Permits are primarily handled at the municipal level for incorporated cities and townships, while the county provides oversight for unincorporated areas and specific environmental reviews. The Ingham County Drain Commissioner maintains jurisdiction over storm water and drainage permits for developments across the county regardless of municipal boundaries.
How this fits with the state
The state authority here is Michigan Department of Licensing and Regulatory Affairs. The county file does not replace that — it adds the permit office, local overlays, and the actual filing path.