California ADU Specialists
Put an ADU first - more space, more value, more options.
Detached, prefab, or garage conversion - ADU First connects you with a vetted network of local pros who design, permit, and build accessory dwelling units the modern way.
What We Do
Everything your ADU needs, one network
From the first feasibility sketch to the last finish detail, our network covers the full accessory-dwelling-unit journey.
Detached ADUs
Standalone backyard homes built from the ground up - private, self-contained, and designed to match your property.
Learn morePrefab & Modular ADUs
Factory-built units that arrive largely complete - a faster, more predictable path to a finished ADU.
Learn moreGarage & Carport Conversions
Turn an underused garage or carport into a bright, code-compliant living space without expanding your footprint.
Learn moreADU Design & Planning
Feasibility, layouts, and design that make the most of your lot before a single permit is pulled.
Learn morePermitting & Approvals
Navigate local codes, setbacks, and approvals with pros who handle ADU submittals every day.
Learn moreADU Interior Finishing
Kitchens, baths, flooring, and finishes that turn a shell into a warm, move-in-ready home.
Learn moreBefore & After
From empty side yard to finished ADU
A sleek prefab unit dropped into unused backyard space - private, self-contained, and built to add real value.
Prefab Backyard ADU
An unused side yard transformed into a contemporary prefab studio with its own entrance, kitchen, and bath - delivered and set with minimal disruption to the main home.
How It Works
A clear path from idea to move-in
Share your project
Tell us about your lot, your goals, and your timeline in a quick message - no forms, no pressure.
Get matched
We connect you with vetted ADU pros in your area who fit your project type and budget.
Plan & permit
Your pro helps refine the design, confirm feasibility, and move the approval through your local process.
Build & finish
From foundation to final finish, your ADU comes together - ready for rental, family, or work.
Where We've Been Working
ADU projects across California
From Bay Area infill lots to Southern California backyards, our network covers the metros where ADUs are in highest demand. Wherever you are in the state, we can match your project to pros who know the local codes and lot conditions.
Based in California - proudly serving homeowners nationwide through our partner network.
Ready to put an ADU first?
Tell us about your lot, your goals, and your timeline. We’ll connect you with vetted ADU pros in your area for a free, no-obligation quote.