WHAT WE STAND FOR
PREVIOUS PROJECTS
We take pride in the quality, efficiancy and the satisfaction we give our clients.
CLIENT
TESTIMONIALS
We are so proud of the work that we do for our customers. Please take a moment and see what they have to say about their experience working with California Modulars.
WHY WAIT
GET STARTED TODAY!
INTRODUCING
CALIFORNIA MODULARS ADUS
Even with a small lot no bigger than 324 square feet of space, California Modulars can build an ADU on your lot! Using less of your budget and rapid off-site construction methods, we are proud to claim the we have one of the smartest solutions on the market. Built with no compromises in quality, in structural sense our ADUs are likely stronger than your existing permanent structure. We can assure you that once put on a permanent foundation, our ADUs will stand the test of time.

Affordability

Quality

Experience

One Stop Shop

Fast

Reliable

ABOUT US
WELCOME TO CALIFORNIA MODULARS – BACKYARD ADU'S
If you’re shopping for a new accessory dwelling unit or a secondary home, you’ve come to the right place! California Modulars is a leading Northern California ADU home builder. We’ve been perfecting the art of building quality, affordable, and customizable modular homes in california.
As a locally owned and operated company based in San Jose, California, we have always aimed to provide our customers with personalized service, plentiful options, and a superior level of quality.
Why wait?
ADU Price Estimator
Use our price calculator to get an instant quote on the cost of your new home!
The price builder gives you an estimation depending on the information you provide it. Don’t consider this price to be a quote but just an estimation depending on your property type and the finish materials that you have chosen for your ADU model. But, it is important to understand what these costs include and what they exclude.
Included Costs:
- Design & Architecture Fees
- Structural, MEP & Title 24 Engineering
- Permit Processing
- Mobilization & Construction
- Project Management of all of the items above. You only deal with California Modulars local area representative.
Excluded Costs:
- Financing
- Permit and other City fees (San Jose/Santa Clara estimate coming soon)
- Soils Engineering (typically not required)
- Landscaping Design or Install (typically not required
- Fire sprinklers
- Survey
- Insurance



BLOG
Everything about developing Accessory Dwelling Units in Oakland, CA
Why build an ADU or a Granny Flat in Oakland?
What is an ADU?
