Pasco, WA Building Setbacks & Zoning: Structure Height Limits (2026)

Pasco sets maximum building height by zoning district under Title 25, and the City of Pasco Quick Zoning Reference Table summarizes the principal-building limits. Low-density and suburban residential zones RT, R-S-20, R-S-12, R-S-1, R-1, R-1-A, R-1-A2 and R-2 each cap maximum building height at 35 feet. The higher-density residential zones step up: R-3 allows up to 40 feet and R-4 allows up to 45 feet. Accessory buildings are limited separately, generally to 15 feet maximum accessory height (with a note that in some zones the limit can increase to 18 feet if the lot exceeds 12,000 square feet), and detached garages/shops are similarly capped (commonly 15-18 feet by zone). Accessory structure height in several zones is also tied to the dwelling height ('EHD' = equal to the height of the dwelling, measured from grade to the average roof height) for the accessory side setback rule. Because the table is a planning summary and the controlling text is in the individual zone-district chapters of Title 25 (and the standards are periodically amended), always confirm the exact maximum height for your specific zone and structure type with Pasco Community and Economic Development before designing. Height is generally measured from grade to the average height of the highest roof surface; chimneys and certain rooftop features may have separate treatment.