Accessory Structures in Vallejo, CA (2026)
5 verified accessory structures rules for Vallejo, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Vallejo regulates ADUs and JADUs under Vallejo Municipal Code Chapter 16.303 (Accessory Dwelling Units). Detached ADUs are capped at 1,200 sq ft, attached ADUs at 1,200 sq ft or 50% of the primary dwelling (whichever is less), and JADUs at 500 sq ft within the existing single-family structure.
Vallejo ADU Permit Requirements
Few RestrictionsShed Rules
Vallejo allows small sheds without permits (typically under 120 sq ft). Larger structures require building permits and must meet setback requirements.
Vallejo Shed & Outbuilding Rules
Few RestrictionsGarage Conversions
Vallejo allows conversion of an existing garage to an ADU or JADU under VMC Chapter 16.303 and California Government Code §65852.2. Replacement parking is not required when a garage, carport, or covered parking structure is physically replaced by an ADU.
Vallejo Garage Conversion to ADU Rules
Few RestrictionsCarport Rules
Vallejo requires permits for carport construction. Setback requirements, height limits, and lot coverage maximums apply.
Vallejo Carport Construction Rules
Some RestrictionsTiny Homes
Vallejo regulates tiny homes differently based on whether they are on a permanent foundation or on wheels. Zoning and minimum square footage requirements apply.
Vallejo Tiny Home & Small Dwelling Rules
Some RestrictionsLooking for Solano County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Vallejo city rules.
Accessory Structures in Solano County →