Accessory Structures in Shasta County, CA (2026)

California Government Code section 65852.2(c)(2) and (d) - state ADU law (controls Shasta County ADU permitting)

(c)(2) Notwithstanding paragraph (1), a local agency shall not establish by ordinance any of the following: (A) A minimum square footage requirement for either an attached or detached accessory dwelling unit that prohibits an efficiency unit. (B) A maximum square footage requirement for either an attached or detached accessory dwelling unit that is less than either of the following: (i) 850 squ...

Shasta County Code section 17.88.140 (Residential accessory buildings), subsections A and B

17.88.140: Residential accessory buildings. A. Residential accessory buildings are buildings which are subordinate to and commonly associated with a residence, including, but not limited to: private garages, carports, covered awnings, greenhouses, and private storage buildings. As used in this section, residential accessory buildings include the terms 'residential accessory structure' and 'acce...

California Government Code section 65852.2(a)(1)(D)(iii), (vii), and (xi) - garage and accessory-structure conversion to ADU

(D) Require the accessory dwelling units to comply with all of the following: ... (iii) The accessory dwelling unit is either attached to, or located within, the proposed or existing primary dwelling, including attached garages, storage areas or similar uses, or an accessory structure or detached from the proposed or existing primary dwelling and located on the same lot as the proposed or exist...