Pasco, WA Building Setbacks & Zoning: Setback Rules (2026)

Setbacks in Pasco are set by zoning district, not a single citywide number, and are governed by Title 25 (Zoning). According to the City of Pasco Quick Zoning Reference Table, the standard low-density residential zones share common minimums: R-S-1, R-1, R-1-A, R-1-A2, R-2, R-3 and R-4 each require a 20-foot minimum front setback, 5-foot minimum side setbacks, and 5-foot minimum rear setbacks. The larger-lot suburban zones are more generous: R-S-20 and R-S-12 require a 25-foot front setback, 10-foot side setbacks, and a 25-foot rear setback. The low-density RT zone requires 50-foot setbacks on all sides. Accessory buildings have their own (generally smaller) side and rear setbacks. Setback details for new residential development also appear in the zone-district standards (Ch. 25.22 and the individual zone chapters such as Ch. 25.45 for R-1). Front-yard setbacks are measured from the lot line, except where the sidewalk is built on the property, in which case measurement is from the edge of the sidewalk. Certain projections are allowed: eaves, cornices and similar ornamentation may extend up to two feet into a setback, and steps, platforms and open porches may extend into the rear-yard setback up to four feet. Because numbers differ by district and the code is periodically amended, confirm your exact zone and current setbacks with Pasco Community and Economic Development before designing.