Michigan

Buying Land in Washtenaw County, Michigan

County seat and largest city Ann Arbor, home to the University of Michigan. This page is honest about the mix: a significant urban/college-town core alongside real rural land in the county's western and southern townships, with a distinctive point-of-sale septic inspection requirement and a well-funded farmland-preservation program shaping what's available and how it's protected.

A Genuine Urban Core and Genuine Rural Townships -- Know Which You're Looking At

Case-by-case / verify locally

Ann Arbor and Ypsilanti anchor a significant urban/college-town core, but Washtenaw County's western and southern townships (Sylvan, Freedom, Bridgewater, Lima, and others) have real rural and agricultural land. Confirm which part of the county a parcel sits in before assuming either narrative.

Time of Sale (TOS) Septic and Well Inspection Required Before a Sale

Case-by-case / verify locally

The Washtenaw County Health Department requires an onsite well and septic inspection before a home served by those systems can be sold. Inspection results are valid 12 months; sewage permits run up to two years (six months for TOS-triggered replacements). Factor this into your timeline if you're buying an existing home on septic here.

A Well-Funded, Well-Documented Farmland Preservation Program

Generally favorable

The City of Ann Arbor's Greenbelt program has purchased development rights on roughly 7,600 acres of farmland and open space across eight townships since a 2003 voter-approved millage. See our dedicated conservation-easements standalone for what a Greenbelt-protected parcel means for a buyer.

Not one county, but two: Ann Arbor's urban core and genuinely rural townships

Washtenaw County's identity as the home of Ann Arbor and the University of Michigan is real, and the eastern and central part of the county -- Ann Arbor itself, Ypsilanti, and the built-up townships around them -- functions as a genuine urban/suburban market with correspondingly little raw or rural land. But that's only part of the picture: the county's western and southern townships (places like Sylvan, Freedom, Bridgewater, Lima, Dexter, and Northfield Townships) have real agricultural and rural land, and this page treats that honestly rather than forcing either a college-town narrative or a generic rural-county narrative onto the whole county. If you're evaluating land here for a rural or semi-rural use, identify a specific candidate township early -- the difference between land near Ann Arbor and land in the county's western townships is substantial.

Zoning: townships administer their own, consistent with Michigan's statewide model

Washtenaw County follows Michigan's township-primary zoning model: individual townships, each with their own planning commission (Superior Township and Sylvan Township are two directly confirmed examples with their own posted planning-commission pages), administer their own zoning ordinances, consult with the county planning commission during that process as Michigan's Planning Enabling Act requires, and handle site plan review, conditional-use approvals, and rezoning requests independently. A University of Michigan Center for Local, State, and Urban Policy (CLOSUP) fact sheet specifically covering Washtenaw County's local zoning practice confirms this township-led structure is how zoning actually plays out here in practice, not just in statute. Before assuming a specific set of rules applies to a Washtenaw County parcel, confirm directly with that township's planning or zoning office.

Septic and wells: a distinctive Time of Sale (TOS) inspection requirement

The Washtenaw County Health Department's Environmental Health Division (705 N. Zeeb Rd., Ann Arbor, MI 48107-8645; (734) 222-3800) administers a distinctive Time of Sale (TOS) Program: any home served by an onsite well and septic system must have both inspected, by an inspector from the county's own certified list, before the property can be sold. Results are valid for 12 months, but a TOS-triggered replacement permit is valid for only six months -- a tighter window worth planning around if an inspection turns up a system that needs replacing. This is worth understanding in more detail than a countywide summary can carry if you're buying an existing home on septic here.

Farmland preservation: the Ann Arbor Greenbelt program

In 2003, Ann Arbor voters approved a 30-year millage funding the city's Greenbelt program, which purchases development rights (PDR) on farmland and open space in and around the city -- reaching well beyond Ann Arbor's own borders into Pittsfield, Scio, Northfield, Salem, Webster, Superior, Lodi, and Ann Arbor Townships. The program reports having protected roughly 7,600 acres of farmland since the millage passed, including specific documented purchases such as the development rights to 286 acres of Webster Township farmland for $2.14 million. If a parcel you're considering already carries a Greenbelt-purchased conservation easement, that materially changes what you can do with it -- see our dedicated conservation-easements standalone for Washtenaw County for what that means in practice.

