A Garage Conversion ADU is a residential dwelling unit that provides complete independent living facilities for one or more persons and the unit either a) converts the existing garage space or b) is built above the existing garage space. It shall include permanent provisions for living, sleeping, eating, cooking and sanitation.

At a Glance

Maximum Size Local ordinance can limit, but must allow 850 sq ft for a Studio/1 bedroom and 1000 sq ft for 2+ bedrooms. State maximum size is 1200 sq ft unless converting existing space which would have no maximum.
Lot Size No minimum lot size requirements for an existing legal lot. Any newly created lot must comply with local zoning regulations.
Kitchen Full
Height Limit State law does not restrict but local ordinance must allow at least 16'.
Bathroom Toilet, Shower, Sink
Occupancy Owner occupancy may not be required for permitting through the end of 2024
Side and Rear Setbacks Minimum 4 feet. Front yard setbacks as required by local ordinance.
Development and Impact Fees ADUs 750 sq ft and smaller are not subject to impact fees by law. Over 750 sq ft they shall be proportional for the property.Over 750 sq ft they shall be proportional for the property.
Homeowners Associations An HOA must allow construction on separate interest properties. HOAs cannot restrict homeowner from renting out ADU as long as the term is for 30 days or more.
Solar Panels Title 24 Energy Code requires solar panels on all new construction..
Ingress/Egress Must have separate entrance. Up to additional 150 sq ft to size limit only if for the purpose of adding ingress/egress.
Fire Sprinklers Not required if they are not required on the main house.
  • Phone:
    (951) 667-8757

  • Temescal Valley, California

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