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ROOF EXPRESS vs Building Efficiency
San Francisco General Contractors Comparison · Updated March 2026
These companies serve completely different needs: ROOF EXPRESS handles roofing projects while Building Efficiency specializes in HVAC and energy efficiency work.
| ROOF EXPRESS | Building Efficiency | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.9 |
| Years Licensed | 5 years | 16 years |
| License # | 1072766 | 947504 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Francisco, CA | San Francisco, CA |
| Website | roof-ex.com | buildingefficiency.net |
Key Differences
What Customers Say
ROOF EXPRESS
ROOF EXPRESS customers consistently emphasize quick response times, clear communication about roof conditions and options, and professional crews that maintain clean jobsites.
Building Efficiency
Building Efficiency customers highlight technical expertise in system sizing and design, particularly for complex installations in older San Francisco homes, along with helpful guidance through rebate processes.
Key Takeaway: The review themes reflect entirely different trades: ROOF EXPRESS feedback centers on roofing project execution and communication, while Building Efficiency reviews focus on HVAC system design, energy efficiency consultation, and electrification expertise.
Customer Reviews
ROOF EXPRESS
Prompt and courteous service at a competitive price. Great roof job and clean up. Appreciated having Habibi available throughout the process to answer questions. Provided pictures of competed roof ...
I had an excellent experience with this roofing company from start to finish. Their team was professional, knowledgeable, and very responsive throughout the entire process. They explained everything c...
Mr Habibi was excellent in dealing with customer. He did the the work fast
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 ROOF EXPRESS if...
- ✓ You need roofing work of any kind—replacement, repair, leak diagnosis, flat roof systems, or skylight-related issues
- ✓ You value quick response times for roof inspections and want clear explanations of what's wrong and what your options are
- ✓ Your project requires permitting and documentation support, which ROOF EXPRESS has demonstrated capability providing
- ✓ You're looking for a roofing contractor with a track record of clean jobsites and neighbor-considerate work practices in San Francisco
Consider Building Efficiency if...
- ✓ You need HVAC installation, heat pump systems, or home electrification work rather than roofing services
- ✓ You're upgrading an older San Francisco home (particularly pre-war construction) and need expertise in retrofitting modern systems into challenging spaces
- ✓ You want consultation on equipment sizing, system design, and navigation of rebate applications for energy efficiency projects
- ✓ You're planning comprehensive energy upgrades combining insulation, ductwork, and heating/cooling system replacement
Questions to Ask Before Hiring
- → If you need both roofing and HVAC work, ask each contractor whether they coordinate with other trades and if they can recommend partners for the work outside their specialty
- → Ask Building Efficiency about their experience with roof penetrations for equipment installations and whether they coordinate roofing work when adding systems
- → Ask ROOF EXPRESS if they inspect and accommodate HVAC equipment on roofs or coordinate with HVAC contractors during reroofing projects
The Bottom Line
This is not a competitive comparison—ROOF EXPRESS and Building Efficiency work in different trades. Choose ROOF EXPRESS if you need any roofing work: replacements, repairs, leak diagnosis, or flat roof systems. Their 5 years in business, responsive communication, and roofing-specific expertise make them appropriate for any roof project. Choose Building Efficiency if you need HVAC installation, heat pumps, insulation, or energy efficiency upgrades, where their 16 years of experience with San Francisco's older homes and technical system design capabilities are relevant. If your home needs both roofing and energy efficiency work, you'll hire both contractors, ideally coordinating timing so roofing comes first to avoid penetrating new roofing for mechanical equipment installations.
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Frequently Asked Questions
Not directly—these are separate trades requiring different licenses. If you're planning comprehensive home upgrades involving both a new roof and energy efficiency improvements, you'll need to hire both contractors or ask if either has established partnerships for coordinated work. Some homeowners prefer sequencing these projects with roofing first to avoid penetrating a brand-new roof for HVAC equipment.
The experience difference is relevant within each specialty but doesn't make them comparable. Building Efficiency's 16 years reflects deep expertise in HVAC and energy systems for San Francisco's older housing stock. ROOF EXPRESS's 5 years shows established capability in roofing. Both have sufficient experience for their respective trades.
It depends on project scope and sequencing. If your roof needs replacement or has active leaks, address that with ROOF EXPRESS first since water intrusion undermines everything else. If your roof is sound but you're focused on energy efficiency, comfort, or electrification, Building Efficiency should be your call. For comprehensive renovations, you'll likely need both at different phases.
Only if you've misidentified your primary need or if you're planning phased improvements where both trades are eventually needed. You wouldn't choose between a roofer and an HVAC contractor for a single project type. The decision is about which system requires attention now and whether you're planning coordinated upgrades that involve both the building envelope and mechanical systems.
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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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