Washtenaw County has no countywide STR occupancy cap. Limits are set by each city or township under the Michigan Zoning Enabling Act and the Single State Construction Code (PA 230 of 1972). Ann Arbor and Pittsfield Township enforce specific STR occupancy formulas tied to bedroom count.
Michigan counties have limited zoning authority over townships and cities, so Washtenaw County does not set an STR-specific occupancy limit. Occupancy in unincorporated/township areas is governed by: (1) the Michigan Residential Code adopted under PA 230 of 1972 (Single State Construction Code Act), which uses International Property Maintenance Code minimums — typically 70 sq ft for the first occupant in a sleeping room and 50 sq ft per additional occupant; (2) local ordinances such as Pittsfield Charter Township's STR rule capping occupancy at two times the number of rentable bedrooms (e.g., 6 guests for a 3-bedroom); (3) Ann Arbor's STR licensing program, which requires posting maximum occupancy in every listing; and (4) septic permit capacity (Washtenaw County Environmental Health) for properties not on municipal sewer.
Local zoning/STR violations: civil infraction fines (typically $100-$500/day, varies by jurisdiction); building/property maintenance violations under PA 230 of 1972 may trigger stop-rental orders. Ann Arbor STR license can be revoked for occupancy violations.
Washtenaw County, MI
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Washtenaw County, MI
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Washtenaw County, MI
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Washtenaw County, MI
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Washtenaw County, MI
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See how Washtenaw County's occupancy limits rules stack up against other locations.
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