HCD Outlines PRECISELY What Can be Built!
- Meredith Munger
- 1 hour ago
- 1 min read

Just a few weeks ago, the California Department of Housing and Community Development stepped into hit's role as gorilla enforcer of ADU laws. In the case, it issued a letter to the County of San Diego voiding it's ADUs and proving solid clarity for all municipalities.
In all fairness, the County of San Diego is easy to work with and it's good-natured staff are very helpful. What matters here are the specifics of what you CAN build:
TWO detached ADUs are allowed to be built on a single-family lot.
One JADU may be build regardless of occupancy. Moreover, the JADU may be State ADU Law2 defines size maximums in terms of “square feet of interior livable space instead of the primary home. This, too, must be ministerially approved.
A municipality cannot require ANY parking for JADU occupants, even if a garage or parking structure is demolished in the process.
State ADU Law defines size maximums in terms of “square feet of interior livable space" - not ALL square feet. This allows for larger interiors.
If you're facing these same challenges in your municipality, you can download a copy of this letter and show them what's law. Special shout out to Whitney Hill of SnapADU whose diligence made this clarity happen!


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