Chapter 18.66
SECOND UNITS
Sections:
18.66.010 Purpose and applicability.
18.66.010 Purpose and applicability.
This chapter provides development standards related to second units (also referred to as accessory dwelling units or “granny flats”) when permitted according to Table 18.38.030-1 (Permitted Use Matrix for Residential Districts). (Ord. 738 § 1 (Exh. A) (part), 2013).
18.66.020 General provisions.
A. Location. One secondary dwelling unit shall be allowed when accessory to one existing single-family detached unit. The secondary dwelling unit may be established by the conversion of an attic, basement, garage, or other portion of a single-family unit; a detached secondary unit may be established by the conversion of an accessory structure or may be established by new construction.
B. Zoning District. Except as provided in this chapter, all requirements and regulations of the zoning district in which the lot is situated shall apply.
C. Setbacks and Separation. The secondary dwelling unit shall observe a four-foot setback from the rear and side property lines and a ten-foot setback from the main dwelling unit.
D. Height. The structure shall not exceed a single-story height and sixteen feet if the building is detached, excepting existing nonconforming structures. If attached, the height applicable to the primary dwelling applies.
E. Repealed by Ord. 848.
F. Size of Unit. The following applies to the size of the secondary dwelling unit:
1. No less than two hundred seventy-five square feet.
2. No more than eight hundred fifty square feet of floor area or, if the secondary dwelling unit includes more than one bedroom, no more than one thousand square feet of floor area. The eight hundred square feet of floor area may be exceeded when the second unit is an internal conversion of an existing single-family dwelling unit. In such case, the maximum size of the second unit shall not exceed forty percent of the existing dwelling.
3. The ratio of the main unit size in comparison to the secondary dwelling unit size shall not be less than two to one, except as provided for internal conversions of existing structures.
4. The secondary dwelling unit shall be clearly subordinate to the principal single-family dwelling unit on the lot by size, location, and appearance. The existing single-family dwelling unit shall contain a minimum one thousand one hundred square feet floor area. In no case shall the secondary dwelling unit contain more than two bedrooms.
G. Parking. One covered or uncovered off-street parking space shall be provided for the secondary dwelling unit. This requirement shall be in addition to the off-street parking spaces required for the existing residence, unless the secondary dwelling unit is created through the conversion of a garage, carport, or other parking structure, in which case, the removed parking spaces are not required to be replaced.
H. Standards. The establishment of any secondary dwelling unit shall be subject to the following:
1. The secondary dwelling unit shall be in compliance with applicable building, fire, and other health and safety codes.
2. The secondary dwelling unit shall be in compliance with underlying zoning requirements and regulations, except as may be provided in this chapter.
3. The secondary dwelling unit shall be in compliance with the city-adopted design guidelines for residential development, except as may be provided in this chapter.
4. Addresses for secondary dwelling units shall be shown prominently on the frontage of the unit. Frontage should be located facing a street or alleyway and/or have a well-defined entry area.
5. Frontage area landscaping is required and shall follow established guidelines. (Ord. 848, 2020; Ord. 767 (part), 2014; Ord. 738 § 1 (Exh. A) (part), 2013).