Accessory Dwelling Units (ADUs)


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Accessory Dwelling Units (ADUs) are residential units located on the same lot as an existing or proposed single- or multi-family principal dwelling and must provide complete independent living facilities for one or more people, including permanent provisions for living, sleeping, eating, cooking, and sanitation.   They are sometimes called “granny units” or “in-law units.”

A Junior Accessory Dwelling Units (JADUs) is a dwelling unit of no more than 500 square feet in size that is contained within the existing or proposed single-family principal dwelling, including an attached garage.  The JADU must have an efficiency kitchen, separate exterior entrance and must have a separate bathroom or access to a bathroom located in the principal dwelling unit. The JADU or the single-family principal dwelling must be owner-occupied.

Can I build an ADU/JADU on my property? Accessory dwelling units are allowed in the following zoning districts when constructed with an existing or proposed single- or multi-family principal dwelling, or in other districts on lots with an existing, lawfully constructed principal dwelling.

Zoning District

  • R (Residential)
  • NC (Neighborhood Commercial)
  • NTS (North Todos Santos)
  • DP (Downtown Pedestrian)
  • DMX (Downtown Mixed-Use)
  • CO (Community Office)
  • CMX (Commercial Mixed-Use)

To find out the zoning of your property, view the Public Data Parcel Viewer.  You may also refer to the PermitPal to obtain information on zoning, permits, and fees.