Build Your ADU Faster in the Bay Area
Expert ADU Construction in California — From Permits to Move-In Ready
Trusted ADU Builders Serving the Bay Area
Fast Struct specializes in high-quality ADU construction across San Mateo County, Santa Clara County, Contra Costa County, and San Francisco. With over 14 years of experience building modular and panelized homes in California, we help homeowners add value, space, and flexibility to their property — without the stress of traditional construction.
From design and permitting to fabrication and installation, our team manages every step so you don’t have to.
Trusted ADU Builders Serving the Bay Area
We offer complete, start-to-finish ADU solutions tailored to California regulations and your property.
Custom ADU design & planning
Modular ADU construction
Panelized ADU construction
Detached & attached ADUs
Garage conversion ADUs
Full permitting & zoning approval
Foundation, utilities & site prep
Interior finishes & final inspection
One team. One contract. One streamlined process.
Why Homeowners Choose Fast Struct for ADU Construction
Built Faster
ADUs completed in as little as 3–5 months after permit approval
Permits Handled
We navigate local zoning, codes, and approvals for you
California Expertise
Built specifically for Bay Area regulations
Factory Precision
Higher quality control than traditional builds
End-to-End Service
Design, build, and handover handled by one team
Transparent Pricing
Clear scope, no hidden surprises
Licensed & Experienced ADU Builders
CSLB Licensed Contractor #1147858
CA HCD Certification #1632336
14+ years building prefab, modular & panelized homes
Serving homeowners throughout the Bay Area
“Our ADU was completed months earlier than expected. The process was smooth, and the quality exceeded expectations.”
— Bay Area Homeowner
Add Space, Income & Value to Your Property
Create rental income opportunities
Add living space for family or guests
Increase long-term property value
Faster build than traditional construction
Minimal disruption to your home
Fast Struct makes ADU construction simpler, faster, and more predictable.
Get a Free ADU Consultation Today!
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Ready to Build Your ADU?
Talk to an experienced ADU builder today and find out what’s possible on your property.
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