Idaho Falls, ID Building Setbacks & Zoning: Structure Height Limits (2026)

Maximum building height in Idaho Falls residential zones is set by Comprehensive Zoning Section 11-3-4 and Table 11-3-1, which lists a maximum building height of twenty-four feet (24') for the residential zones shown (with TN governed by its supplemental form-based standards). Roofs above the square of the building, chimneys, flagpoles, antennas, church towers, and similar non-occupied features are excluded when calculating building height (Section 11-3-2(C)). Accessory structures are limited under Table 11-3-3 to twelve feet (12') in height, but may go up to twenty-four feet (24') if they meet the same setbacks as primary buildings; any accessory structure over twelve feet must meet primary-building setbacks (Section 11-3-4(D)(1)).

Public, school, and religious-institution buildings may exceed the zone height if set back an extra one foot for each additional foot of height above the limit (Section 11-3-4(C)(1)). Where a taller multi-unit or commercial building adjoins low-density residential (RE, RP, R1, R2, TN) land and exceeds twenty-four feet, every additional foot of height requires two additional feet of setback, with a minimum 30-foot setback (Section 11-3-4(B)(4)). Commercial and industrial zones carry their own, higher height standards in Chapter 3. Confirm the exact height limit for your zone and project type with the Building Division.