- 650-287-4202
- info@seadesignbuild.com
- 763 Polhemus Road Suite 1, San Mateo
At Sea Design Build, we specialize in custom ADU design and construction across the Bay Area. From concept to completion, we handle every step with precision, transparency, and local expertise.
Whether you’re building an ADU for rental income, family living, or property value growth, we deliver high-quality, code-compliant ADUs designed for your lifestyle and your lot.
✓ Fast,Reliable ✓ Eco-friendly ✓ Fully Licensed Bonded And Insured
We offer end-to-end ADU solutions, so you don’t need to coordinate multiple vendors.
Every ADU we build starts with a thoughtful, custom design tailored to your property and goals.
➤ Detached ADUs
➤ Attached ADUs
➤ Garage Conversions
➤ Junior ADUs (JADUs)
➤ Space-efficient layouts
➤ Code-compliant designs
Our designs focus on functionality, natural light, privacy, and resale value.
Navigating permits in the Bay Area can be complex. We simplify the process by handling everything for you.
We manage:
➤ Site evaluation & feasibility analysis
➤ Zoning and setback compliance
➤ Architectural & structural plans
➤ City submissions and revisions
➤ Final permit approvals
This helps prevent delays, rejections, and costly revisions.
Once permits are approved, our experienced builders bring your ADU to life with precision and care.
Our construction services include:
➤ Site preparation & utilities
➤ Foundation & framing
➤ Roofing, siding & windows
➤ Electrical, plumbing & HVAC
➤ Interior finishes & final inspections
You’ll have a single point of contact and regular project updates throughout construction.
We focus on quality, transparency, and long-term value.
✧ Local Bay Area ADU expertise
✧ Licensed, insured, and experienced professionals
✧ Clear timelines and upfront pricing
✧ High-quality materials and craftsmanship
✧ Full-service design-build approach
Our goal is to deliver a stress-free ADU building experience with results you can trust.
At SEA Design Build, our ADU design-build process is organized, collaborative, and focused on your property and goals. Every Accessory Dwelling Unit is carefully planned to maximize space, comfort, and long-term value while meeting all local and California ADU requirements. With a dedicated project manager guiding each phase, we handle design, permits, and construction under one roof, ensuring a smooth, efficient process and consistent quality from start to finish.
Every project begins with a friendly phone consultation. We’ll discuss your goals, budget, and timeline to determine how our design-build approach can bring your vision to life. This first step helps us understand your needs and answer initial questions about the remodeling process.
Next, we visit your home to evaluate the space in person. This allows us to learn more about your style, and explore potential solutions. Our team listens carefully to ensure your remodel fits your lifestyle and enhances your home’s value.
We create a clear concept and assess the feasibility of your project. From layouts to structural requirements, we provide practical solutions that align with your budget and goals. This stage sets the foundation for a stress-free remodeling journey.
Our designers collaborate with you to bring your ideas to life. Together, we choose finishes, fixtures, and materials that match your taste and budget. With expert guidance, you’ll see your remodel take shape with a personalised design plan.
We handle all the details, including architectural plans, engineering, and city permitting. By managing these steps for you, we ensure your project complies with local codes and is ready for smooth construction.
With everything approved, our skilled team begins construction. Your dedicated project manager keeps the remodel on track and communicates with you at every stage. The result is a beautifully finished space, delivered on time and to the highest standards.
Turning your vision into a home you love starts with clear answers and careful planning. At SEA Design Build, we know that beginning a remodel or new construction project comes with plenty of questions. Our FAQ section was created to guide you through the process—covering everything from design and budgeting to timelines and permits—so you can move forward with confidence and bring your Bay Area home project to life.
We provide full-service ADU design, permitting, and construction for homeowners across the Bay Area, delivering custom, code-compliant units built for comfort, value, and long-term use.
Primary service locations include:
Complete the form, or call us to
set up an in-home consultation.
763 Polhemus Road Suite 1
San Mateo CA 94402
