Washtenaw County Zoning Map & Districts 2026

The official Washtenaw County zoning map is maintained by the local planning department. You can access the interactive GIS map at https://www.washtenaw.org/mapwashtenaw. ZoneWire also tracks rezoning activity discussed in council meetings.

Washtenaw County does not administer a conventional zoning ordinance of its own — land-use rules here are set at the municipal level (or, as in Houston, through subdivision codes and deed restrictions). ZoneWire tracks land-use decisions from the public meeting record instead.

ZoneWire reads every council meeting in Washtenaw County to detect rezoning discussions, variances, and zoning amendments. Start a free trial to receive alerts when rezoning activity is detected.

No. Washtenaw County does not have a countywide zoning ordinance. Under Michigan's Zoning Enabling Act (PA 110 of 2006), zoning is adopted and enforced by individual townships, cities, and villages. Rezonings, variances, and site plans are decided by the relevant municipal body, not the county.

The municipality where the property sits. For example, land inside the City of Ann Arbor is zoned by the Ann Arbor City Planning Commission and City Council, while property in a township is handled by that township's planning commission and board of trustees. The county does not vote on local rezonings.

The county's role is coordination and support rather than regulation. The Board of Commissioners adopted an advisory countywide Comprehensive Plan (2004), and the county provides community planning resources, maintains township/city zoning ordinances and maps on file, and offers parcel and GIS data. It does not set zoning for any parcel.

Use MapWashtenaw, the county's public GIS viewer, at washtenaw.org/mapwashtenaw. It shows parcel boundaries, assessment data, aerial imagery, and reference planning layers. The county cautions it is for reference only; confirm the controlling zoning with the local municipality.

The county's Building Inspection / Plan Review division enforces state building codes, soil-erosion and sedimentation control, and related construction standards for jurisdictions that use county inspection services. This is building-code enforcement and is separate from zoning approval, which remains a municipal function.

Yes. ZoneWire Free sends New Meeting Alerts for Washtenaw County at no cost, with the agenda for each meeting. ZoneWire Pro adds full transcripts, zoning and development analysis, and keyword alerts for $129 per market per month.