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Star Waterproofing and Roofing vs Eco Performance Builders
Contra Costa General Contractors Comparison · Updated March 2026
These are fundamentally different contractors: Star specializes in roofing and waterproofing while Eco Performance focuses exclusively on energy efficiency and HVAC systems.
| Star Waterproofing and Roofing | Eco Performance Builders | |
|---|---|---|
| Rating | ★ 4.3 | ★ 5.0 |
| Years Licensed | 8 years | 16 years |
| License # | 1036279 | 944856 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Walnut Creek, CA | Walnut Creek, CA |
| Website | www.starwaterproofingco.com | ecoperformancebuilders.com |
Key Differences
What Customers Say
Star Waterproofing and Roofing
Customers consistently praise Star's ability to diagnose difficult leak sources and provide detailed project scopes, with particular appreciation for their expertise in deck and balcony waterproofing.
Eco Performance Builders
Customers highlight Eco Performance's thorough energy assessments and technical knowledge, valuing their patient explanations and comprehensive approach to improving home comfort and efficiency.
Key Takeaway: Star's reviews focus on solving specific water intrusion problems with diagnostic skill, while Eco Performance's feedback emphasizes educational guidance through complex energy upgrade decisions.
Customer Reviews
Star Waterproofing and Roofing
Gilber, Linda and the crew are top notch professionals. They waterproofed an outside deck at our building in San Francisco and did an A+ job. They were on time and very responsive to my needs and the ...
I recently hired Star Waterproofing to waterproof my 3 outdoor decks in S.F., they were leaking everywhere . With the amount of rain we have been receiving these past few years , I needed a specialis...
I recently hired Star to replace the flat commercial roof for an apartment building in Oakland (6,500 sq ft). I had an excellent experience from start to finish, and I'm glad to leave a glowing recomm...
Eco Performance Builders
We needed a new heater and went for a heat pump. Their approach is top shelf: our uninsulated house was insulated, new ductwork installed, recommended window replacement to allow for smaller system. ...
I had Eco Performance Builders install two heat pump HVAC systems with new ducts, new attic insulation, and an ERV system for my house. From start to finish, they were very prompt, knowledgeable and ...
Great service from project planning, design,. permitting and delivery. Highly detail oriented crew that gets the job done well and on time.
Consider Star Waterproofing and Roofing if...
- ✓ You have a roofing problem: active leaks, failing flat or low-slope roof systems, or deteriorating tar and gravel or torch-down roofing that needs replacement
- ✓ Your deck, balcony, or exterior waterproofing is failing and you need someone experienced in diagnosing where water is actually entering the building envelope
- ✓ You manage multi-unit properties with ongoing exterior maintenance needs and want a contractor familiar with coordinating related work like painting
- ✓ You need detailed diagnostic work before committing to a scope, particularly for persistent leak issues where the source isn't obvious
Consider Eco Performance Builders if...
- ✓ Your home has comfort problems, high energy bills, or you're replacing an aging HVAC system and want a comprehensive assessment of insulation, ductwork, and equipment sizing
- ✓ You're considering heat pump technology for heating, cooling, or water heating and want technical guidance on appropriate system selection and integration
- ✓ You need whole-home energy efficiency improvements that address multiple systems together rather than piecemeal equipment replacement
- ✓ You value a systems-based diagnostic approach that identifies underlying causes of efficiency and comfort issues before proposing solutions
Questions to Ask Before Hiring
- → If you have both roofing concerns and energy efficiency goals, ask each contractor directly whether they can address both needs or if you'll need separate specialists
- → For Star: Given some reports of missed follow-up, ask about their process for warranty service and post-completion support
- → For Eco Performance: If your project involves any building envelope repair before insulation work, ask whether they handle that scope or coordinate with other trades
The Bottom Line
This comparison only makes sense if you're uncertain whether your problem is roofing-related or energy-related. If you have leaks, failing waterproofing, or roof deterioration, hire Star Waterproofing and Roofing for their diagnostic expertise and exterior envelope experience. If you're addressing comfort issues, high energy costs, or aging HVAC equipment, hire Eco Performance Builders for their systems-based approach and heat pump expertise. These contractors don't compete for the same projects. Identify your primary need first, then contact the specialist who actually works in that trade.
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Frequently Asked Questions
These contractors operate in different specialties and would not typically bid the same scope. Star would handle roofing and waterproofing while Eco Performance would manage HVAC and insulation. If you need both, you'll likely hire them for separate scopes or choose a general contractor who coordinates multiple trades.
Not significantly for this comparison. Eco Performance's 16 years reflects deeper experience in energy efficiency and HVAC work, while Star's 8 years is substantial for roofing and waterproofing expertise. Both have sufficient tenure to handle complex projects in their respective specialties.
Call Star first to diagnose and repair the water intrusion, then contact Eco Performance for insulation improvements. Installing insulation over an active leak will cause mold and material failure. The roofing problem must be resolved before addressing energy efficiency.
Both carry proper workers compensation insurance and equal bond amounts, and both maintain active licenses. Star has occasional reports of missed follow-up for service calls, while Eco Performance has no noted concerns. Neither presents credential red flags for a homeowner.
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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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