Planning a steel garage, shop or barn in Logan, North Logan, Hyrum, Smithfield, Nibley, Providence, Wellsville or Richmond? Here's exactly how outbuildings get permitted and engineered in Cache County. Including the snow loads that catch under-built kits.
| Code criteria (Logan / Cache County) | Value | What it means for your build |
|---|---|---|
| Building-permit threshold | 200 sq ft (IRC) | Sheds under 200 sq ft may skip a building permit; garages & shops always need one. |
| Ground snow load | 43 psf (Logan); 35+ valley, 100+ canyon | The highest valley load in our service area. Vertical roofs & heavier purlins matter. |
| Design wind speed | ~90–98 mph (3-sec gust) | Standard Wasatch-area wind; not a special wind region. |
| Seismic design category | D / D1 | On the Wasatch Fault. Engineered anchorage required. |
| Frost / footing depth | 30″ residential · 36″ commercial | Foundation must bear below frost line. |
| Adopted codes | 2021 I-codes · 2020 NEC | Statewide since July 1, 2023. |
Snow load is elevation-driven. Confirm your exact site value at the USU Utah Snow Load study and verify all figures with your city's building department.
Cache County and its cities follow the 2021 International Residential Code, which exempts a detached accessory building of 200 square feet or less from a building permit. That exemption is narrower than it sounds:
Logan City building staff put it simply: get a permit for everything except new paint and floor covering. When in doubt, call before you pour.
Cache Valley sits in the heaviest-snow corner of the Wasatch Front. Logan's design ground snow load is 43 psf. And bench, canyon and mountain properties (Providence Canyon, Green Canyon, the Sinks) climb well past 100 psf. This is exactly where cheap, generic steel kits fail: they're engineered for a national average, not a Cache Valley winter.
Every Royalty Metal building is engineered to your address-specific snow load, with vertical-panel roofs and the purlin spacing the load actually requires. That engineering is what your inspector stamps. And what keeps your roof up in February.
Setbacks are set by your zoning district, and each Cache Valley city publishes its own. In residential zones, accessory buildings generally must sit out of the front yard and a few feet off the side and rear property lines, with larger buildings allowed in agricultural zones. Because the exact side/rear distances vary by city and zone, we confirm your specific setbacks with your jurisdiction before finalizing your site plan.
Yes. A detached metal garage has a foundation, structural framing and typically electrical, so it requires a building permit in Logan and throughout Cache County, regardless of size.
Logan's valley design value is 43 psf, but your exact requirement depends on elevation. Bench and canyon sites run much higher. We pull your address-specific value from the USU Utah Snow Load study and engineer to it.
Minimum 30 inches for residential foundations (36 inches for commercial in Cache County) so the footing bears below the frost line.
Yes. Every building ships with PE-stamped engineering drawings prepared for your jurisdiction and loads. That's what your building department reviews and approves.
Get instant pricing on a steel building engineered to your exact Logan-area snow load.