On June 18, the San Jose City Council voted unanimously to approve several zoning code amendments that are intended to make it easier for people to build ADUs on their property in that municipality. Effective July 27, these changes will include:
- Increasing the maximum size of allowable ADUs from 800 square feet to 900 square feet
- Allowing two-story ADUs (either stand-alone or atop a garage or accessory structure)
- Allowing ADUs to be built on lots zoned for high-density residential development
- Allowing ADUs that are at least 800 square feet in size to have two bedrooms
- Reducing the minimum lot size required to be allowed to build an ADU from 5,444 square feet to 3,000 square feet
According to the Housing Trust of Silicon Valley, these new rules will significantly expand the potential for construction of ADUs. Currently, there are 103,000 lots in San Jose where ADUs are allowed; when these new changes take effect, there will be an additional 18,000 lots on which ADUs may be built in the city (http://homebrik.com/what-are-adus/).