Compare Local Pros
All Bay Solar Construction vs Building Efficiency
San Francisco Electrical Contractors Comparison · Updated March 2026
Both are veteran San Francisco contractors with equivalent credentials, but they specialize in completely different work: solar and roofing versus HVAC and energy efficiency.
| All Bay Solar Construction | Building Efficiency | |
|---|---|---|
| Rating | ★ 4.6 | ★ 4.9 |
| Years Licensed | 15 years | 16 years |
| License # | 962034 | 947504 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Francisco, CA | San Francisco, CA |
| Website | www.allbaysolar.com | buildingefficiency.net |
Key Differences
What Customers Say
All Bay Solar Construction
Customers highlight All Bay Solar Construction's ability to coordinate complex solar and roofing projects with clear communication and meticulous attention to protecting homes during installation.
Building Efficiency
Customers emphasize Building Efficiency's technical consultation skills and proper system sizing for challenging HVAC installations in older San Francisco homes.
Key Takeaway: Both companies receive praise for technical expertise and communication, but All Bay's feedback centers on project coordination across multiple trades while Building Efficiency's focuses on equipment sizing consultation and navigating rebate processes.
Customer Reviews
All Bay Solar Construction
I am delighted to write this review for All Bay Solar Construction in recognition of their exceptional work on the Electric Panel replacement . Throughout the duration of this project, All Bay Solar C...
Had a great experience with these guys, hiring a single company to redo my roof and install solar / batteries was a good choice. Very professional crew from the roofers to the electricians, the operat...
We had an excellent experience working with All Bay for our solar installation including reroofing. They were all professionals, responsive and great problem solvers. The project manager was great, as...
Building Efficiency
Incredible team, professional, terrific communication and great clean work. Absolutely recommend.
Building efficiency was very easy to work with thru all phases of my project: from initial consultation, through rebate applications to the actual project itself. Reliable and professional.
The Building Efficiency team was a joy to work with. They made my life easy at every step of the process.
Consider All Bay Solar Construction if...
- ✓ You're planning to install solar panels and need roof work done simultaneously, benefiting from a single contractor coordinating both trades
- ✓ Your project includes solar-related electrical upgrades like panel replacements or battery storage systems
- ✓ You want a contractor experienced in protecting San Francisco homes during multi-day solar and roofing installations
- ✓ You're pursuing a roof replacement and want to evaluate solar installation at the same time
Consider Building Efficiency if...
- ✓ You're replacing a gas furnace or water heater with electric heat pump systems as part of home electrification
- ✓ Your home needs insulation upgrades in walls, attics, or other areas to improve energy efficiency
- ✓ You own an older San Francisco home with spatial constraints requiring custom HVAC solutions
- ✓ You need guidance navigating rebate applications for energy efficiency upgrades and equipment sizing consultation
Questions to Ask Before Hiring
- → If pursuing both solar and HVAC upgrades, ask each company whether they coordinate with other contractors and how that process typically works
- → Ask about their experience with San Francisco permit processes specific to your project type, as solar and HVAC work involve different municipal requirements
- → Inquire about project timelines for your specific work scope, as roofing and solar projects have different dependencies than HVAC installations
The Bottom Line
This comparison only matters if you're uncertain about which type of project you need. All Bay Solar Construction and Building Efficiency are both veteran San Francisco contractors with equivalent credentials and positive customer feedback, but they work in entirely separate domains. Choose All Bay if you're installing solar panels, replacing your roof, or coordinating both. Choose Building Efficiency if you're upgrading HVAC systems, installing heat pumps, adding insulation, or electrifying your home. If you're planning a comprehensive energy upgrade that includes both solar and HVAC improvements, you'll likely need both companies at different phases of your project.
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Frequently Asked Questions
No, these companies operate in different specializations. All Bay Solar Construction focuses exclusively on solar and roofing work, while Building Efficiency specializes in HVAC systems and insulation. If you're pursuing a comprehensive energy upgrade involving both solar panels and heat pump systems, you'll need to hire both contractors or find a different company that handles multiple trades.
Both have extensive San Francisco experience, but it depends on your project. Building Efficiency explicitly works with homes 85 to 100 years old and addresses the spatial constraints common in historic structures for HVAC installations. All Bay Solar Construction works throughout San Francisco on roofing and solar projects, but customer feedback doesn't specifically highlight historic home challenges. Ask about their experience with your home's specific age and construction type.
Building Efficiency receives specific customer feedback about guiding homeowners through rebate applications for energy efficiency upgrades, which is a standard part of their HVAC and electrification service. All Bay Solar Construction works in the solar industry where federal tax credits and local incentives are common, but customer feedback doesn't specifically mention rebate assistance. Ask All Bay directly about their support with solar incentive paperwork.
HVAC installations through Building Efficiency often have shorter durations than combined solar and roofing projects through All Bay, though this varies significantly by scope. A heat pump installation might take days to a week, while a roof tear-off with solar installation typically requires longer timelines due to weather dependencies and electrical inspections. Ask each company for estimated timelines specific to your project scope.
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See our ranked list of top electrical contractors in San Francisco.
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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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