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All ADU Regulations

Redondo Beach, California

Redondo Beach has updated its ADU ordinance to comply with new state laws. Below are the up-to-date requirements for permitting an ADU in Redondo Beach
Updated Jul 27, 2022

Redondo Beach

Redondo Beach is a great place to build an ADU. The weather is perfect for year-round construction, and the city has a relaxed, beachy vibe that makes it a great place to live. The city is also very supportive of ADU development, which makes building one much easier. At Cottage, we can help you build your dream ADU today!


All properties zoned for single family and multifamily use may be eligible to build ADUs.

Number of units

The number of ADUs you’re able to build depends on how your lot is zoned:
  • Lots zoned for single family use may add 1 ADU and 1 Jr. ADU (JADU).
  • Lots zoned for multi-family may add 2 new detached ADUs and at least one conversion ADU (interior conversion of existing building, but no more than 25% of the original number of units. (E.g. an apartment with 4 units may add 2 detached ADUs and 1 conversion ADU.)

Building size

  • The maximum size is 500.0 sq. ft. for a JADU
  • 850 sf for studios or one-bedroom ADUs.

Building height

  • Building height detached ADU: The height of an ADU shall be no more than sixteen (16) feet, measured from the lowest portion of the building that is above ground to the topmost portion of the roof, exclusive of chimneys or vents. No detached ADU structure shall exceed one story in height.


  • Backyard Existing Structure Setback: The minimum distance between a dwelling unit and an accessory structure, or between two (2) accessory structures on the same site shall be five (5) feet.


State Law - No requirements for parking if any of the following true:
  • The accessory dwelling unit is located within one-half mile walking distance of public transit.
  • The accessory dwelling unit is located within an architecturally and historically significant historic district.
  • The accessory dwelling unit is part of the proposed or existing primary residence or an accessory structure.
  • When on-street parking permits are required but not offered to the occupant of the accessory dwelling unit.
  • When there is a car share vehicle located within one block of the accessory dwelling unit.

Want to learn more about ADU regulations in your area?

Book a free consultation and estimate with a Cottage ADU Expert to find out what’s possible on your property!