San Francisco ADU Contractors

Building and Designing Custom ADUs in San Francisco for Over 38+ Years

Free in Bathroom estimate

Trusted by customers all around the bay area

Serving San Francisco and Nearby Areas

SEA Design Build provides custom ADU design and construction services throughout San Francisco and nearby Bay Area communities. From planning and design to permitting coordination and construction, we help homeowners create functional, well-designed ADUs built around their property and long-term goals.

Our team works with San Francisco homeowners across residential neighborhoods, coastal areas, and hillside properties, delivering a streamlined ADU design-build experience built around clear communication, thoughtful planning, and quality craftsmanship.

Custom ADUs Built for San Francisco Homes

Your San Francisco ADU Starts Here

For homeowners in San Francisco, choosing a design-build firm like SEA Design & Build means working with a team that understands local building codes, architectural styles, and quality standards. We take pride in delivering results that are both visually stunning and structurally sound, backed by years of experience and satisfied customers.