Two Brothers Roofing vs Black Diamond Roofing
East Bay Roofing Comparison · Updated January 2026
| Two Brothers Roofing | Black Diamond Roofing | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.0 |
| Years Licensed | 46 years | 11 years |
| License # | 378564 | 996268 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Castro Valley, CA | Concord, CA |
| Website | www.tbroof.com | www.blackdiamondroofs.com |
Our Analysis
Two Brothers Roofing has a longer licensing history (46 years) compared with Black Diamond Roofing (11 years). Customer-referenced services for Two Brothers include roof replacement, shingle work, and gutter-related work (installation and minor repairs). Customers also describe multi-step projects with separate crews handling phases such as tear-off, roofing, and gutters, along with repeated mentions of cleanup after completion.
For Black Diamond Roofing, customer feedback highlights professionalism, punctuality, and communication/coordination that can support ongoing work for HOA communities. Reviews also note that some jobs may involve additional steps, such as returning with a separate proposal after an initial assessment. Overall, the provided feedback for Black Diamond reflects mixed experiences, with both positive notes on responsiveness and professionalism and some reports of less positive service outcomes.
Why choose Two Brothers Roofing?
- ✓ You want a contractor in or near Castro Valley and surrounding Alameda County communities.
- ✓ Your project includes roof replacement, shingle work, and/or gutter installation or minor gutter repairs.
- ✓ You prefer a multi-step workflow with separate crews for phases like tear-off, roofing, and gutters.
- ✓ Clear communication during estimating and scheduling, plus attention to cleanup after the job, are priorities for you.
Why choose Black Diamond Roofing?
- ✓ You are located near Concord or in Contra Costa County and want a contractor based in that area.
- ✓ You value punctuality and a problem-solving approach during service interactions.
- ✓ You need coordination that can support ongoing work for HOA communities.
- ✓ You are comfortable with a process where an initial assessment may be followed by a separate proposal step before work proceeds.
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Frequently Asked Questions
Yes. Both Two Brothers Roofing and Black Diamond Roofing are listed as carrying workers’ compensation coverage and maintaining a $25,000 bond.
Two Brothers Roofing is based in Castro Valley, Alameda County, California. Black Diamond Roofing is based in Concord, Contra Costa County, California.
Customer-referenced services include roof replacement, shingle work, and gutter-related work, including installation and minor repairs. Customers also describe separate crews handling different phases of the project.
Yes. Customer feedback for Black Diamond Roofing mentions communication and coordination that can support ongoing work for HOA communities.
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.