18A.37.020 General Provisions for Residential Accessory Uses and Structures.
A. In all zones, there shall be no limit as to the number of accessory uses allowed on a lot provided:
1. The use meets all applicable development regulations; and
2. The use is accessory to a lawfully established residence, except for structures listed in PCC 18J.17.020.E.
B. Structures typically accessory to a residence, such as garages or carports, greenhouses and storage buildings, may be permitted without a principal use up to a maximum of 576 total square feet. Such structures shall not be used as living accommodations. Fences and retaining walls shall not be considered a principal use and shall not be limited to the 576 square feet maximum when no principal use is located on site.
C. In residential zones, on lots of less than 1 acre in size, detached accessory structures shall not exceed 2,000 total square feet, except that the area of a detached Accessory Dwelling Unit (ADU) shall not apply. Shared garages or carports allowed in PCC 18J.17.020.E are exempt from the 2,000 square-foot size limit.
D. All accessory uses must be customarily incidental and subordinate to the principal building or use of the lot upon which it is located.
E. At such time as the principal use or structure is discontinued, all accessory uses and structures to the principal use or structure shall also be discontinued or removed.
F. Where there is a question regarding the inclusion or exclusion of a particular accessory use within any zone classification, the Director shall have the authority to make the final determination. The determination shall be based upon the general standards of this Section and an analysis of the compatibility of the use or structural size and placement with consideration of the predominant surrounding land use pattern and with the permitted principal uses of the zone classification.