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 an unincorporated CDP in San Diego County (adjacent to El Cajon) governed by the San Diego County Zoning Ordinance §6156 (Accessory Dwelling Units and Junior Accessory Dwelling Units), not a city ordinance. The County allows one ADU plus one JADU on single-family lots; non-conforming multifamily complexes may have up to two detached ADUs OR conversion ADUs created within the existing complex.

Bostonia ADU Rules (San Diego County)

Few Restrictions

Full ordinance details →Official source ↗

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 →