Pasco, WA Accessory Structures: Shed Rules (2026)

Pasco regulates sheds as residential accessory structures under PMC 25.65.030 (Permitted accessory uses). The city's zoning allows storage buildings cumulatively not exceeding 200 square feet of gross floor area and 15 feet in height, provided no container storage (use of shipping/cargo containers) is permitted. Larger or taller storage structures, or those that do not fit the permitted-accessory category, may require a special permit or be treated differently. The city's published development standards require a minimum distance of 6 feet between a habitable structure and a non-habitable structure such as a shed or garage. Accessory buildings generally follow the setback rules of the underlying zoning district (set out in the Title 25 zone-district standards), and the Planning Division publishes a Quick Zoning Reference Table to help residents place a shed, detached garage, or shop on a residential lot. A building permit is generally required for larger structures and for any electrical or plumbing work, while very small storage sheds may fall below the building-permit threshold under the adopted building code (PMC Title 16). Because exact setback distances depend on your zoning district and the size and use of the shed, verify your zone, setbacks, and permit requirements with the City of Pasco Community and Economic Development / Planning Division before building.