Business Details
27 Years
experience
Your Trusted Construction Partner in San Rafael, CA
Gannon Construction Company is a family-owned, full-service general contracting firm with over 25 years of experience serving the Greater North Bay Area. Founded in 1999 by Brian Gannon, our company specializes in high-end residential, commercial, and site work projects, combining advanced technology with decades of industry expertise. We hold both Class A and B contractor licenses, enabling us to manage complex projects from raw land development to intricate renovations.Our commitment to honesty, quality, and customer focus has earned us long-term relationships with clients across Marin, Sonoma, Napa, and San Francisco counties. Utilizing cloud-based project management tools, we deliver efficient, transparent solutions while maintaining the craftsmanship and accountability that define our reputation. Our team's deep local knowledge and problem-solving approach ensure every project meets the highest standards of excellence.
Services
Residential Construction
Custom Homes
Remodels
Additions
ADUs
Commercial Projects
Site Work
Retaining Walls
Drainage Systems
Septic Installation
Details
- Year established: 1999
Highlights and features
- We have over 25 years of experience in residential and commercial construction.
- Our dual Class A & B licenses enable comprehensive project capabilities.
- We utilize cloud-based project management software for real-time transparency.
- Our team includes third-generation construction professionals with local expertise.
- We maintain long-term client relationships through honest, problem-solving approaches.
What people say
First class work
Excellent problem solver
Attention to detail
Seamless collaboration
Exceeded expectations
Services
Residential Construction
We specialize in constructing high-end custom homes and complete residential builds. Our process integrates precision craftsmanship with modern technology to deliver tailored living spaces. Clients benefit from our extensive experience managing projects from ground-breaking to final inspections, ensuring code compliance and lasting quality.
Commercial Projects
Our commercial construction services cover restaurants, schools, offices, and public buildings. We prioritize efficient project delivery while maintaining strict code compliance. Our team applies residential craftsmanship standards to commercial environments, ensuring functional, aesthetically pleasing spaces that meet business needs.
Site Work
We handle complex site preparation including grading, drainage, and utility infrastructure. Our Class A engineering license allows tackling challenging terrain and systems. Services include retaining walls, driveway installation, and slope stabilization, providing solid foundations for residential or commercial projects.
Remodels
We execute kitchen, bathroom, and whole-house renovations with minimal disruption. Our approach combines functional improvements with aesthetic enhancements. Detailed planning ensures projects stay within budget while modernizing spaces to meet contemporary living standards and property value goals.
ADUs
We design and build accessory dwelling units that maximize property potential. Our solutions integrate seamlessly with existing structures while meeting local regulations. These flexible living spaces provide rental income opportunities or housing for family members through efficient, code-compliant construction.
People
Brian Gannon
Founder and Project Manager
With 25+ years in construction management, Brian founded Gannon Construction Company in 1999 after leading major Bay Area projects. He oversees all operations, applying expertise in contract management, scheduling, and quality control to ensure client satisfaction.
Gretchen Stagg
Office Manager
Gretchen brings 30 years of bookkeeping experience to manage GCC's financial operations. Her background in tax preparation and service on the Tamalpais Community Services District board enhances her organizational and fiscal management contributions to the team.
Collin Martin
Project Manager
Collin combines academic training in Construction Management with hands-on experience gained from childhood job site exposure. He manages projects using modern techniques learned through internships and formal education at Cal Poly San Luis Obispo.
Questions
What areas do you serve?
We primarily serve Marin, Sonoma, Napa, and San Francisco counties in Northern California.
Are you licensed for both residential and commercial work?
Yes, we hold both Class A (General Engineering) and Class B (General Building) contractor licenses.
How do you handle complex construction challenges?
Our team applies 25+ years of experience and advanced project management tools to anticipate and resolve issues proactively.
What project sizes do you handle?
We work on projects ranging from small renovations to multi-million dollar developments, tailoring our approach to each client's needs.
Can you manage multi-phase construction projects?
Yes, our cloud-based project management system enables efficient coordination of complex, multi-phase developments.
