5 rules for unincorporated Yuba County, California.
Verified from official government sources
Unincorporated Yuba County permits ADUs ministerially under Development Code 11.32.030, implementing California Gov. Code 65852.2. A detached ADU may reach 850 sq ft (one-bedroom) or 1,200 sq ft (two-plus bedrooms), with 4-foot side and rear setbacks and a 16-foot height limit. The County must issue a building permit within 60 calendar days of a complete application.
In unincorporated Yuba County, sheds are accessory structures under Development Code 11.19.030. One accessory structure less than 8 feet in height and less than 120 square feet in area is exempt from setback requirements; larger sheds must meet the setbacks of the zoning district. Accessory structures count toward maximum lot coverage and floor-area ratio.
Unincorporated Yuba County allows converting an existing garage or accessory structure into an ADU under Development Code 11.32.030. Conversions of existing living area, garages, or accessory structures have no setback requirement, and existing structures taller than the 16-foot limit may still be converted. Such ADUs follow the state-mandated ministerial 60-day approval.
In unincorporated Yuba County a carport is an accessory structure under Development Code 11.19.030 and must meet the setback and height standards of its zoning district. The Division II zoning tables set detached-garage/carport setbacks (about 10 feet in Rural Estate, 5 feet in other residential districts) and accessory-structure height limits. Carports count toward lot coverage.
Yuba County's Development Code has no 'tiny home' provision. Living in a vehicle, tent, or makeshift structure as a residence is unlawful under Section 11.32.070, except an owner may camp on their own land outside the Valley Growth Boundary up to 14 days per 60-day period. A tiny home built on a permanent foundation can instead qualify as an ADU.
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