What Are Michigan Impact Fees?
Michigan courts have held that municipalities lack authority to impose true impact fees without enabling legislation, so growth costs are collected as water and sewer connection, tap-in, and capacity charges under Act 94 utility powers, plus subdivision improvements and negotiated mitigation.
Utility buy-in charges in Oakland, Macomb, and Kent County growth townships are the main one-time line items. Michigan figures on impactfees.org are model estimates calibrated to community size — confirm township and utility authority schedules directly.
Michigan figures are illustrative estimates from our statewide cost model — calibrated to local construction costs and community size — rather than verified fee schedules. Use them for early budgeting and site comparison, and see our methodology for how estimates are built.
Counties Covered
Our calculator covers all 83 Michigan counties:
Click any county to open the calculator pre-loaded with that jurisdiction.
Major Michigan Markets
Click any market to open the calculator pre-loaded with that city.
Detroit / Wayne, Oakland & Macomb
GLWA-linked connection charges vary widely across suburban systems.
Grand Rapids / Kent & Ottawa
West Michigan growth townships levy notable water and sewer fees.
Ann Arbor / Washtenaw
High demand pairs with utility improvement charges and mitigation.
Lansing / Ingham & Eaton
Utility connection charges lead capital-area development costs.
How the Calculator Works
- Pick your development type — Single-family, multifamily, commercial, industrial, or office.
- Search or pin your site — Enter an address or drop a pin anywhere in Michigan.
- We identify the jurisdiction — City, county, and state are resolved automatically.
- Get an instant breakdown — Water, sewer, road, park, school, and fire fees by category — verified where researched, clearly-labeled estimates where not.