(A) Zoning. ADUs shall be permitted in the following zones: AR-1, AR-5, AR-10 and AR-40.
(B) Definitions. For the purpose of this section, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
ACCESSORY DWELLING UNIT (ADU). A D-ADU and an I-ADU.
ACCESSORY DWELLING UNIT, DETACHED (D-ADU). A separate structure from the primary dwelling that is located on the same lot or parcel. D-ADUs shall include a kitchen and a bathroom.
ACCESSORY DWELLING UNIT, INTERNAL (I-ADU). A dwelling unit located within the footprint of a primary dwelling. I-ADUs are sometimes called mother-in-law apartments.
OWNER OCCUPANCY. A property owner, as reflected in title records, makes their legal residence at the property. Evidence of owner occupancy may include voter registration, vehicle registration, driver’s license, County Assessor records or other similar means.
(C) Purpose and intent. This section provides a process to allow affordable housing within the town through accessory dwelling units within single-family detached dwellings or in separate detached structures. The standards in this section include reasonable limitations to minimize impact on neighboring properties. The purpose of this section is to provide regulations for accessory dwelling units that are incidental and accessory to a single-family dwelling, where permitted in the zone. Accessory dwelling units are intended to assist in providing housing types that meet the needs of populations of various income levels, ages and stages of life. In accordance with the goals of the general plan and state law, providing tools and methods for creating moderate-income housing is necessary in the town.
(D) Authority. The Town Administrator, or its designee, has the authority to implement and enforce provisions of this section.
(E) Standards. All ADUs must comply with the following:
(1) Code compliance. Conform to all federal, state and local laws, including compliance with the International Building Code, International Fire Code, the County Health Department and other local ordinances.
(2) Number of ADUs. Only one ADU may be created per lot, parcel or property.
(3) Owner occupancy. The property owner must occupy either the primary dwelling or the ADU as their permanent residence. The primary dwelling and ADU may not be rented at the same time. At all times, the ADU must be owned by the property owner.
(4) Short-term rental. ADUs shall not be rented for less than 30 consecutive days.
(5) Building permit. A building permit is required to modify an existing home, building or any new construction on a parcel or lot. Building permit applications shall include a site plan, floor plan, architectural elevations and structural calculations. The applicant shall obtain all necessary other permits and pay all applicable fees before construction, remodeling or any use of an ADU. ADUs shall not be approved on properties with outstanding building code violations or nonconforming uses or structures.
(6) Septic. Septic systems must be inspected to ensure suitability for all proposed ADUs. ADUs are prohibited if the primary dwelling is served by a failed septic tank.
(7) Soil. The town has known arsenic within its jurisdictional boundaries. Any disturbance of soil must comply with the soil testing requirements in §§ 91.15 to 91.24.
(8) Utility meters. ADUs may have up to two electrical meters; notwithstanding, the electrical meters must be in the name of the property owner. Unless approved by the Planning Commission, installing other separate utility meters for an ADU is prohibited.
(9) ADU permit. ADUs rented to a non-family member require a permit from the town.
(10) Parking. In addition to the parking required for the primary unit, one additional off-street parking space shall be provided. In no case shall fewer than three total off-street parking spaces be provided. Any additional occupant vehicles shall be parked on-site. On-street parking shall be reserved for visitors only.
(11) Affidavit. Applicants for all ADUs shall complete an affidavit stating that the owner of the property will live in either the primary dwelling or ADU as their permanent residence. Upon approval of the ADU by the Town Administrator, the affidavit shall be recorded against the property (in the event the property owner decides to sell the home) to alert the future owner of the regulations for the ADU.
(12) Inspections. The Town Administrator shall issue an ADU permit if the applicant complies with this section’s provisions and the ADU is ready for occupancy.
(13) ADU permit. An ADU permit is required to rent out either the primary dwelling or the ADU.
(1) Height. The maximum height for D-ADUs is limited to 35 feet.
(2) Square footage. The total floor area for D-ADUs shall not exceed 900 square feet, or 35% of the footprint of the primary dwelling, whichever is less, unless, in the opinion of the Planning Commission, a greater amount of floor area is warranted.
(3) Lot size. D-ADUs are only permitted on lots one acre or greater.
(4) Number of rooms. D-ADUs shall not have more than two bedrooms.
(5) Setbacks. D-ADUs must comply with the setbacks for the principal dwelling and shall have adequate facilities for all discharge from the roof and other drainage.
(6) Exterior appearance. D-ADUs shall be designed so that the appearance of the lot, building structure and landscaping retains the character of a single-family neighborhood.
(7) Area coverage. Construction of a D-ADU shall not exceed the allowable lot or rear yard coverage standard for the underlying zone. In no event shall a D-ADU cover more than 30% of a rear yard.
(8) Parking. AD-ADU shall have an additional off-street parking.
(9) Distance from dwelling. D-ADU shall be located no more than 200 feet from the principal dwelling on the same lot to ensure proximity and maintain site coherence.
(G) Exception. A property owner may build a new home and use his, her or their existing home as an ADU if his, her or their existing home will comply with the provisions of this section, and the new home will comply with the underlying zoning regulations by the time the new home is habitable and eligible to receive a certificate of occupancy.
(H) Revocation and enforcement.
(1) If any provision of this section is violated, the town may revoke an ADU permit.
(2) The town may enforce the provisions of this section through civil or criminal penalties, including filing a lien against a property owner or any other means allowable by law.
(Ord. 2024-14, passed 12-18-2024) Penalty, see § 154.999