About CSN Builders, Inc.

CSN Builders, Inc. is a licensed California general contractor providing residential and commercial construction services across the North Bay Area, including Sonoma, Napa, Marin, Solano, Mendocino, and El Dorado Counties. From kitchens and bathrooms to full remodeling projects, our goal is simple: deliver clean craftsmanship, clear communication, and a job site you can feel good about.

We handle projects through a streamlined design-build process, coordinating planning and construction so timelines and expectations stay organized from day one. Whether you’re adding an ADU, expanding your home, or building from the ground up with framing and foundations, you can count on professional oversight and detail-driven work from start to finish. Lic. #1138937.

Why Choose CSN Builders, Inc.?

Choosing CSN Builders, Inc. means working with a contractor that stays responsive, organized, and focused on quality at every phase of the build. We take pride in straightforward planning, consistent on-site oversight, and craftsmanship that holds up — whether we’re remodeling a single space or managing a larger addition.

No matter the scope of your project, you can expect:

• Clear communication and a process that keeps decisions organized
• Detail-driven workmanship for kitchens, baths, additions, and ADUs
• Reliable structural capability with framing and foundation expertise