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Roof snow and wind loads and permits in Cassia and Minidoka counties

Roof work in the Mini-Cassia area has to match Idaho’s adopted codes and the local building official’s requirements. This guide points to the official sources for wind and snow design loads and explains which office handles permits on each side of the Snake River.

What Idaho says about wind and snow loads

Idaho’s Division of Occupational and Professional Licenses (DOPL) publishes building-code FAQs for designers and owners. On design loads, DOPL states that wind loads are to be per the International Building Code (IBC) basic wind speed of 90 mph, 3-second gust, and that the value may be higher in special regions along the Montana border. Mini-Cassia is not that Montana-border special region, but the address-specific number still comes from the code maps and the local official—not from a contractor brochure.

For snow, DOPL says snow loads are to be as per the IBC and points readers to ATC Hazards by Location for site data. DOPL does not publish a single Cassia or Minidoka ground-snow number on that FAQ page. If a plan reviewer or engineer asks for a load, use the ATC tool and confirm with the building department that has jurisdiction over the property. Do not treat a neighbor’s permit note as your design value.

Idaho’s current adopted code package is listed in DOPL’s adopted-codes document (including the 2018 IBC/IRC with Idaho amendments). Local departments may note which editions they enforce; Minidoka County’s Building and Zoning page, for example, references 2018 building and residential codes among its adopted set.

Who issues the building permit?

City of Burley. Inside Burley city limits, the City of Burley Building Department handles building permits and inspections. The department’s page lists building, electrical, plumbing, HVAC, and right-of-way permit applications and asks you not to start construction without consulting the Chief Building Official. The office is at 2020 Parke Avenue, Burley; phone 208-647-7086.

Cassia County (outside Burley). For unincorporated Cassia County and other Cassia cities that use the county process, Cassia County Zoning and Building publishes online applications, including building permits. Confirm whether your parcel sits in the city or the county before you apply.

Minidoka County, including Paul and Rupert. Minidoka County Building and Zoning serves as the building department for Minidoka County and the cities of Acequia, Minidoka, Paul, and Rupert. Applications can go through the county’s online portal; the department is at 715 G Street (P.O. Box 368), Rupert; phone 208-436-7183. That is the office Paul and Rupert property owners deal with for building permits, separate from Burley’s city desk.

How this affects a roofing project

Repairs that do not change structure are often handled differently from a full re-roof or a new ag building. When a permit is required, the jurisdiction wants plans or a scope that match the adopted code, including the wind and snow criteria that apply to that site. We help you understand what the free inspection found; the building official decides what the permit must show.

Metal roofs that shed snow, ice-and-water shield at eaves, and gutter work that keeps meltwater moving all relate to how Mini-Cassia winters load a roof, but they do not replace the official load value. Use the DOPL FAQ and ATC tool for design numbers, and call Burley, Cassia County, or Minidoka County for the permit path that matches your address.

Sources

Updated 2026-11-03

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