Records, GIS, and other departments to know

The Washtenaw County Clerk/Register of Deeds (200 N. Main Street, Ann Arbor; (734) 222-6710) maintains recorded deeds, mortgages, and foreclosure records. The Equalization Department sets equalized and taxable values countywide and maintains the legal-description mapping behind the county's parcel data, and the Treasurer's Office (200 N. Main Street, Suite 200; (734) 222-6600) handles the Property/Parcel Lookup tool combining current real-estate and assessment data. GIS mapping covers property lines, municipal boundaries, zoning boundaries, and assessed values.

What we could and couldn't confirm

Washtenaw County's FIPS code was initially returned incorrectly in a general search (26163, which is actually Wayne County's code) and was corrected via a direct, targeted follow-up search confirming 26161 -- flagged here explicitly because it illustrates why every county in this project gets its FIPS code independently verified rather than accepted from a single general search result. The Time of Sale Program's inspection timelines and permit durations are drawn from the county's own program page and AnnArbor.com reporting. The Ann Arbor Greenbelt program's protected-acreage figure (roughly 7,600 acres) and the specific Webster Township acquisition example are drawn from AnnArbor.com and Concentrate Media reporting rather than a raw city dataset, so treat the acreage figure as a reported total that may have grown since. This research pass did not compile a complete township-by-township zoning breakdown for the entire county; Superior and Sylvan Townships are directly confirmed as self-zoned examples. Direct WebFetch to washtenaw.org and a2gov.org was not attempted in this pass.

Verify directly with: the specific township for zoning jurisdiction on a given parcel, the Washtenaw County Health Department's Environmental Health Division for Time of Sale inspection scheduling and septic/well permitting, and the City of Ann Arbor's Greenbelt program office for whether a specific parcel already carries a Greenbelt conservation easement

Who to Call Before Buying Land in Washtenaw County

Direct WebFetch access to washtenaw.org and a2gov.org was not attempted in this research pass, so several details reflect search-indexed content rather than a full verbatim read -- confirm current staff, hours, and fees directly, and confirm zoning jurisdiction for a specific parcel with the relevant township before relying on this page.

Planning & Zoning

Washtenaw County (varies by township)

Zoning is administered by the specific township -- confirm directly with the township planning commission for a given parcel.

Official website →

Building & Permitting

Washtenaw County (varies by city/township)

Building permits -- confirm with the specific city or township, since most administer their own.

Official website →

Environmental Health

Washtenaw County Health Department -- Environmental Health Division

General environmental health questions, including the Time of Sale (TOS) Program.

Phone: (734) 222-3800Official website →

Septic / Onsite Wastewater

Washtenaw County Health Department -- Time of Sale Program

Well and septic inspections required before a home sale; septic permits and inspections generally.

Phone: (734) 222-3800Official website →

GIS / Parcel Records

Washtenaw County GIS

Parcel boundaries, zoning boundaries, and assessed-value mapping.

Official website →

Assessor / Property Tax

Washtenaw County Equalization Department / Treasurer

Property valuation, equalized/taxable values, and parcel lookup.

Phone: (734) 222-6600Official website →

Recorder / Clerk / Land Records

Washtenaw County Clerk / Register of Deeds

Recorded deeds, easements (including Greenbelt conservation easements), and plats for a specific parcel.

Phone: (734) 222-6710Official website →

Want to know if this specific parcel actually works?

Tell us what you're looking at and we'll connect you with a local land specialist who can help you sanity-check it before you go further.

Get local guidance

Topics Specific to Washtenaw County

Conservation Easements in Washtenaw County: The Ann Arbor Greenbelt →Time of Sale: Washtenaw County's Mandatory Septic and Well Inspection →

Sources

Washtenaw County, Michigan — Wikipedia (accessed 2026-09)
Fact Sheet on Resources for Understanding Local Zoning in Michigan -- Washtenaw County — University of Michigan CLOSUP (accessed 2026-09)
Time of Sale Program (TOS) — Washtenaw County, MI (accessed 2026-09)
Time of Sale regulations meant to protect homebuyers — AnnArbor.com (accessed 2026-09)
Ann Arbor's Greenbelt Program making strides on preserving open space — AnnArbor.com (accessed 2026-09)
The Ann Arbor Greenbelt, Then and Now — Concentrate Media (accessed 2026-09)
Partners — City of Ann Arbor (accessed 2026-09)
Register of Deeds — Washtenaw County, MI (accessed 2026-09)

Last reviewed 2026-09