Hennepin County is highly urbanized with most land area incorporated into cities that manage their own building permits and zoning. The county government primarily handles permits for unincorporated areas and specific county-managed infrastructure. Geographic overlays such as the Mississippi River Corridor Critical Area and various watershed district regulations add additional review requirements for projects near water bodies.
How this fits with the state
The state authority here is Minnesota Department of Labor and Industry. The county file does not replace that — it adds the permit office, local overlays, and the actual filing path.