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

030 (Development Standards) sets Standard G, "Maximum building height (feet)," by zone: 35 feet in the RC (rural conservation) and R-1 zones, 35 feet in R-2, 45 feet in R-3, 75 feet in R-4, 75 feet in R-NM, and 45 feet in the R-F zone. The same table's Standard H sets a separate, generally lower cap for accessory buildings: 35 feet in RC and R-1, dropping to 24 feet in R-2 through R-F. 030 exempts only specific features from the height cap, including cupolas that extend no more than three feet above the roofline, church spires or steeples approved under a conditional use permit, transmission line towers built to city standards, residential television antennas used for reception only, and water tanks or standpipes under city or water-district jurisdiction.

Athletic field or playground lighting is exempted only in the P-1 public use zone. 70 ACC, and the table itself notes that setbacks, lot widths and landscaping strips are subject to the city engineer confirming that utility infrastructure, access and street elements can still be accommodated. A property owner planning a structure that exceeds the applicable zone's height limit should apply for a variance before beginning construction rather than build first and seek relief afterward, since ACC Title 18 has no self-executing exception for exceeding the base height figures outside the listed exemptions.