Ordinance 3774-20 - Laserfiche WebLink

Table 8-6:ADU Standards Subject Standard a) R-S, R-1,and R-2 zones:One of the units must be owner-occupied 1) Owner Occupancy: b) Other zones: Owner occupancy not required a) No minimum lot size required 2) Lot Requirements: b) Only one ADU per lot c) An ADU may not be segregated from ownership of the principal dwelling a) Single-family dwelling unit.An ADU attached or detached from a single- family dwelling unit shall not exceed a gross floor area the lesser of 1) 15%of the total lot area;2) 1,000 square feet;or 3)the principal dwelling's building footprint. 3) ADU size: b) Duplex,triplex or townhome.An ADU attached or detached from a duplex,triplex or townhome shall not exceed a gross floor area the lesser of 1)7.5%of the total lot area;2) 1,000 square feet;or 3)37.5%of the gross floor area of the dwelling; provided,however,that an ADU is permitted to be no less than 440 square feet. a) See applicable zone(EMC 19.06) 4) Lot Coverage: b) An increase of five percent(5%)may be allowed, using Review Process I, if necessary to allow a DADU on an existing developed lot that meets all other requirements of this section. 5) Maximum height: See EMC 19.22 6) Setbacks: See EMC 19.06 7) Vehicle access: See city standards in EMC Title 13 and EMC 19.34 Any ADU located within an Historic Overlay zone must also comply with the 8) Historic Overlay: design requirements of the historic overlay and be reviewed by the city's Historical Commission with a recommendation to the planning director B. Design Standards An ADU shall meet the design standards in this section.The planning director shall consider the impact that any requested modification will have on abutting properties in terms of aesthetics, privacy,view impacts,and compatibility with the character of other dwellings. 1. Attached ADUs.The appearance and character of the dwelling shall be maintained when viewed from the surrounding neighborhood. a. Single-family(1-unit)and Townhouse dwellings.Only one entrance to the residential structure may be located on any street side of the structure;provided, however,that this limitation shall not affect the eligibility of a residential structure which has more than one entrance on the front or street side on the effective date of the ordinance codified in this section. b. Duplex and Triplex(2-and 3-unit)dwellings.Any ADU attached to a 2-or 3-unit dwelling shall comply with the front porch and entrance requirements set forth in EMC 19.08.050. 2. Historic Overlay Zones.On lots located in the historic overlay zone,an attached ADU shall comply with the standards of subsection 1(above)of this section.A DADU shall comply with the development and design standards of the H overlay zone. 3. Detached ADUs.The planning director shall promulgate a design manual of examples and best practices for the design of DADUs and compatibility with the surrounding neighborhood.The city shall have the authority to require changes to the design of a DADU that is not consistent with best practices identified in the design manual. In addition: a. The DADU shall be designed to give the appearance that it is secondary to the principal dwelling. b. Siding,roofing,windows and building trim materials shall visually match those used on the principal dwelling. c. The roof pitch shall be similar to the predominant roof pitch on the principal dwelling. Ch.19.08,Residential Development Standards 11 City Council Action(11/04/2020)