Building Setbacks & Zoning in Canyon County, ID (2026)
3 rules for unincorporated Canyon County, Idaho.
Verified from official government sources
Setback Rules
Unincorporated Canyon County, Idaho sets yard setbacks by zone in Canyon County Code § 07-10-21(1): the Agricultural Zone A requires 30-foot front, 10-foot side, 20-foot rear and 30-foot corner setbacks, while Residential Zones R-R, R-1 and R-2 require 20 feet front, 10 feet side, 20 feet rear and 20 feet corner. Buildings near major roads face extra arterial-preservation setbacks on top of these.
Canyon County Yard Setback Minimums
Some RestrictionsCanyon County Code § 07-10-21(1)
Front Side Rear Corner Agricultural Zone A 30' 10' 20' 30' Residential Zones R-R, R-1, and R-2 20' 10' 20' 20' ... (A) No building or structure shall be erected nearer than fifty feet (50') from the centerline of any major collector shown on the Canyon County functional classification map unless the highway district having jurisdiction...
Structure Height Limits
Unincorporated Canyon County, Idaho caps residential building height at 35 feet in both the Agricultural Zone A and the Residential Zones R-R, R-1 and R-2, per the Height Regulations table at Canyon County Code § 07-10-21(3). Commercial and Industrial Zones run higher, 50 and 75 feet, but those columns cover commercial/industrial structures, not residential use.
Canyon County Residential Height Limit
Some RestrictionsCanyon County Code § 07-10-21(3)
Residential Accessory Structure Commercial/ Industrial Structures Agricultural Zone A 35' 35' Not applicable Residential Zones R- 35' 35' Not applicable R, R-1, and R-2 ... Church steeples or spires No limit All zones except M-2
Lot Coverage Limits
Unincorporated Canyon County, Idaho imposes no impervious-surface coverage limit at all in its Agricultural and Residential (R-R, R-1, R-2) zones, but Canyon County Code § 07-10-15 caps commercial and industrial lots at 85% impervious coverage. The rule sits inside the Canyon County Zoning Ordinance and does not reach parcels inside Caldwell, Nampa or the county's other incorporated cities.
Canyon County Lot Coverage Limit
Some RestrictionsCanyon County Code § 07-10-15
07-10-15: PROPERTY BOUNDARY COVERAGE: In residential and agricultural zones, there are no county regulations regarding the maximum area of a lot which shall be occupied by impervious surface. In commercial and industrial zones, the area of a lot occupied by impervious surface shall not exceed eighty five percent (85%) of the total area of the lot.
All Canyon County ordinances
See every category we cover for Canyon County: parking, noise, fences, fires, animals, pools, and more.
Canyon County Ordinance Hub →