tiny house in Utah
The county has had a lot of inquiries about tiny homes, county planner Scott Messel said, which was unexpected because lots in the unincorporated areas of the county are typically quite large.

“We removed the square-footage requirement for single-family dwellings,” Messel said. The previous minimum size was 800 square feet. Home builders must still abide by the county building codes, he said, but that minimum is under 300 square feet.

Tiny houses are allowed in residential zones in the county as long as they are on a foundation and hooked up to utilities.

Tiny homes built to be mobile with an axle and wheels are now classified as park model recreational vehicles and are allowed as a conditional use in recreation grounds and facilities and campground projects. However they are not allowed on residential lots, Messel said.

The revised zoning ordinance, approved by the Washington County Commission Tuesday, amends and clarifies several zoning regulations.

Read more – https://www.stgeorgeutah.com/news/archive/2016/07/21/jla-tiny-house-trend-on-the-move-in-southern-utah/