Accessory Structures in Teton County, WY (2026)

ADU Rules

Teton County, Wyoming - the home jurisdiction of Jackson Hole, Grand Teton National Park, and the southern gateway to Yellowstone - regulates accessory dwellings as 'Accessory Residential Units' (ARUs) under Section 6.1.11.B of the Teton County Land Development Regulations (LDRs). Only one ARU is permitted per principal dwelling, gross floor area is capped at 1,000 sq ft when accessory to a residential use (850 sq ft when accessory to a non-residential use), the minimum rental term is 90 days, and occupancy is limited to persons employed in Teton County or the property owner's family/non-paying guests. ARUs created on or after June 4, 2018 are deed-restricted as 'Workforce Rental' housing and must be registered and annually requalified with the Jackson/Teton County Housing Department. Properties inside the Town of Jackson are governed by the separate Town of Jackson Land Development Regulations.