ 4.0 | ★ 5.0 |
| Years Licensed | 11 years | 1 years |
| License # | 996268 | 1127157 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Concord, CA | Walnut Creek, CA |
| Website | www.blackdiamondroofs.com | renergyroofing.com |
Our Analysis
Renergy Roofing is based in Walnut Creek and also serves Contra Costa County. It reports 1 year licensed with an active license status, workers’ compensation coverage, and a $25,000 bond. Customer feedback frequently emphasizes being professional and organized, with clear communication from estimate through completion. Reviews commonly mention straightforward pricing explanations, punctual scheduling, efficient execution, attention to detail, clean job sites, and responsiveness for inspections or urgent leak concerns. Some customers also cite guidance on materials and components, including recommendations aligned with future solar panel plans.
Why choose Black Diamond Roofing?
- ✓ You want a Concord-based contractor serving Contra Costa County, with experience described as supporting HOA coordination and ongoing community-managed work.
- ✓ Licensing tenure is a priority: Black Diamond Roofing reports 11 years licensed, plus active status, workers’ compensation coverage, and a $25,000 bond.
- ✓ You value punctuality and a problem-solving approach, which are recurring themes in customer descriptions.
- ✓ You are comfortable with a process that may include follow-up steps (such as a separate proposal after an initial assessment), as noted in some customer feedback.
Why choose Renergy Roofing?
- ✓ You prefer a Walnut Creek-based contractor serving Contra Costa County, with customer feedback emphasizing organization and a structured project process.
- ✓ You want clear communication from estimate through completion, including transparent explanations of work and pricing.
- ✓ Jobsite practices matter: reviews commonly mention punctual scheduling, efficient execution, attention to detail, and clean work areas.
- ✓ You may benefit from guidance on materials and components, including recommendations that consider future plans such as adding solar panels.
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Frequently Asked Questions
Yes. Both Black Diamond Roofing and Renergy Roofing report workers’ compensation coverage and a $25,000 bond, and both list an active license status.
Black Diamond Roofing reports 11 years licensed, while Renergy Roofing reports 1 year licensed.
Black Diamond Roofing’s description specifically mentions coordinating projects through homeowner associations.
Renergy Roofing’s review summary includes customers noting guidance on materials and recommendations suited to needs such as future solar panel plans.
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.