I’ve covered this home a couple of times in the past and now it is for sale. The price seems very high, but for this area of California it is the norm. You can view the listing at zillow.com and learn more about the builder New Avenue Homes at their website.
Here is the description of this little in-law home: This modular net zero energy home was designed as a model of sustainability. New Avenue Inc.
New Avenue will manage the engineering, permitting and financing of this home for you. The majority of homes in California have the right to put this in their own backyard.