The City of Pinole permits ADUs across most residential zones. Pinole follows both state and local ADU laws, allowing most single-family homes to build one detached ADU and one Junior ADU (JADU) per lot. Multi-family properties may be eligible for multiple ADUs, depending on site conditions.

Pinole aligns with California’s broader ADU legislation but has its own requirements for height, setbacks, and design review.

• Detached ADU: A self-contained unit that is physically separate from the primary residence.
• Attached ADU: A unit that is physically connected to the primary residence but maintains independent living facilities.
• Conversion ADU: An existing space within the primary residence or an accessory structure that is converted into a separate living unit.
• Junior ADU (JADU): Up to 500 sq ft, created within the existing walls of a single-family home. It may share some facilities with the main house, such as a bathroom, and requires a separate entrance.

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• Maximum Size:
  
  • Detached: Up to 800 sq ft
  • Attached: 50% of the square footage of the primary residence’s living area, with a cap of 1,000 sq. ft.
• Setbacks:
  
  • Minimum 4 ft from side and rear property lines
• Height Limits:
  
  • Typically, 16 ft, Height limit of the zoning district.
• Parking Requirements:
  
  • Additional parking is not required if the ADU is:
    
    • Within an existing or proposed residence or an existing accessory structure
    • Within ½ mile of public transit
    • Located in a historic district
    • On a lot that needs an on-street parking permit but one is not offered to the ADU
    • Within on block of a car-share vehicle.

To build an ADU in Pinole, the following approvals are typically required:

• Building Permit application with complete plan set and payment information
• Development Restriction Recording form with notarized signature
• Address Assignment application for ADU/JADU
• Proof of recording with Contra Costa County Clerk Recorder’s Office
• Review of applicable impact fees for ADUs 750 sq. ft. or greater
• Compliance with Municipal Code, fire code, and utility connection requirements
  

Homeowners should also review applicable impact fees, the City’s current fee schedule, utility connection requirements, and compliance with Municipal and fire codes.

Permit review times vary but are typically between 60 days depending on project complexity and city workload. Projects requiring corrections may take longer. Engaging professionals familiar with Pinole’s ADU process can help streamline approval.

Most residential zones in Pinole are eligible for ADUs, including R-1, R-2, and R-M zones. There are no minimum lot sizes for ADUs in most areas of Pinole. Some hillside or environmentally sensitive zones may have special restrictions.

For the most current and complete information, refer directly to the City of Pinole.