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Acker Roofing vs Black Diamond Roofing
Contra Costa Roofing Contractors Comparison · Updated March 2026
Both are established Concord contractors with identical credentials, but Acker handles a much wider range of project types while Black Diamond specializes in HOA work.
| Acker Roofing | Black Diamond Roofing | |
|---|---|---|
| Rating | ★ 4.9 | ★ 4.0 |
| Years Licensed | 12 years | 11 years |
| License # | 993338 | 996268 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Concord, CA | Concord, CA |
| Website | ackerroofing.com | www.blackdiamondroofs.com |
Key Differences
What Customers Say
Acker Roofing
Customers consistently praise Acker for responsive communication, thorough inspections with clear explanations, and handling diverse project types from emergency repairs to complete reroofs with coordination across trades.
Black Diamond Roofing
Black Diamond's feedback centers on HOA and property management relationships, emphasizing punctuality, problem-solving for community needs, and ongoing coordination across multiple properties.
Key Takeaway: Acker's reviews describe varied residential project complexity and technical troubleshooting, while Black Diamond's feedback focuses almost exclusively on HOA coordination with limited detail on project scope or diagnostic capability.
Customer Reviews
Acker Roofing
They are quick to respond and have work quality they honor the work warranty no questions asked why rain or shine they come to repair
Acker Roofing did a great job of replacing our roof. They listened to my specific needs, found a good solution, and troubleshooted problem areas. They were able to fit us into their schedule and the j...
Dean and Acker came recommended to us by a State Farm insurance agent, and we can see why. Dean quickly turned around a fair quote for roofing our house. Rodigo and his partner worked diligently on ev...
Black Diamond Roofing
I am an Association Manager for HOA Communities and have worked with Black Diamon Roofing for many years. I have mostly worked with Melissa Wood and Monique Gracia. They are always willing to go above...
Monique is a problem solver extraordinaire! Professional, punctual team. Thank you!
Consider Acker Roofing if...
- ✓ You're a residential homeowner dealing with a complex issue like storm damage, leak diagnosis around chimneys or patio tie-ins, or hidden dry rot that requires troubleshooting beyond surface repair
- ✓ Your project involves coordination with other trades, particularly solar panel removal and reinstallation during a reroof
- ✓ You need a full roof replacement or tear-off and want a contractor with documented experience managing permits, inspections, and weather delays
- ✓ You value detailed explanations during inspections and want a contractor accustomed to working directly with individual homeowners on varied project types
Consider Black Diamond Roofing if...
- ✓ You're an HOA board member or property manager coordinating roofing work across multiple units or community buildings and want a contractor experienced in that workflow
- ✓ Your project involves ongoing maintenance relationships rather than a one-time complex residential job
- ✓ You prioritize punctuality and coordination over breadth of technical troubleshooting, particularly for scheduled inspections and repeat service
- ✓ You need roof repairs or evaluations but aren't facing a full replacement or complex diagnostic challenge
Questions to Ask Before Hiring
- → Ask Black Diamond specifically about their experience with full residential reroofs, solar coordination, and complex leak diagnosis if your project goes beyond basic repair
- → Ask both companies for references from projects similar to yours in scope: if you need a full tear-off with solar coordination, confirm they've handled that workflow recently
- → If working with Black Diamond for residential work, ask how their crew composition and project management differs from their HOA work
- → Ask about typical timelines and crew availability, particularly if you need flexible scheduling around weather or urgent repairs
The Bottom Line
For most residential homeowners needing roof work in Contra Costa County, Acker Roofing is the clearer choice. Both contractors have strong credentials and local presence, but Acker demonstrates broader residential experience across repair complexity, full replacements, solar coordination, and diagnostic troubleshooting. Black Diamond's strength lies in HOA and property management relationships, which is valuable for that specific context but leaves questions about depth of residential capability. If you're an individual homeowner facing anything beyond basic repair, Acker's track record provides more confidence. Get estimates from both if you'd like pricing comparison, but expect Acker to offer more detailed inspection and project planning.
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Frequently Asked Questions
Not necessarily, but the customer feedback provides limited evidence of complex residential work like full reroofs, solar coordination, or diagnostic troubleshooting. If your project is straightforward repair or evaluation, their credentials support that work. For larger or more complex residential jobs, ask directly about recent similar projects and request references from individual homeowners, not just property managers.
No, 12 versus 11 years is functionally equivalent. Both are in the established range, meaning they've weathered business cycles and built institutional knowledge. The meaningful difference here is project diversity, not tenure.
Acker has documented customer feedback describing solar panel removal and reinstallation coordination during reroofs, suggesting established workflow for that scenario. Black Diamond's reviews don't mention solar work, so if that's part of your project, confirm their experience and process directly.
Focus on inspection thoroughness and how each contractor addresses potential complications like dry rot, flashing details, or permit coordination. Ask both what they'd do if they discover underlying damage during tear-off and how change orders are handled. Acker's reviews emphasize clear explanations during inspections, which can help you assess their diagnostic approach during the estimate visit.
Looking for the Best?
See our ranked list of top roofing contractors in Contra Costa.
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How We Compare Contractors
License Verification
All license data is sourced from official California CSLB records and verified regularly.
Review Analysis
Customer reviews are aggregated from Google and analyzed to identify patterns in service quality.
Detailed Comparison
We analyze credentials, insurance, experience, and feedback to highlight meaningful differences.
Not all licensed contractors are created equal. While a valid license is the baseline requirement in California, contractors can vary significantly in experience, insurance coverage, and customer satisfaction.
- Experience matters: A contractor with 15+ years of experience has likely encountered and solved problems that newer contractors haven't faced yet.
- Workers' compensation protects you: If a contractor without workers' comp insurance has an employee injured on your property, you could be held liable.
- Reviews reveal patterns: Individual reviews can be misleading, but patterns across many reviews often reveal a contractor's true strengths and weaknesses.
- Bond amounts vary: A contractor's bond provides financial protection if they fail to complete work as agreed. Higher bonds offer more protection.
Taking time to compare contractors on these factors can save you from costly mistakes and help ensure your project is completed by a qualified professional.
Data Sources: License information from California CSLB. Ratings and reviews from Google. Last verified March 12, 2026.
This comparison is based on publicly available information. We recommend getting multiple quotes and verifying all credentials directly before hiring.
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