What are the tiny house laws in Wyoming?

Crook County, Johnson County and Weston County have no county zoning restriction on tiny-home occupancy¹. In Converse County, Washakie County and Goshen County, tiny homes also face no county zoning restriction¹. These Wyoming counties give you places to start your land search, without guaranteeing that every tiny-house design meets every requirement¹.

In Laramie County, you can live in a tiny home on wheels with a permit in the RR, RRH, RRL and LU zoning districts¹. In Sublette County, the tiny-home rule covers short-term rentals, which need a short-term-rental permit¹. Sublette’s rental rule does not give you confirmed permission to live there full time¹. Use the Wyoming tiny-home county list to narrow your search, then ask about your intended use¹.

You can live in a tiny home on wheels in Laramie County’s named rural zoning districts under its specific rule¹. Ask Laramie County Planning and Development which permit your proposed home needs. Bring the parcel location, trailer specifications and how long you plan to live there.

Wyoming’s RV rules differ from its tiny-home rules⁵. Of 13 counties with confirmed RV rules, 5 allow occupancy within the stated scope⁵. Temporary-only rules apply in 4 counties, limited use in 3, and a prohibition with an exception in 1⁵. Some Wyoming rules cover campgrounds or housing during construction, rather than permanent living on private land⁵. Ask the planning office whether it treats your trailer as an RV or a dwelling. Check the Wyoming RV-living county list if the office classifies your home as an RV⁵.

Wyoming adopted the 2024 International Building Code through the Department of Fire Prevention and Electrical Safety⁶. State Fire Marshal plan review covers specific categories, including government buildings, certain public buildings and listed public uses⁶. Wyoming’s code adoption does not give you tiny-home occupancy approval or set a minimum floor area for your parcel⁶. Ask the department’s plan-review office whether your project needs state review⁶.

We could not confirm a Wyoming minimum dwelling size that applies statewide. Ask your local building and planning offices about minimum floor area, the applicable residential code and any tiny-house appendix. Nine Wyoming counties need no residential building permit in unincorporated areas³. Check the building-permit county list for permit requirements, then confirm occupancy permission separately³.

You need a Wyoming septic permit to install, repair or replace a small wastewater system, including a septic tank and leach field². The office responsible depends on your jurisdiction⁷. Ask DEQ’s Water and Wastewater Section which office handles your location⁷. Before ordering your home, ask that office about your proposed occupancy, water supply and wastewater design.

In DEQ jurisdictions, the small-system general permit covers systems treating less than 2,000 gallons of domestic sewage per day⁷. Submit your application and leachfield design sheets to the applicable District Engineer². Wait for authorization before you begin septic construction⁷. A composting toilet can also need a permit in Wyoming, so ask DEQ whether that option needs sanitation approval².

You need State Engineer approval before drilling a Wyoming domestic well⁴. The domestic application filing fee is $50, and a Wyoming-licensed contractor must drill your well⁴. If you plan a private well, contact the State Engineer’s Ground Water Division before arranging drilling⁴. Ask for a current fee schedule for your well application and each local approval.

Confirm occupancy, building and wastewater approval separately: county land-use permission does not remove Wyoming’s septic-permit requirement^1,2. Give the planning office a written description of your foundation or chassis, floor area and intended year-round use. Ask whether approval changes if your tiny home becomes an accessory dwelling or a rental. Ask for the applicable ordinance and a written answer tied to your parcel.