City ADU planning guide

Long Beach ADU regulations and next steps

Start with the most important planning decisions, then review the detailed city rules below before choosing a detached ADU plan or requesting a property-specific feasibility review.

Long Beach ADU rules overview

Detailed local requirements vary by property. Use this section as a starting point for setbacks, parking, height, utilities, and approval considerations.

Lot fit

Setbacks and buildable area

Start with rear and side setbacks, lot coverage, access, and where a detached ADU can realistically sit on the property.

Design limits

Size, height, and unit type

Check whether the property is better suited for a detached ADU, attached ADU, garage conversion, or junior ADU.

Approvals

Parking, utilities, and permits

Confirm parking exemptions, utility connection requirements, impact fees, and city review steps before finalizing plans.

Key Points:

  • Lot Size There are no minimum lot size requirements for building an ADU in Long Beach.
  • Number of ADUs
    • Single-family lots: Typically, you can build one ADU and one junior ADU (JADU).
    • Multi-family lots: The number of ADUs allowed depends on the type of ADU and the number of existing units on the property.
  • Maximum Size
    • Detached ADUs: Up to 1,200 square feet.
    • Attached ADUs: Up to 50% of the floor area of the main residence.
  • Maximum Height
    • Generally, up to 2 stories or 25 feet.
  • Setbacks
    • Detached ADUs: At least 4 feet from side and rear property lines.
    • Attached ADUs: Specific setbacks depend on the configuration and local zoning regulations.
  • Parking
    • Conversion ADUs and JADUs: No parking required.
    • Attached and detached ADUs: One parking space is required unless the ADU is within 1/2 mile of public transit.

Additional Considerations:

  • Zoning Check the specific zoning regulations for your property.
  • Building Codes Ensure your ADU complies with local building codes.
  • Fire Safety Codes Adhere to local fire safety regulations, especially for attached ADUs.
  • Consult with Professionals Seek advice from a local architect or planner to ensure compliance.

Helpful Resources:

  • City of Long Beach ADU Information
    • https://www.longbeach.gov/lbcd/planning/adus/
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