- 650-287-4202
- info@seadesignbuild.com
- 763 Polhemus Road Suite 1, San Mateo
SEA Design & Build is a trusted home addition contractor in South San Francisco, helping homeowners expand their living space with thoughtfully designed and expertly constructed additions. Whether you need extra room for a growing family or want to improve functionality, we deliver home additions that blend seamlessly with your existing structure.
We provide home addition services throughout South San Francisco and nearby communities in San Mateo County, working on single-story additions, second-story additions, room expansions, and custom home extensions. Our design-build process emphasizes careful planning, clear communication, and quality construction to ensure a smooth experience from concept to completion.
Choosing a local design-build firm like SEA Design & Build means working with professionals who understand South San Francisco zoning regulations, building codes, and architectural styles. With over 38 years of experience, we are committed to delivering custom home additions that enhance livability, improve flow, and increase property value — all while maintaining the character of your home.
