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California Modulars Sustainable Technology

California Modulars ADU home offers modular construction of the highest quality. We build the home of your choice using the latest building technology, and in a controlled factory environment by specially trained workers protected from untimely weather delays. Not only can you build the home of your dreams, but the factory-built process makes it faster and affordable for you.


Factory built ADUs are more cost efficient to build than site built structures because factory production and standardization of models provides the greatest control over materials and labor. You reap the cost savings of less waste and better labor allocation.


We’re bringing our reputable experience to the ADU market. With over 10+ years of experience building quality structures, you can rely on us to deliver quality, value and all the support you need.

Fast & Convenient

Our factory team will build your ADU in less time than any site-built structure. Our employees are 100% dedicated to your ADU. And removing the building process from your site is more convenience for you—and your neighbors.


Pre fab models follow the same building code standards as conventional site built structures.  The controlled factory environment eliminates material exposure to sun

One Stop Shop

Some disclaimers on this schedule:

  1. This preliminary project schedule does not account for any unforeseen agency processes such as appeals, special permits for off-site construction, or agency processing delays. California Modulars is only able to control portions of this schedule that relate to generating documents for agency review. The portions of the schedule relating to agency processes can and will change without notice.
  2. This preliminary project schedule is based on the Client being available, making quick decisions and chosing one of California Modular's semi-custom models.
  3. This preliminary project schedule is based on the Building Permit being processed over the counter or expedited with the Building Department. California Modulars cannot be responsible for the time it takes to complete the City’s Plan Check process. Expedited Plan Check has additional city fees and timing can not be guaranteed.
  4. Construction timelines are estimates and cannot be guaranteed by California Modulars, LLC.
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California Modulars serves Silicon Valley and the entire Northern California and the surrounding areas of Campbell, Cupertino, Los Altos, Los Gatos, Menlo Park, Palo Alto, San Jose, Santa Clara, Saratoga, Oakland, San Francisco, Sacramento, Daly City, Berkeley, Morgan Hill, Dublin, Union City, Hayward, Milpitas, Fremont, Morgan Hill, Santa Cruz, Redwood City, San Bruno, San Mateo, Santa Rosa, Sonoma  County & surrounding areas of Bay Area, Northern California.