Union City ADU Standards

Union City ADU Standards: LiveLarge Home Guide

If you’re considering building an ADU or JADU in Union City, LiveLarge Home is here to guide you through the city’s regulations and ensure your project is a success. Below is a summary of the key requirements and steps for building an ADU in Union City.

ADU Types:

  • Repurposed ADU: Conversion of existing space such as a garage or detached structure.
  • Detached ADU: A newly built, independent unit on your property.
  • Junior Accessory Dwelling Unit (JADU): A small unit within an existing single-family home.

Maximum Size:

  • ADU:
    • 850 sq. ft. for studio/1-bedroom
    • 1,000 sq. ft. for 2+ bedrooms
  • JADU: Maximum 500 sq. ft.

General Information: ADUs are an excellent way to add valuable living space to your property, whether for family members, renters, or as a potential rental income source. These units contribute to Union City’s housing goals while offering flexibility for homeowners.

Key Regulations:

Detached ADU:

  • Maximum Height: 18 feet, or 16 feet if within a flood zone.
  • Setbacks: At least 4 feet on the side and rear yards.
  • Separation: Minimum of 5 feet from other structures on the property.

Attached ADU:

  • Maximum Height: As per zoning regulations, typically up to 16 feet.
  • Setbacks: Same as the primary dwelling.
  • Separation: At least 5 feet from other structures.

JADU:

  • Maximum Height: Same as the primary dwelling.
  • Setbacks: N/A for JADUs.
  • Separation: At least 5 feet from other structures.

Kitchen Requirements:

  • ADU: Must include a full kitchen with sink, refrigerator, cooktop/oven, and adequate counter space.
  • JADU: Must include a kitchenette (e.g., countertop cooking appliance, sink, and refrigerator).

Application Process:

  • 1.  Review Regulations: Confirm zoning compliance and building codes by contacting the Planning and Building Divisions.
  • 2. Submit Building Permit: Prepare and submit your plans to the Building Division.
  • 3. Permit Issuance & Construction: After any necessary revisions, your permits will be issued, and you can begin construction.
  • 4. Inspections & Occupancy: Schedule inspections as required. Once the ADU or JADU passes, it is ready for occupancy.

For more information, contact the Union City Planning Division at (510) 675-5379 or via email at planning@unioncity.org.

Let LiveLarge Home be your trusted partner for your ADU journey in Union City. With our expertise in design, construction, and pre-approved plans, we ensure your ADU project aligns with local standards and maximizes your property’s potential. Contact us today to start your ADU project!

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