18.165.020 Permits – Eligibility and application.
A. Authorization for ADUs by Zoning District. ADUs are allowed in all residential zoning districts and may be attached or detached. Attached ADUs are allowed only when applicants provide written evidence from the proper fire and building officials that the proposed ADU conforms to building and fire code regulations.
B. Approval Process. A maximum of two accessory dwellings are allowed per legal single-family dwelling. One unit must be a detached accessory dwelling, or in a portion of a detached accessory building (e.g., above a garage or workshop), and one unit must be attached or interior to the primary dwelling (e.g., an addition or the conversion of an existing floor). ADUs and the primary dwelling associated with the ADU shall not be used for the purpose of a short-term rental (STR) as defined in TMC 18.15.020.
C. Application Information.
1. Staff shall provide application forms based on the standards identified in TMC 18.165.030(C) and the required data in TMC 18.150.040.
2. Proposals for ADUs in the Old Town district shall be subject to the Old Town design district standards identified in Chapter 18.140 TMC.
D. Systems Development Charges. For the purposes of calculating systems development charges (SDCs), ADUs shall be regarded as apartments and all SDCs shall be assessed accordingly, except the following modifications will be factored into the calculations:
1. If the ADU is attached or an existing structure being converted and does not add more impervious surface area (i.e., roof), no SDC for storm water will be assessed. However, any additional impervious surface as the result of an addition shall be assessed on a per-square-foot basis. New detached ADUs shall also be assessed on a per-square-foot basis. SDCs for storm water, if required, will be assessed based on the ratio of primary dwelling size versus ADU size.
2. SDCs for water will only be assessed if a new meter is installed and based on the ratio of primary dwelling size versus ADU size.
3. SDCs for parks will be assessed based on the ratio of primary dwelling size versus ADU size.
4. SDCs for transportation will be assessed based on the ratio of primary dwelling size versus ADU size.
5. Rogue Valley Sewer Services or its successor shall determine SDCs for sanitary sewer. [Ord. 943 § 1 (Exh. A), 2018; Ord. 817 § 8-3L.520, 2006.]