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Accessory Units and Junior Units

Effective January 24, 2017, Permit Sonoma is processing Accessory Units in accordance with the adopted urgency ordinance. View the updated application submittal requirements. Read more about fire sprinkler requirements.

In September 2016, the Governor signed two bills that change State housing law regulating Accessory Dwelling Units, formerly called second dwelling units. SB 1069 and AB 2299 remove barriers to Accessory Units to encourage creation of more affordable housing statewide. The Governor also signed a bill (AB 2406) establishing regulations to enable local jurisdictions to permit “Junior Accessory Dwelling Units.” Junior Units are very small living units created in an existing bedroom within a single-family dwelling.


Adopted Ordinance (PDF: 170 kB)

Planning Commission Staff Report (PDF: 131 kB)

Board of Supervisors Agenda Packet – 1/24/2017 Meeting (Item 40/Page 354) (PDF: 32 MB)


Document Accessibility Notice
Some of these documents are saved in Portable Document Format (PDF). We recommend you download Adobe® Reader®, a free software that allows you view and print PDF files.

For accessibility assistance with these documents, please contact Permit Sonoma (PRMD), Sonoma County at (707) 565-1900.
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Although every effort is made to provide complete and accurate information on this website, users are advised to contact appropriate PRMD staff before making project decisions. This may involve contacting more than one section within PRMD (e.g. Building, Plan Check, Zoning, Well & Septic, etc.), since each section implements specific codes or ordinances which may affect your project.
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