Black Diamond Roofing vs Roof By Tom
East Bay Roofing Comparison · Updated January 2026
| Black Diamond Roofing | Roof By Tom | |
|---|---|---|
| Rating | ★ 4.0 | ★ 4.8 |
| Years Licensed | 11 years | 2 years |
| License # | 996268 | 1112980 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Concord, CA | Moraga, CA |
| Website | www.blackdiamondroofs.com | roofbytom.com |
Our Analysis
Roof By Tom is located in Moraga and also serves Contra Costa County. It has been licensed for 2 years with an active status, and it also carries workers’ compensation coverage and a $25,000 bond. The review summary emphasizes professional and efficient execution, timely scheduling, clear explanations of scope, and consistent communication from estimate through completion. It also mentions crews arriving on time, working efficiently, and leaving the property clean. Reported project types include full roof replacements, overlays, leak repairs, tile-roof repairs, and some gutter-related work, with a small number of reviews noting dissatisfaction with specific outcomes or workmanship.
Why choose Black Diamond Roofing?
- ✓ You want a Concord-based contractor serving Contra Costa County and nearby residential or community-managed properties.
- ✓ HOA coordination is specifically mentioned in the company description and customer feedback.
- ✓ You prefer a contractor with longer licensing history (11 years) while maintaining active status, workers’ comp, and a $25,000 bond.
- ✓ You are comfortable with a process that may include follow-up steps, such as receiving a separate proposal after an initial assessment.
Why choose Roof By Tom?
- ✓ You want a Moraga-based contractor serving Contra Costa County with active license status, workers’ comp, and a $25,000 bond.
- ✓ You value an approach described as efficient, with timely scheduling and clear explanations of scope from estimate through completion.
- ✓ Your project aligns with work mentioned in feedback, such as roof replacements, overlays, leak repairs, tile-roof repairs, or some gutter-related work.
- ✓ You prioritize job-site cleanliness and consistent communication as recurring themes in customer summaries.
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Frequently Asked Questions
Yes. Both Black Diamond Roofing and Roof By Tom are listed as carrying workers’ compensation coverage and maintaining a $25,000 bond.
Black Diamond Roofing is based in Concord, and Roof By Tom is based in Moraga. Both are described as serving Contra Costa County, California.
Black Diamond Roofing is listed as licensed for 11 years, while Roof By Tom is listed as licensed for 2 years. Both licenses are shown as active.
Black Diamond Roofing is described as handling roofing-related services and repairs, including HOA-coordinated projects. Roof By Tom’s feedback mentions full roof replacements, overlays, leak repairs, tile-roof repairs, and some gutter work.
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.