Canyon County, ID Building Setbacks & Zoning: Setback Rules (2026)

Table 1 of Canyon County Code § 07-10-21(1)A fixes the baseline yard setbacks for the Agricultural Zone A and the Residential Zones R-R, R-1 and R-2: 30 feet front, 10 feet side, 20 feet rear and 30 feet on a corner in the Agricultural Zone, and 20 feet front, 10 feet side, 20 feet rear and 20 feet on a corner in the Residential Zones. Front and corner setbacks measure from whichever line sits farthest out: the front property line, the public street right-of-way line, or a private road easement line.

The code allows 'long established setbacks' to stand instead of the table figures when existing buildings on two or more parcels, with at least one contiguous parcel, already share an alignment, the parcel is not a corner lot, and it sits in a platted subdivision; corner parcels get no such exception. Commercial, Mixed Use and Industrial Zones under § 07-10-21(1)B use a different method: setbacks against an unlike zone are the average of the two zones' requirements, and a parcel surrounded entirely by the same zoning classification has no side or rear setback at all, only a 20-foot front setback.

S. 20/26, 95 feet from SH44 and 90 feet from SH55, unless the highway district with jurisdiction waives the requirement. These distances apply only in unincorporated Canyon County; Caldwell and Nampa each set their own setbacks inside city limits.