Foothills County Planning and Development (Development Authority)
Section 4.2.1.7 and Table 4.2.1.7A: a detached building accessory to a dwelling needs no development permit if accessory buildings are a permitted use in the district and the property stays within the table's building count and cumulative area for its parcel size (for example four buildings and 3,075 sq ft on 3 to 4.99 acres, five buildings and 4,100 sq ft on 10 to 14.99 acres). The exemption does not apply on Sub-district "A" or Direct Control land, in the Flood Hazard Protection Overlay, or to a relocated building. Section 9.2.2 makes an accessory building over these limits a discretionary use that needs a development permit.
Source: Foothills County Land Use Bylaw 60/2014, Office Consolidation (Updated September 8, 2026)