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Gramajo Roofing Inc vs Capstone Roofing Inc
Sonoma Roofing Contractors Comparison · Updated March 2026
Capstone Roofing brings 34 years of licensed experience compared to Gramajo's 7, with more consistent feedback on process efficiency and cleanup.
| Gramajo Roofing Inc | Capstone Roofing Inc | |
|---|---|---|
| Rating | ★ 4.5 | ★ 4.9 |
| Years Licensed | 7 years | 34 years |
| License # | 1043262 | 629383 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Santa Rosa, CA | Santa Rosa, CA |
| Website | www.gramajoroofing.com | www.capstoneroofing.biz |
Key Differences
What Customers Say
Gramajo Roofing Inc
Customers highlight Gramajo's willingness to listen to concerns and provide helpful explanations, with reasonable pricing compared to competitors, though cleanup expectations need clarification on larger projects.
Capstone Roofing Inc
Customers consistently describe Capstone's organized, efficient process with one-day completions and thorough cleanup as standard, supported by clear communication from estimate through final walkthrough.
Key Takeaway: Capstone's feedback centers on execution speed and process reliability, while Gramajo's centers on personal attention and pricing competitiveness, reflecting the difference between veteran-level systems and a growing contractor still building operational polish.
Customer Reviews
Gramajo Roofing Inc
This is the roofing company to use. I had many estimates written but this contractor listened carefully to my concerns and requests for additional work including new down spouts, replacement of skylig...
I was first introduced to Gramajo Roofing this past spring through a carpenter who I worked with to get some wood repairs done to our 2-story 2150 sqft house on the border of the city of Sonoma. I had...
This crew is amazing! They worked through some serious heat and still did a super job. I needed a completely new roof and new gutters and I got them. I'll go with a local owned team (hats off to Isaia...
Capstone Roofing Inc
These guys are amazing. They replaced the roof in one day and price was very competitive. The crew was so nice. I recommend them and would hire them again.
When I needed a new roof recently, I first turned to Capstone Roofing for an estimate. My husband and I had a new roof installed on our former home in 2001 by Capstone. Our experiences with the owner,...
The Capstone did a great job and finished in just one day! They even did some nice follow up for us by cleaning up our rain gutters.
Consider Gramajo Roofing Inc if...
- ✓ You're prioritizing lower bids and Gramajo's pricing comes in noticeably below other estimates for a straightforward shingle replacement on a newer roof.
- ✓ You value a contractor who takes time to explain options and responds attentively to questions, particularly if you're unfamiliar with roofing decisions.
- ✓ Your project is residential-scale with standard scope, where 7 years of experience is sufficient and the cost savings matter more than veteran-level expertise.
Consider Capstone Roofing Inc if...
- ✓ Your roof is older and likely to reveal hidden damage once shingles come off, where 34 years of problem-solving experience becomes critical.
- ✓ You need the project completed quickly with minimal disruption, and Capstone's track record of one-day completions and thorough same-day cleanup matches your timeline.
- ✓ You're coordinating roofing with other home projects like solar installation or have insurance claim documentation needs, where Capstone's organized process and assistance history provide reassurance.
- ✓ You're willing to pay for the reliability and systems that come with a veteran contractor who has managed thousands of projects.
Questions to Ask Before Hiring
- → Ask Gramajo specifically how they plan to manage jobsite cleanup and crew conduct if your project involves multi-unit properties or shared spaces, given the mixed feedback on their apartment complex work.
- → Ask Capstone for references from projects similar in scale to yours, particularly if you're hiring them for multi-unit work where some post-installation concerns have been noted.
- → Confirm with both contractors how they handle unexpected wood damage or structural issues discovered mid-project, including cost approval processes and timeline impacts.
The Bottom Line
Capstone Roofing's 34 years of licensed experience, consistent operational execution, and track record of one-day completions with thorough cleanup make it the stronger choice for most homeowners, particularly those with older roofs, tight timelines, or projects requiring coordination with insurance or other contractors. The veteran-level expertise matters when unexpected damage appears or complications arise mid-project. Gramajo Roofing offers a solid 7-year track record with attentive communication and competitive pricing, making it a reasonable option if your roof is newer, the scope is straightforward, and cost savings outweigh the benefits of deeper experience. Get detailed bids from both, but expect to pay somewhat more for Capstone's systems and reliability.
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Frequently Asked Questions
It matters most when complications arise. On a straightforward shingle replacement where everything goes as expected, both contractors can execute well. But if your roof deck has hidden rot, your flashing needs custom fabrication, or weather disrupts the schedule, Capstone's 34 years means they've solved similar problems hundreds of times. Gramajo at 7 years is still building that problem-solving library.
The cleanup issue for Gramajo appeared on a larger apartment complex project, not typical residential work. Capstone's consistent mentions of thorough cleanup across many reviews suggest it's built into their process as standard procedure. If you're hiring for a single-family home, ask Gramajo directly about their cleanup protocol and whether the crew lead will do a final walkthrough with you.
If both bids are similar, Capstone's track record of organized execution and speed provides clear value. If Gramajo comes in significantly lower, you're trading some process polish and decades of experience for cost savings. For older roofs or complex projects, that trade-off rarely makes sense. For newer roofs with straightforward scope, it may.
Neither has overwhelming negative feedback, but both show that larger projects introduce complexity around cleanup, coordination, and quality control. If you're managing a multi-unit property, ask both contractors for specific multi-unit references, how they handle tenant communication, and what their site supervision structure looks like for projects spanning multiple days or buildings.
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See our ranked list of top roofing contractors in Sonoma.
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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 14, 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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