House exterior at sunset

Premier San Francisco Bay Area Design & Build Firm

Specializing in Additions, Full Home Renovations, Kitchens, and Bathrooms 

SEA is a premier Design/Build firm located in San Mateo. Over the last 3 decades, we’ve designed and constructed over 3,500 homes in the San Francisco Bay Area. We specialize in additions, full-home renovations, and any portion thereof, particularly baths and kitchensSince our inception in 1989, we’ve become a leader in design, remodeling, and additions in San Francisco and on the Peninsula. 


What Sets Us Apart?

  • We are creating your unique home—not just remodeling a house—so we listen, then design and build your home with all your wants and needs. 

  • We're one of the most respected Design/Build contractors in the SF Bay Area, with stellar reviews and design awards.

  • We specialize in exquisite design and the highest quality construction.

  • We stand by our work, even years after your job is complete.

  • We keep our clients completely informed 24 / 7 using our online management system. It includes all scheduling, budgets, change orders, and weekly progress photos and reports.


Don’t believe us . . . past and repeat clients tell our story best. If you’re just beginning to consider a remodel, addition, or have a project you've been planning, please contact us so we may see if we can be of service.


We have used SEA for five major projects over the last 12 years. The initial big surprise was that they managed our costs incredibly well! 

We trust them enough that since we began our relationship with SEA Construction, we have not interviewed another contractor.

— M.B., Hillsborough

SEA Design/Build Projects



As the kitchen is the focal point of most homes, everyone wants a wonderfully comfortable room that does it all. Our kitchen designs encompass all styles and tastes: contemporary, transitional, and traditional. Let our three decades of experience guide you to the kitchen you've always dreamed of for cooking, eating, and entertaining family and friends.

Kitchen remodel design build

Full-Home Renovations

Repurpose, relocate, refinish and vastly improve the enjoyment of existing spaces—the simplest and most cost-effective way to achieve most goals.


Need more space? Proper design and execution can allow you to stay in your home, neighborhood, and school district at costs far below what relocation would require and, in some instances, you may even be able to live in your home during construction.


Everyone wants a bathroom that makes you smile, with the look, storage and amenities you want and need. We have limitless design solutions for large and small spaces.

Bathroom remodel industrial design
Family room remodel redesign

Family Rooms

Whether you use your family room to hang out, entertain guests, read a book, catch up on work, or all the above, our custom design approach ensures the best solution to match your needs.

Remodeler Top 500 logo
Big 50 Remodelers logo
NARI logo
US Green Building Council logo
NKBA logo
Best of houzz log
Guild Quality 550 Excellence logo
BBB A+ logo
Lead-Safe Certified Firm logo
Guildmaster Servce Excellence log
Contractor of the Year Award logo
Rebuild Together Peninsula logo
BPI Certified Professional logo
Featured on houzz logo
Remodeling for Excellence Award logo

Awards and Professional Affiliations