Public Records Check
- License Found We found a license number on file for Guyou Roofing & Solar: 997054, but haven't confirmed its current status directly with the California state licensing board. We recommend verifying it's active and in good standing with the California state licensing board before hiring.
- Registered Corporation The California Secretary of State listed Guyou Roofing & Solar as Active when we last checked on Jun 19, 2026, registered since 2013. You can confirm it's still current with the California Secretary of State.
- Business Address Guyou Roofing & Solar's listed address at 9880 Indiana Ave Suite 2, El Sobrante, CA 92503 appears to be a business address. This means the company operates from a real, locatable address rather than a mailbox or PO box, which can make it easier to reach them or resolve issues. Many roofers legitimately work from a home address, so this doesn't speak to the quality of their work, license, or insurance.
- 1 Credential As of Jun 15, 2026, Guyou Roofing & Solar holds these manufacturer certifications: Owens Corning Preferred. These show the company met a manufacturer's program requirements and may offer manufacturer-backed warranties, but they aren't independent quality audits. You can confirm current status with the manufacturer.
- Excellent Ratings Across the platforms we identified for Guyou Roofing & Solar (Google, Yelp, the Better Business Bureau), the blended average is 4.8 out of 5, which we label Excellent. This is a plain average of public customer ratings, not a RooferWatch score. A high average reflects past customers' experiences, not a guarantee of yours, so read the underlying reviews and weigh them yourself.
We verified 5/5 public records for Guyou Roofing & Solar. The more of a company's record you can check, the more informed your hiring decision.
Contact Info
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Phone
This phone number belongs to an iPhone, not a landline, so both calling and texting is supported.(866) 464-8968
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Alternate Phone
This is either a business landline or VoIP number (not a mobile number).(866) 464-8969
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Primary Address
9880 Indiana Ave Suite 2, El Sobrante, CA 92503
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Owner Email
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Website
guyouconstruction.com
- Socials
Company Description
Guyou Roofing & Solar holds California State Licenses B (General Contractor), C-10 (Electrical Contractor), C-20 (HVAC Contractor), C-39 (Roofing Contractor), and C-46 (Solar Contractor), with CSLB #997054. Based in Riverside, the company serves residential and commercial properties across Southern California, including Riverside, Los Angeles, Orange, San Bernardino, and San Diego Counties. Services include roof inspection, roof installation, roof replacement, solar installation, solar replacement, solar repair, solar maintenance, solar battery installation, solar energy storage, EV charger installation, and electrical panel upgrades. The company handles design, permitting, and installation for both single-family homes and multi-family or small commercial properties.
Services Offered
- Roof InspectionA professional examination of the roof's condition, identifying damage, wear, leaks, and remaining lifespan to guide maintenance or replacement decisions.
- Roof InstallationSetting up a new roof system on a structure that lacks one, including decking preparation, underlayment, and shingles or other roofing material.
- Roof ReplacementRemoving an old or failing roof system and installing a new one, typically when repairs are no longer cost-effective.
- Solar InstallationInstallation of solar panel systems on roofs to generate electricity and reduce energy costs.
- Solar ReplacementRemoval and installation of new solar panel systems to upgrade aging equipment or increase energy production capacity.
- Residential Solar DesignCustom planning and layout of rooftop or ground-mounted solar systems sized for a home's energy needs and roof configuration.
- Commercial Solar SolutionsLarge-scale solar installations designed for businesses, warehouses, or industrial facilities to reduce operating costs.
- Solar RepairDiagnosis and repair of malfunctioning solar panels, inverters, wiring, and mounting systems to restore energy generation.
- Solar MaintenanceRoutine cleaning, inspections, and upkeep of solar panels and components to ensure optimal performance and longevity.
- Solar Battery InstallationInstallation of battery storage systems that store excess solar energy for use during nighttime or grid outages.
- Solar Energy StorageBattery systems and related equipment that capture and store solar-generated electricity for later use or backup power.
- EV Charger InstallationProfessional installation of electric vehicle charging stations at residential or commercial properties with proper electrical connections.
- Electrical Panel UpgradesReplacement or expansion of main electrical panels to increase capacity, add circuits, or meet updated code requirements.
- Permitting and CoordinationHandling of building permits, inspections, utility interconnection paperwork, and regulatory compliance for solar and electrical work.
Credentials
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Owens Corning Preferred
An Owens Corning Preferred contractor has earned the mid-tier designation in Owens Corning's contractor network by demonstrating installation quality, business stability, and customer satisfaction. This status… Read more
Company Info
- License Number
- 997054
- Issuing Authority
- CA CSLB
- License Type
- C10 - Electrical
- Company Name
- GUYOU CONSTRUCTION INC.
- State Entity ID
- 3606055
- Company Formation Date
- Sep 24, 2013
- Company Age
- 12.8 years old
- Company Formation State
- CA
- Principal Address
- 9880 INDIANA AVE, SUITE 2, RIVERSIDE, CA 92503
- Mailing Address
- 9880 INDIANA AVE, SUITE 2, RIVERSIDE, CA 92503
- Registered Agent
- MARCUS A GAYOU
- Agent Address
- 9880 INDIANA AVE, SUITE 2, RIVERSIDE, CA 92503
- Entity Type
- Corporation
- Address Type
- Commercial
- Multi-State Company
- No
- Website Age
- 12.8 years old
Inspections and Violations
U.S. and California OSHA dataReviews and Reputation
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Avg. Rating
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BBB A+
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Google
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Yelp
Customer reviews of Guyou Construction/Roofing are mixed. Most reviewers praise the company's professionalism, punctuality, and quality workmanship, particularly highlighting team members Ralph and Brandon. Positive reviews commend their thorough inspections, clean job sites, responsiveness to issues, and willingness to address problems without additional charges. However, one detailed negative review raises significant concerns about unmet promises regarding solar panel efficiency and energy bill reduction, roof damage during installation with delayed repairs, broken tiles left behind, monitoring system issues, and poor customer service follow-up. This reviewer also expresses frustration with financing costs and feels misled about guaranteed performance specifications.
Review Signals Over Time
By sheer volume of Google reviews (a measure of how much feedback a firm has gathered) Guyou Roofing & Solar ranks 2nd of the 463 roofers we track across California, ahead of about 100% of them. Over the past year it has pulled in 30 reviews - the most recent last month - for a rate of roughly 11.5 reviews per month, which is faster than approximately 95% of the other California roofers. Its 4.9-star average rating sits right at the California median of 4.9 stars. The owner responds to 97% of reviews, which is above the typical California roofer’s rate of 57%.
Service Areas
- El Sobrante, CA
- Riverside, CA
- Moreno Valley, CA
- Corona, CA
- Palm Springs, CA
- San Bernardino, CA
- Fontana, CA
- Ontario, CA
- Rancho Cucamonga, CA
- Anaheim, CA
- Irvine, CA
- Santa Ana, CA
- Los Angeles, CA
- Long Beach, CA
- Pomona, CA
- Pasadena, CA
- San Diego, CA
- Riverside County, CA
- San Bernardino County, CA
- Orange County, CA
- Los Angeles County, CA
