There are four preapproved plan sets that may be selected. These plan sets include both floor plans and elevations.

• Plan 1: Studio (375 sq. ft.)
• Plan 2: One Bedroom (550 sq. ft.)
• Plan 3: Two Bedroom (775 sq. ft.)
• Plan 4: Two Bedroom (908 sq. ft.)

The ADU How to Guide provides information on how to determine if the selected site is suitable for an ADU, the different ADU types that may be selected, and how to prepare and submit a permit application. Information specific to the Preapproved ADU program may be located on page 10 of the document.

• ADU Overview 
• ADU How to Guide
• ADU Conversions

The Solano County Planning Collaborative provides resources for those interested in developing an ADU, including:

• Finance tools and information for cost estimation
• Grants, loans, and other funding options
• Information on the construction process and estimated timeline for completion
• Finding a contractor
• Landlord and rental information

Please visit the link to the Solano Planning Collaborative ADU page here https://solano.adu.org  

Contact

Please contact the Community Development Department with any questions.

Pursuant to the State of California Assembly Bill 2533, the City of Vacaville abides by State requirements regarding the permitting of Accessory Dwelling Units (ADUs) or Junior Accessory Dwelling Units (JADUs) constructed before January 1, 2020, without a permit.

To obtain a permit for an unpermitted ADU or JADU constructed before January 1, 2020, please see the information below.

Compliance with Health and Safety Code

The City of Vacaville cannot deny a permit for an unpermitted ADU or JADU that was constructed before January 1, 2020, except when the ADU or JADU does not comply with standards specified in Section 17920.3 of the Health and Safety Code (HSC) that would deem a building substandard

•  A checklist list of conditions specified in Section 17920.3 of the Health and Safety Code may be found in the AB 2533 Notice and Permit Checklist.
• Homeowners may obtain a confidential third-party code inspection from a licensed contractor to determine the unit’s existing condition or potential scope of building improvements before submitting an application for a permit.
• An inspector from the City may inspect the unit for compliance with Health and Safety Code standards and provide recommendations for compliance to obtain a permit.
• The City cannot penalize an applicant for having the unpermitted ADU or JADU.
• Homeowners applying for a permit are not required to pay impact fees or connection or capacity charges except when utility infrastructure is required to comply with Section 17920.3 of the Health and Safety Code.

Contact

Please contact the Community Development Department with any questions.