A Conditional Use Permit (PDF) is required for all new multi-family, planned unit developments, and commercial or industrial development. The Planning Office will then route the submitted form(s) to the internal permitting departments for comment and instructions to follow up if necessary with the County Sanitarian, Floodplain Administrator in Environmental Health, GIS/ Rural Addressing, and Road and Bridge Department. Please contact the State Building Code Bureau for all other building questions (electrical, plumbing, snow loads, etc.) at 406-841-2056.