Compare Local Pros
Gomaxxx Inc vs Sun Marshall Solar Services
Solano Solar Contractors Comparison · Updated March 2026
Gomaxxx Inc offers proven customer satisfaction and competitive pricing, while Sun Marshall brings nearly double the industry experience but lacks customer feedback.
| Gomaxxx Inc | Sun Marshall Solar Services | |
|---|---|---|
| Rating | ★ 5.0 | ★ 5.0 |
| Years Licensed | 8 years | 15 years |
| License # | 1032117 | 952018 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Benicia, CA | Vallejo, CA |
| Website | www.gomaxxx.com | sunmarshall.com |
Key Differences
What Customers Say
Gomaxxx Inc
Customers consistently praise Gomaxxx for competitive pricing well below competitor quotes, efficient installations completed faster than expected, and responsive communication with clear explanations throughout the process.
Key Takeaway: Gomaxxx provides substantial verifiable customer feedback demonstrating service quality and operational approach, while Sun Marshall lacks available reviews to assess current customer experience despite longer industry tenure.
Customer Reviews
Gomaxxx Inc
Mr Hoffmann was very nice and he is very patient and very nice job.
Gomaxxx gave a fair price and made my solar installation, utterly painless. They showed up when they said they would and operated professionally especially while interacting with my tenants. I woul...
So professional, calm, timely, cost sensitive. Great process to understand our need and goal. Highly recommend!!!
Sun Marshall Solar Services
No reviews available
Consider Gomaxxx Inc if...
- ✓ You want verifiable evidence of competitive pricing, with multiple customers reporting significantly lower quotes than competing bids
- ✓ Project timeline matters and you value contractors with demonstrated fast completion records
- ✓ You prefer working with owner-operated companies offering personalized attention and direct communication throughout the installation
- ✓ You want confidence in the customer experience beyond just technical qualifications
Consider Sun Marshall Solar Services if...
- ✓ Your project involves complex electrical panel upgrades or unusual roof conditions where 15 years of diverse problem-solving experience becomes valuable
- ✓ You're installing solar on a commercial property where veteran contractor experience navigating commercial permits and utility requirements provides additional security
- ✓ You're comfortable evaluating contractors primarily through direct conversations and references rather than available customer feedback
- ✓ You prioritize maximum industry tenure over documented customer service patterns
Questions to Ask Before Hiring
- → Ask Sun Marshall for references from recent residential solar projects similar to yours, and follow up with those customers about communication, timeline, and problem resolution
- → Ask Sun Marshall how they handle project communication and what their typical installation timeline looks like for a system your size
- → Ask Gomaxxx about their experience with any specific complications your property might present, such as older electrical panels or unusual roof configurations
- → Ask both contractors about their warranty terms and who handles service calls if issues arise after installation
The Bottom Line
For most homeowners needing to choose this week, Gomaxxx Inc provides the better combination of verified performance and transparent operations. Eight years is sufficient experience for residential solar installations, and the consistent customer feedback about competitive pricing, efficient work, and responsive communication gives you concrete evidence of what to expect. Sun Marshall's 15 years of experience is valuable, but without customer feedback to assess their current service quality, you're evaluating credentials without operational transparency. If your project involves unusual complexity where maximum experience matters, request detailed recent references from Sun Marshall and conduct thorough phone conversations with those customers before deciding. Otherwise, Gomaxxx's documented track record makes it the lower-risk choice.
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Frequently Asked Questions
The additional seven years of experience matters most if your project involves complications like significant electrical upgrades, structural challenges, or complex utility interconnection issues. However, for straightforward residential installations, Gomaxxx's eight years is sufficient experience while providing verified customer service evidence. Request detailed references from Sun Marshall to bridge the feedback gap before deciding.
Gomaxxx has documented customer feedback about significantly lower pricing than competitors, which matters for budget-conscious projects. However, get written quotes from both contractors before deciding based on price alone. Sun Marshall may price competitively as well, but without customer feedback patterns, you'll need to compare actual bids directly.
Eight years represents established experience in solar installation, including navigation of California's solar programs and equipment warranties that extend 25 years. Both contractors carry the same bond and workers comp protection. The greater risk is choosing any contractor without understanding their current service approach, which is why Gomaxxx's transparent customer feedback provides important reassurance.
Gomaxxx operates as an owner-involved business, meaning you'll likely communicate directly with the owner throughout your project rather than through project managers or sales teams. Customers specifically mention this personalized attention and responsive communication as strengths. Ask Sun Marshall about their communication structure to compare approaches.
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See our ranked list of top solar contractors in Solano.
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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 13, 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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