Accessory dwelling units shall comply with all provisions of the base, overlay, or specific plan zone, except as modified by this section.
A. Residential Density. Even if requirements such as floor area ratio, proportionality (i.e. 50% threshold) to the existing or proposed primary dwelling unit's floor area, or other zoning standards cannot be met, the city must still allow an 850 square foot unit with setbacks of four feet from side and rear property lines, and up to the maximum building height permitted by the underlying zoning district.
B. Primary Dwelling Unit Required. The lot shall contain an existing detached single-unit dwelling at the time an application for an accessory dwelling unit is submitted, or the application for the accessory dwelling unit may be made in conjunction with the development of the primary dwelling. For ADUs in multi-family dwellings see subsection
C below.
C. Number of Units. No more than one accessory dwelling unit and one junior accessory unit shall be permitted on any one lot. If the lot has an existing multifamily unit building then multiple ADUs are allowed in portions of existing multifamily dwelling structures that are not used as livable space, including, but not limited to, storage rooms, boiler rooms, passageways, attics, basements, or garages. Two detached ADUs can be added on a lot that has an existing multifamily dwelling.
D. Floor Area. The allowable square footage is 850 square feet for a one-bedroom ADU and 1,000 for an ADU over one bedroom. Lots larger than one acre can continue to have an ADU up to 1,200 square feet. The Junior ADU maximum square footage is 500 square feet.
E. Setbacks. Accessory dwelling units shall be setback four feet from the side and rear property lines except as provided below:
1. Garage Conversions. No setback shall be required for an existing, legally permitted garage that is converted to an accessory dwelling unit. However, no addition may be constructed to the converted garage that increases the encroachment into the setback.
2. Accessory Dwelling Unit Constructed Above a Garage. If an accessory dwelling unit is constructed above a garage, a setback of no more than four feet from the interior lot lines shall be required for the accessory dwelling unit.
F. Design and Materials. The exterior design and materials of the accessory dwelling unit shall be visually compatible with the primary dwelling regarding the roof, building walls, doors, windows, horizontal/vertical expression, and architectural detail.
G. Utilities. Accessory dwelling units shall be metered separately from the primary dwelling for gas, electricity, communications, water, and sewer service except for accessory dwelling units constructed entirely within existing structures pursuant to subsection
I, Special Provisions for Accessory Dwelling Units Constructed Entirely Within Existing Structures.
H. Required Parking. In addition to the required parking for the primary dwelling, an accessory dwelling unit shall be provided pursuant to Chapter
17.27, Parking and Loading.
1. Parking Configuration. The automobile parking for the accessory dwelling unit may be provided in setback areas and through tandem parking unless the Public Works Director finds that parking in setback areas or tandem parking is not feasible based upon the topographical conditions of the specific site or region or fire and life safety conditions.
2. Parking Exceptions for Certain Accessory Dwelling Units. Automobile parking is not required for an accessory dwelling unit in any of the following instances:
a. The accessory dwelling unit is located within one-half mile of public transit.
b. The accessory dwelling unit is located within an architecturally and historically significant historic district.
c. The accessory dwelling unit is contained entirely within the permitted floor area of the existing primary residence or an existing accessory structure.
d. When on-street parking permits are required but not offered to the occupant(s) of the accessory dwelling unit.
e. When there is a car share vehicle located within one block of the accessory dwelling unit.
f. When a garage, carport, or covered parking structure is demolished in conjunction with the construction of an accessory dwelling unit or converted to an accessory dwelling unit.
I. Special Provisions for Accessory Dwelling Units Constructed Entirely Within Existing Structures. Notwithstanding any other provision of this section, The city shall ministerially approve an application for a building permit to create an accessory dwelling unit and shall not require the applicant to install a new or separate utility connection directly between the accessory dwelling unit and the utility or impose a related connection fee or capacity charge if all of the following requirements are satisfied.
1. The lot is located with a Residential Zone on a lot that otherwise would not qualify for more than one dwelling unit.
2. The construction will result in no more than one primary residence and one accessory dwelling unit, and one junior accessory dwelling unit on the lot.
3. The proposed accessory dwelling unit will be contained entirely within the permitted floor area of the existing primary residence or an existing accessory structure on the same lot as the primary residence.
4. The proposed accessory dwelling unit will have exterior access that is independent from the existing primary residence.
5. The interior setbacks of all structures on the lot are sufficient for fire safety.
For purposes of this subsection to be considered, an existing primary residence or an existing accessory structure, the structure must be a legally permitted structure that conforms to current zoning or is legal nonconforming as to current zoning. Accessory dwelling units constructed pursuant to this subsection shall not be required to provide fire sprinklers if they are not required for the primary residence. |
(Ord. 19-1 § 3; Ord. 20-4 § 2)