Accessory Dwelling Units (ADUs)

Accelerator Program

ADU Accelerator Rebate Program

The Senate District 7 ADU Accelerator Program, piloted by Senator Steve Glazer, is composed of 15 cities in the East Bay of the San Francisco Bay Area, including Antioch.

This program provides individual rebates of up to $7,500 to property owners for new ADU units and up to $30,000 for new ADU units that are deed restricted to low-income households (minimum of 20 years.) As the purpose of the program is to encourage the construction of smaller ADU units, there will be no rebates for units over 1,000 square feet.

ADUs are attached or detached residential dwelling units that provide complete independent living facilities for one or more persons on a lot with an existing (or proposed) primary residence.

The construction of an ADU can help a household:

• Generate rental income to lower the cost of housing
• Provide housing for caretakers or family members, allowing homeowners to remain independent with aging or disabilities
• Provide a smaller home for seniors who then rent out their exiting house.
• Provide housing for lower income individuals and families
• Provide affordable housing during a housing crisis.

The City is matching the low-income rebate amounts with Permanent Local Housing Allocation (PLHA) funding to double the rebates for low-income ADUs to encourage low-income ADU production in Antioch. Antioch homeowners will be able to access up to $30,000 for the construction of a low-income ADU less than 500 square feet.

ADU Accelerator Program Guidelines

Available Funding for Antioch: $ 216,228.77.  Rebates will be provided on a first-come, first-served basis until all the funds are expended. (Additional PLHA funds will be used to double rebates for low-income restricted ADUs)

Program Period:  Until September 30, 2026 (or sooner, if funds are expended).

Amount of Rebate is based on the following scale:   

Non-Income Restricted ADUs 

Individual rebates of up to $7,500 will be provided to property owners who obtain building permits to construct an ADU and receive a certificate of occupancy within 18 months of issuance. Rebates are awarded based upon the following sliding scale:

• $7,500 for units < 500 square feet
• $5,000 for units between 501-750 square feet
• $2,500 for units between 751-1,000 square feet
• No rebates for units over 1,000 square feet.  

Low-Income Restricted ADUs  

Individual rebates of up to $30,000 will be provided to property owners who obtain building permits to construct an ADU and receive a certificate of occupancy within 18 months of issuance. Rebates will be provided for units that are deed restricted to low-income households for a minimum of 20 years; based on the following sliding scale:

• $30,000 for units < 500 square feet
• $20,000 for units between 501-750 square feet
• $10,000 for units between 751-1,000 square feet
• No rebates for units over 1,000 square feet.  

Rebate Restrictions:

• Only one rebate will be awarded per residential lot/APN.
• Rebates are limited to individual homeowners, with one rebate allowed per individual or entity.
• Rebate recipients may want to consult with a tax professional, ideally before accepting the rebate, to determine how it will impact your financial situation.

Application Process 

• When applying for an ADU building permit on the Civic Access portal, a question will ask if the homeowner would like to be in the rebate program.
  • Please note, homeowners may need to coordinate with their contractor/design professional if the contractor/design professional is applying for the permit online.
• After receiving a Certificate of Occupancy within 18 months, rebate checks will be mailed to the homeowner.

Questions? Contact the Antioch Planning Division at

(925) 779-6159 or email Planning@antiochca.gov