Accessory Structures in Bostonia, CA (2026)
1 verified accessory structures rules for Bostonia, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Bostonia is unincorporated San Diego County, so accessory dwelling units follow the County Zoning Ordinance (Sec. 6156.x) as constrained by California ADU law. The County no longer requires owner-occupancy; a detached ADU up to 1,200 sq ft is allowed by ministerial permit with 4-foot side/rear setbacks.
ADU Rules in Bostonia (Unincorporated San Diego County)
Few RestrictionsCA Gov. Code Sec. 66314
Local agencies are prohibited from requiring... front setbacks, and minimum lot size... that does not permit at least an 800 square foot accessory dwelling unit with four-foot side and rear yard setbacks to be constructed.
Looking for San Diego County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Bostonia city rules.
Accessory Structures in San Diego County →