Sec. 11-1.30.06

Accessory dwelling units

• Front setbackSetbackThe distance a building must be held back from a lot line. for ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.20 ft

  ADUs that are subject to this subsection (F) must conform to 20-foot front setbacks, subject to subsection (F)(1)(c) above.

• Impact fee threshold750 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  No impact fee is required for an ADU that is less than seven hundred fifty (750) square feet in size.

• Max FARFloor area ratio (FAR)Total floor area divided by lot area — an FAR of 2.0 permits 20,000 sq ft of floor on a 10,000 sq ft lot. for A-1/R-1 lot with ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.60 pct

  No ADU subject to this subsection (F) may cause the total FAR of an A-1 or R-1-zoned lot to exceed sixty (60) percent, subject to subsection (F)(1)(c) above.

• Max heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. of attached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.25 ft

  An ADU that is attached to the primary dwelling may not exceed twenty-five (25) feet in height or the height limitation imposed by the underlying zone that applies to the primary dwelling, whichever is lower.

• Max heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. of detached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.16 ft

  A detached ADU created on a lot with an existing or proposed single-family or multifamily dwelling unit may not exceed sixteen (16) feet in height.

• Max heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. of detached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. on multifamilyMultifamily dwellingA building of four or more dwelling units. Where zoning is most restrictive. lot with >1 story18 ft

  A detached ADU created on a lot with an existing or proposed multifamily dwelling that has more than one story above grade may not exceed eighteen (18) feet in height.

• Max heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. of detached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. near transit18 ft

  A detached ADU may be up to eighteen (18) feet in height if it is created on a lot with an existing or proposed single-family or multifamily dwelling unit that is located within one-half (½) mile walking distance of a major transit stop or high quality transit corridor, as those terms are defined in Public Resources Code § 21155, and the ADU may be up to two (2) additional feet in height (for a maximum of twenty (20) feet) if necessary to accommodate a roof pitch on the ADU that is aligned with the roof pitch of the primary dwelling unit.

• Max lot coverageLot coverageThe share of a lot that buildings may cover, as a percentage. for R-2/R-3 lot with ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.80 pct

  No ADU subject to this subsection (F) may cause the total lot coverage of an R-2 or R-3 zoned lot to exceed eighty (80) percent, subject to subsection (F)(1)(c) above.

• Max size for 2+ bedroom ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.1,000 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  The maximum size of a detached or attached ADU subject to this subsection (F) is eight hundred fifty (850) square feet for a studio or one-bedroom unit and one thousand (1,000) square feet for a unit with two (2) or more bedrooms.

• Max size of attached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. as % of primary50 pct

  An attached ADU that is created on a lot with an existing primary dwelling is further limited to fifty (50) percent of the floor area of the existing primary dwelling.

• Max size for studio/1-bedroom ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.850 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  The maximum size of a detached or attached ADU subject to this subsection (F) is eight hundred fifty (850) square feet for a studio or one-bedroom unit and one thousand (1,000) square feet for a unit with two (2) or more bedrooms.

• Max storiesStoreysHabitable floor levels. Whether a basement or attic counts is defined by the local code. for ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.1 storiesStoreysHabitable floor levels. Whether a basement or attic counts is defined by the local code.

  No ADU subject to this subsection (F) may have more than one story, except that an ADU that is attached to the primary dwelling may have the stories allowed under subparagraph (E)(2)(d) of this section.

• Max storiesStoreysHabitable floor levels. Whether a basement or attic counts is defined by the local code. for attached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.2 storiesStoreysHabitable floor levels. Whether a basement or attic counts is defined by the local code.

  Notwithstanding the foregoing, ADUs subject to this subsection (E)(2)(d) may not exceed two (2) stories.

• Minimum interior wall heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. of ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.7 ft

  The interior horizontal dimensions of an ADU must be at least ten (10) feet wide in every direction, with a minimum interior wall height of seven (7) feet.

• Minimum interior width of ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.10 ft

  The interior horizontal dimensions of an ADU must be at least ten (10) feet wide in every direction, with a minimum interior wall height of seven (7) feet.

• Minimum size that cannot be reduced by other standards800 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  no application of the percent-based size limit in subsection (F)(1)(b) above or of an FAR, front setback, lot coverage limit, or open-space requirement may require the ADU to be less than eight hundred (800) square feet.

• Owner occupancy required for JADU

  As required by state law, all JADUs are subject to an owner-occupancy requirement.

• Minimum rental term for ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage./JADU30 days

  No ADU or JADU may be rented for a term that is shorter than thirty (30) days.

• Side and rear setbackSetbackThe distance a building must be held back from a lot line. for ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.4 ft

  ADUs that are subject to this subsection (F) must conform to four-foot side and rear setbacks.