Business Details
47 Years
experience
Your Trusted Commercial Construction Partner in the Bay Area
Duplan Construction has established itself as a premier commercial construction firm serving the San Francisco Bay Area since 1979. With over four decades of experience, we specialize in delivering tailored construction solutions that transform client visions into reality. Our comprehensive services span pre-construction planning, project management, and specialized industrial plumbing, supported by a team of seasoned professionals committed to excellence. As a licensed general contractor with C-36 plumbing expertise, we maintain direct oversight of critical project elements, ensuring quality and compliance with evolving industry standards.Our A+ Better Business Bureau rating since 1991 reflects our unwavering commitment to client satisfaction, while our deep understanding of local regulations and sustainable practices positions us as a trusted partner for complex commercial projects. From medical facilities to high-tech cleanrooms, our portfolio demonstrates technical proficiency in diverse sectors, including office renovations, retail spaces, and industrial buildouts. Through strategic partnerships with top-tier architects and engineers, we deliver projects that meet exacting specifications while prioritizing safety, efficiency, and environmental responsibility.
Services
Commercial Construction
Industrial Plumbing
Office Renovations
Cleanroom Building
Pre-Construction Planning
Details
- Year established: 1979
Highlights and features
- 40+ years of commercial construction experience in the Bay Area
- In-house C-36 licensed plumbing team for direct project oversight
- Maintained A+ Better Business Bureau rating since 1991
- Specialized expertise in cleanrooms, medical facilities, and tech centers
- Comprehensive pre-construction planning with feasibility assessments
Associations and certifications
- Better Business Bureau
Services
Commercial Construction
Duplan Construction delivers comprehensive commercial construction services for office spaces, retail locations, and industrial facilities. Our team manages projects from initial planning to final occupancy, ensuring compliance with all regulatory requirements while maintaining strict quality control standards. We specialize in transforming commercial spaces to meet modern business needs while prioritizing functionality and aesthetic appeal.
Industrial Plumbing
Our C-36 licensed plumbing division provides specialized industrial plumbing services for commercial buildings. This includes boiler installation, process piping systems, and HVAC wet-side plumbing. With in-house expertise and direct project oversight, we ensure reliable, code-compliant plumbing systems that support the operational needs of businesses in the San Francisco Bay Area.
Pre-Construction Services
Duplan's pre-construction services establish the foundation for successful projects through feasibility assessments, budgeting strategies, and design coordination. Our team works closely with architects and engineers to identify potential challenges early, ensuring projects remain on schedule and within budget while meeting all technical and regulatory requirements.
Cleanroom Construction
We specialize in constructing high-tech cleanrooms for electronic contract manufacturing and life sciences applications. Our expertise includes controlled environment systems, specialized HVAC requirements, and contamination prevention measures. These facilities meet stringent industry standards for semiconductor manufacturing, pharmaceutical research, and other precision technology applications.
Corporate Office Improvements
Our corporate office improvement services focus on creating functional, modern workspaces that enhance productivity and employee satisfaction. We handle tenant improvements, space reconfigurations, and technology integration while maintaining minimal disruption to business operations during construction phases.
People
Paul McKennon
Owner
With over 40 years in construction, Paul McKennon has led Duplan Construction since 2021. He developed the company's plumbing division in 1994 and became full owner in 2021, bringing extensive industry expertise and a commitment to exceptional client service.
Javier Garcia
Field Superintendent
Javier Garcia oversees field operations with 25+ years of plumbing expertise. He manages construction teams and subcontractors, ensuring quality workmanship and compliance with project specifications while maintaining safe working environments for all personnel.
Beverly Casas
Project Manager
Beverly Casas has managed Duplan's finance department since 1999. She identifies operational efficiencies, supervises teams, and ensures daily operations align with strategic goals while maintaining financial accountability across all projects.
Dave Powell
Business Development & Project Manager
Dave Powell brings 25+ years of hospitality industry experience to Duplan. He excels at translating concepts into designs, managing complex projects, and ensuring client satisfaction through effective communication and collaboration with all stakeholders.
Questions
What commercial construction services do you offer?
We provide office renovations, industrial plumbing, cleanroom construction, retail buildouts, and pre-construction planning services for commercial clients in the San Francisco Bay Area.
How long have you served the Bay Area?
Duplan Construction has provided commercial construction services in Northern California since 1979, maintaining an A+ Better Business Bureau rating since 1991.
Do you handle specialized construction projects?
Yes, we specialize in cleanrooms for electronic manufacturing, medical facilities, and high-tech environments requiring controlled systems and specialized HVAC requirements.
Are you licensed for plumbing work?
We hold a C-36 plumbing license with an in-house team that manages all plumbing aspects including boiler installations and HVAC wet-side systems.
What areas do you serve?
We serve Santa Clara, San Mateo, Alameda, Contra Costa, Napa, Sonoma, Marin, and Santa Cruz counties including Silicon Valley and the greater Bay Area.
