Accessory Structures in Vallejo, CA (2026)
6 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 processes ADUs and JADUs ministerially, without a discretionary permit, once a project meets the size, height, and setback standards in Municipal Code Section 16.303.02. Attached units are capped at fifty percent of the primary home's floor area or 1,200 square feet, detached units at 1,200 square feet, and new detached ADUs at sixteen feet or two stories.
Vallejo Accessory Dwelling Unit Standards
Some RestrictionsVallejo, CA, Municipal Code Sec. 16.303.02(E)-(G)
E.Unit Size. The floor area of an ADU within the living area or structure of the primary unit or attached to the primary residential dwelling unit shall not exceed fifty percent of the total floor area of the primary residential unit or one thousand two hundred square feet. The floor area of a detached ADU shall not exceed one thousand two hundred square feet. ... F.Height. A new detached ADU m...
ADU Owner Occupancy
A Vallejo junior accessory dwelling unit (JADU) requires that either the JADU or the primary residence stay owner-occupied, per Municipal Code Section 16.303.03(G). The owner must record a deed restriction with the Solano County Recorder before the city issues an occupancy permit.
Vallejo Junior ADU Owner-Occupancy Rule
Some RestrictionsVallejo, CA, Municipal Code Sec. 16.303.03(G); 16.303.05
G.The JADU or primary unit must be owner-occupied. A deed restriction with this requirement shall be recorded with the Solano County Recorder prior to occupancy permit issuance. ... 16.303.05 - Deed restriction. Prior to issuance of an occupancy permit, the applicant shall provide the director with proof of recordation with Solano County of a deed restriction that shall run with the land... For...
ADU Rental Restrictions
Before Vallejo issues an occupancy permit for an ADU, the owner must record a deed restriction with Solano County requiring the rental term to exceed thirty days, per Municipal Code Section 16.303.05. The rule blocks short-term or vacation rental use of ADUs city-wide.
Vallejo ADU Minimum 30-Day Rental Rule
Some RestrictionsVallejo, CA, Municipal Code Sec. 16.303.05
16.303.05 - Deed restriction. Prior to issuance of an occupancy permit, the applicant shall provide the director with proof of recordation with Solano County of a deed restriction that shall run with the land, which requires the rental term of an ADU to exceed thirty days.
Shed & Carport Rules
Vallejo lets homeowners build a detached shed, garage, or garden structure up to 14 feet tall in any residential district under Section 16.501.02, provided it sits on the rear half of the lot at least 5 feet from the rear property line, and stays under the 1,000-square-foot accessory structure cap that applies in the Residential Low Density district.
Vallejo Accessory Building and Shed Rules
Some RestrictionsVallejo, CA, Zoning Code § 16.501.02(C), Accessory Buildings and Structures; Table 16.202-A
C.Requirements. Accessory buildings in mixed-use and non-residential zoning districts shall be subject to the same regulations as main buildings. The following requirements are applicable to accessory buildings and structures in any residential zoning district:1.A detached accessory building may only be constructed on a lot with a legally permitted main building. The accessory building shall be...
Garage Conversions
Vallejo treats a garage converted into an ADU or JADU as an attached unit and waives the usual setback for that conversion under Municipal Code Section 16.303.02(G). No replacement parking is required when the converted garage's spaces are lost, under Section 16.303.02(L).
Vallejo Garage-to-ADU Conversion Rules
Few RestrictionsVallejo, CA, Municipal Code Sec. 16.303.02(E), (G), (L)
A garage converted to an ADU is considered an attached ADU or JADU. ... G.Setbacks. ... No setback is required for:1.An existing garage that is converted to an ADU or JADU, or a portion of an ADU;2.A conversion of an existing accessory structure to an ADU; or3.Placement of an ADU within an existing residence, if side and rear yard access is determined to be sufficient for fire safety by the fir...
Tiny Homes
Vallejo treats a tiny home with no permanent foundation as a manufactured home, and Section 16.325.03 sends it to exactly one place: a licensed mobile home park meeting Chapter 16.328's standards. You cannot park a foundation-less tiny home on an ordinary residential lot; that option is reserved for units set on a permanent foundation under Section 16.325.02.
Vallejo Tiny Home & Mobile Home Placement Rules
Some RestrictionsVallejo, CA, Municipal Code § 16.325.03 (Manufactured Homes Having No Permanent Foundation System)
A manufactured home having no permanent foundation system shall be placed in a mobile home park, including a tiny home. Mobile home parks shall meet the standards and conditions of the mobile home park standards of Chapter 16.328, Mobile Home Parks, and any other requirements adopted by the city council.
Looking for Solano County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Vallejo city rules.
Accessory Structures in Solano County →