ADU Rules in Wyoming (2026)
ADU rules in Wyoming — no statewide ADU law. Regulation is entirely local. Key provisions and city-specific frameworks for accessory dwelling units.
Law Name
Preempts Local Ordinances
No — local rules may be stricter
Has State Law
No — regulation is local
Statewide Preemption Status Unconfirmed
No statewide preemption statute was confirmed for this jurisdiction — regulation is local. Local governments retain full authority to set their own rules.
Local Control Framework
Wyoming does not have a statewide ADU law as of 2026 · Source
ADU regulation is left entirely to local municipalities and counties · Source
Wyoming Statutes Title 15 (Cities and Towns) grants municipalities authority over local zoning · Source
Cheyenne, Casper, Jackson, and Laramie set their own local ADU ordinances · Source
Wyoming has a very strong property rights tradition and many rural areas have no zoning at all · Source
Jackson Hole's extreme housing affordability crisis has driven local interest in ADU provisions but no statewide mandate · Source
Source: Wyoming Local Zoning Authority. Last verified April 5, 2026. View source