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

Bannock County Code Section 17.12.060 publishes a building bulk and placement table for the Agricultural (A) district that fixes minimum setbacks by road type and lot line. A single-family residence needs 30 feet from a local road right-of-way, 50 feet from an arterial or collector road right-of-way, 30 feet from the rear yard line, and 20 feet from the side yard line. Residential accessory structures and accessory structures for commercial agriculture share the same 30-foot local road and 50-foot arterial setback but only need 15 feet on the rear and 20 feet on the side.

Accessory structures built for commercial agriculture farm animals, such as barns or confinement buildings, must clear 100 feet on every side: local road, arterial road, rear yard and side yard alike. A footnote to the table adds a stricter rule that overrides all of the above near water: every structure in the A district must sit at least 100 feet from any stream or riparian area, with an exception only for approved culverts that meet Bannock County Planning and Development Services standards and the requirements of any other agency with jurisdiction.

Minimum lot size in the A district is one acre, with density limited to one dwelling per 40 acres under Section 17.12.050, and conditional uses in the district have their setbacks determined case by case by the Planning and Development Council rather than by the fixed table. The health department can also require larger lot sizes than the zoning minimum where septic or water supply conditions call for it.