Can you build a PSL Modular unit in Utah?

An internal one, yes. HB 82 (codified at Utah Code 10-9a-530) makes internal accessory dwelling units a permitted use by right in most residential zones, meaning a city can't require a discretionary hearing or conditional-use permit for a qualifying basement or within-footprint unit. Cities retain some control — one extra parking space, garage-parking replacement, and a cap excluding internal ADUs from up to roughly a quarter of single-family land. Detached ADUs are still governed locally.

Utah's Division of Facilities Construction and Management (DFCM) runs the State Modular Building Program under Title 15A (the Factory Built Housing and Modular Units Administration Act). An approved third-party inspection agency attaches a certification decal to each module indicating it meets or exceeds the applicable building code. With the decal, your local jurisdiction permits the site work — foundation, utilities, zoning — without re-reviewing the structure.

Not under the by-right rule. Internal ADUs under HB 82 are defined as rentals of 30 days or more, which excludes nightly/short-term rentals. If you want to operate an STR, that's a separate, locally-governed question — common in resort areas like Park City and Moab, but with their own licensing. Check the local STR ordinance.

Snow and seismic. The Wasatch — Park City and the Cottonwood canyons especially — carries extreme ground-snow loads. And the Wasatch Fault runs along the populated Wasatch Front (Salt Lake, Provo, Ogden), one of the more significant seismic risks in the interior West, so seismic design is important. Southern Utah (St. George) is hotter and drier with lower snow. PSL Modular sets the spec from your site.

Yes. Resort areas face acute workforce-housing shortages and short build seasons; modular units are built indoors and set quickly, and multi-unit orders run in parallel with site prep. Engineer for the heavy snow and seismic of the high Wasatch.