Accessory dwelling unit (ADU/JADU) zoning update
Summary
New rules align the county's accessory dwelling unit regulations with state law — ADUs were 35% of county building permits last year and are a key piece of the county's affordable housing capacity.
At a glance
- Total mentions
- 2
- Last 30 days
- 0
Last discussed Aug 25, 2026.
Impact analysis
No impact fees on ADUs under 750 square feet, per state law.
Homeowners adding rental or family units, and lower-income renters seeking affordable options.
Mentions & discussions (2)
Board of Supervisors - Aug 25, 2026
New rules align the county's accessory dwelling unit regulations with state law — ADUs were 35% of county building permits last year and are a key piece of the county's affordable housing capacity.
Planning Commission — May 7, 2026
The county is updating its ADU and junior ADU rules to match state law, which limits local restrictions on backyard cottages and in-home units. This could make it easier for homeowners to add small rental units on their property.
Related development
Zone Text Amendment ZT-26-02 (ADU/JADU regulations)
Clarifies where and how ADUs can be built, keeping the local allowance for larger 1,500-square-foot ADUs in rural residential districts, and bans short-term rental use.
Zone Text Amendment ZT-26-04 (Housing Element consistency)
Makes it easier to build affordable and worker housing by right in more districts, with density bonus affordability locked in by deed restrictions.
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