Our ADU Services in Foster City
New ADU Construction
Ground-up detached ADUs — full-service design, permitting, and construction on your San Mateo lot.
Garage Conversion
Turn an underused garage into a fully permitted, code-compliant living unit.
Detached Backyard ADU
Private backyard cottages that add space, privacy, and value to your home.
Prefab & Modular ADU
Factory-built modular ADUs installed fast, with less on-site disruption.
ADU Design & Permitting
Complete design and permit management — plans, plan check, and approvals.
Junior ADU (JADU)
Convert a bedroom into a compact 500 sq ft junior ADU within your home.
Home Additions
Room additions and second-story expansions that grow your existing home.
Neighborhoods We Serve in Foster City
Why Choose Us in Foster City
Local San Mateo County Team
We build ADUs across Foster City and know the local lot sizes, setbacks, and permitting process. Every project is designed for your specific property and jurisdiction.
Design-Permit-Build
From feasibility and design through permits and construction, we handle your Foster City ADU end to end — one licensed contractor, start to finish.
Satisfaction Guaranteed
If you are not happy with our work, we will come back and make it right at no additional charge. Your satisfaction is our priority.