All Accessory Dwelling Units (ADUs) require a Design Review Exemption (DRX) Permit from the Planning/Zoning Bureau, along with Building Permits.
Here are the categories of Multi-Family ADUs* under California state law:
- CATEGORY ONE ADU: Conversion of existing non-habitable space located within portions of an existing Two-Family or Multi-Family Dwelling, such as storage rooms, boiler rooms, passageways, attics, basements or garages
- CATEGORY TWO ADU: Construction of new detached structure(s) or conversion of existing detached structure(s) on lots with an existing Two-Family or Multi-Family Dwelling
* Change of Occupancy regulations for the California Existing Building Code (CEBC) may apply when adding ADUs.
See below for step-by-step requirements to apply for your ADU permits.