Part III Use Standards | 16.303 Accessory Dwelling Units
16.303 ACCESSORY DWELLING UNITS 16.303.01 PURPOSE AND APPLICABILITY The provisions outlined in this Chapter are intended to: A. Implement California Government Code Sections 65852.2 and 65852.22 for the development of accessory dwelling units to increase the supply of smaller and more affordable residential units; B. Expedite small-scale infill development; and C. Implement the goals of the General Plan 2040 Housing Element to facilitate production of housing to accommodate Vallejo’s fair share of the regional housing demand and Increase the overall supply and range of housing options in Vallejo. Any application for an Accessory Dwelling Unit (ADU) or Junior Accessory Unit (JADU) that meets the location and development standards as provided in Section 16.303.02, Required Standards shall be processed ministerially; requiring a Zoning Compliance Review, pursuant to Chapter 16.603, Zoning Compliance Review, and shall not require a Discretionary Zoning Permit, per California Government Code Section 65852.2.
16.303.02 REQUIRED STANDARDS A. Zoning. The lot is zoned for residential use and contains no more than one single-unit residential dwelling or primary unit, or one multiple unit structure which can also be constructed on the lot in conjunction with the construction of the ADU. B. Location on a lot. The ADU can either be attached to the primary residential dwelling unit, located within the living area of the primary unit or an accessory structure, or detached from the primary unit if located on the same lot as the primary unit. An accessory structure includes a studio, pool house, or other similar structure. C. Subdividing. No lot with an ADU shall be subdivided so that an ADU is on a separate lot from the primary unit with which it is associated. D. Number per lot. More than one ADU may be located on any lot under the following circumstances and subject to compliance with all of the applicable requirements of this Chapter:
Draft: 01/06/2021
1. One JADU is within the primary unit structure and one ADU is located either within the existing primary unit, in an addition to the existing unit or in a detached structure; 2. One ADU or more is created through conversion of existing non-habitable space within a multipleunit building as long as the total number of accessory units does not exceed 25 percent of the total number of units within the building; or 3. Up to 2 ADUs are created in a detached structure on the same lot as an existing multiple unit building. 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 50 percent of the total floor area of the primary residential unit. The floor area of a detached ADU shall not exceed 1,200 square feet. See Section 16.303.03, Junior Accessory Development Units, for size of JADU. A garage converted to an ADU is considered an attached ADU or JADU. F. Height. A new detached ADU may not exceed 25 feet in height or 2 stories, whichever is less. The height of an ADU shall not exceed the height of the primary unit unless the ADU is above a detached garage and is no closer to the front property line than the entire primary unit. An ADU located entirely within an existing structure shall not be subject to these height regulations. G. Setbacks. A new detached ADU constructed above a garage shall be a minimum of 5 feet from the side or rear property line. A new detached ADU shall be a minimum of 4 feet from the side property line and the primary residential unit. 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; or 3. Placement of an ADU within an existing residence, if side and rear yard access is determined to be sufficient for fire safety by the Fire Division. H. Lot Coverage. The construction of an ADU shall not cause lot coverage to exceed the maximum allowed on the parcel by this Zoning Code. I. Connectivity and Access. No passageway shall be required between an ADU and the primary unit. An ADU that is created from conversion of floor within an existing dwelling unit or in an addition may have independent exterior access from the existing unit. TITLE 16: ZONING CODE | VALLEJO, CA
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