Development Standards

You may build an Accessory Dwelling Unit (ADU) in many residential Zoning districts. Please contact the Planning Department to determine if your property may have an ADU.

Accessory Dwelling Unit Development Standards Table

Interested in Building an ADU?

For more information on resources related to an ADU development, please visit our ADU Programs & Resources page for more information on resources related to ADU development.

Floor Area for purposes of an ADU

  • ADUs ≤ 800 s.f. (living area, excluding decks, etc.) are not limited by lot coverage, FAR, and open space requirements
  • ADUs > 800 s.f. are limited by lot coverage, FAR, and open space requirements
  • ADUs in multi-family developments are not limited by lot coverage, FAR, or open space requirements
  • Internal Conversions in multi-family dwellings must be created out of space that is not used as livable space (i.e. attic, basement, storage room)

What is a JADU?

  • An ADU ≤500 s.f.
  • Contained entirely within an existing or proposed home (not a garage)
  • Must fit within the allowed 45% Floor Area Ratio
  • Must have an efficiency kitchen at the minimum
  • Bathroom may be shared or independent from principal unit
  • Converted out of habitable living space

Did You Know?

An accessory dwelling unit:

  • Is exempt from Floor Area Ratio and Lot Coverage limitations, if ≤ 800 s.f.
  • May have a separate address
  • May be rented
  • May be located as close at 4 ft from the rear and side property lines, if ≤ 800 s.f.
  • May not be sold separately from the principal dwelling unit
  • May not have an interior connection with the primary dwelling unit except if it is a JADU with a shared bathroom
  • Does not have to pay park, storm drain and school impact fees, if < 750 s.f.
  • May be located on the second story only if:
    • It is a conversion of existing living space
  • Parking may not be required if you add an ADU or convert a garage to an ADU:
    • One additional off-street parking space, if the principal dwelling unit has less than the minimum off-street parking spaces for the applicable residential zoning district in which it is located. However, no parking requirements, if any of the following apply to the property:
      • Is within one-half (1/2) mile of a public transit stop; or
      • Located in an architecturally and historically significant historic district; or
      • Occupant of the unit is not allowed/offered a required on-street parking permit; or
      • Located within one block of a car share vehicle pick-up location.
    • If required enclosed parking is converted to an ADU, no replacement parking is required.
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