Run the math on two identical offers, both around $400,000, one in Ann Arbor and one in Saline. Most buyers assume the tax bill scales with the sticker price. It doesn't scale the way you'd expect, and the town with the higher official tax rate isn't always the one that writes the bigger check every winter.

That's the part of Washtenaw County's market that a median price can't show you. And it's the part that actually determines what your money buys once you get past the number on the listing sheet.

The Number Everyone Already Has

Over the three months ending in May 2026, homes across Washtenaw County sold for a median price of $435,000, up 4.7% from the same period a year earlier. The median price per square foot came in at $243, up 5.7% year over year, and homes were taking about 35 days to sell, roughly in line with the pace a year prior.

Those figures tell you the county is competitive and still appreciating. They tell you almost nothing about which town gets you more house for the money once carrying costs are on the table, and they say nothing at all about why two towns with nearly identical price tags can produce very different monthly payments.

Ann Arbor Isn't One Tax Market, It's Several

Buyers tend to treat "Ann Arbor" as a single price point. The city's own tax data says otherwise. Depending on which school district and assessment lines a parcel falls inside, the effective property tax rate on an Ann Arbor home ranges from about 1.49% in the 48108 ZIP code to roughly 1.71% in 48104, a spread of 0.22 percentage points within the same city limits. On a home valued near the city's median of $480,800, that spread is the difference between a tax bill in the low $7,000s and one pushing past $8,000, before any comparison to a neighboring town.

The reason isn't city government. It's overlapping school and special assessment districts that don't line up neatly with city boundaries. Two houses three blocks apart can sit in different taxing footprints and carry meaningfully different bills for the rest of the time you own the home.

Where the Tax Dollar Actually Goes

Here's the part that surprises most Ann Arbor buyers: the City of Ann Arbor itself only controls a small slice of that bill. The city, which handles roads, police, fire, and parks, receives roughly a quarter of every property tax dollar collected. The rest is split across Ann Arbor Public Schools, Washtenaw Community College, and the Washtenaw Intermediate School District, all of which set their own voter-approved millage rates independent of city council. The City of Ann Arbor's assessing office is explicit that the city doesn't determine tax rates for these other units, only its own.

That matters for how you read a high tax bill. A homeowner frustrated with city services and a high tax bill is often aiming their complaint at the entity with the least control over the number. The rest of that bill was set at the ballot box, by different governing bodies, for different purposes.

The Ypsilanti Paradox

This is where the county's numbers stop behaving the way you'd expect. Ypsilanti's city millage rate is actually higher than Ann Arbor's on paper. Yet the typical Ypsilanti homeowner pays less in absolute dollars, because taxable values in Ypsilanti are lower to begin with. A higher rate applied to a smaller base still produces a smaller check.

The City of Ypsilanti's own millage breakdown shows how many separate levies stack into that rate: county mental health and public safety millages, a road millage voted in 2016, a Washtenaw Community College operating millage, transit funding for the AAATA bus system, and district-specific development authority millages for Depot Town and West Cross. None of those move because a house is worth more or less. They're flat obligations layered on top of whatever the home is worth.

Ypsilanti's median home price sits around $261,800, well under Ann Arbor's $480,800, with an effective tax rate ranging from about 1.43% to 1.53% depending on ZIP code, a narrower internal spread than Ann Arbor's but still enough to matter if you're comparing two specific addresses rather than two city averages.

What the County Median Hides

Zoom out to the countywide numbers and the same pattern repeats at a bigger scale. Washtenaw County's median effective property tax rate is about 1.44%, well above the state's typical range, and the median annual tax bill lands around $5,801. But that median sits in the middle of a wide spread: the 25th percentile bill is about $3,812, while the 75th percentile climbs to $8,536 and the 90th percentile reaches $12,168. Two homeowners paying the county median in taxes could be living in very different houses in very different towns.

None of this means Ann Arbor is overpriced or Ypsilanti is underrated. It means the "Ann Arbor premium" buyers talk about isn't really one number. Part of it is home value, part of it is proximity to the University of Michigan and the job market that surrounds it, and part of it is simply which side of a school district line a parcel happens to sit on.

What This Costs You at the Offer Stage

The practical version of all this shows up before closing, not after. Living inside Ann Arbor's city limits, at a comparable taxable value, typically runs $1,000 to $1,400 more per year in property taxes than an equivalent home in Saline, Dexter, or Ann Arbor Township. Stretched across a decade of ownership, that gap adds up to somewhere between $10,000 and $14,000.

The real-world version is a little different, because Michigan resets a home's taxable value to something close to its sale price the year after a purchase. A family comparing a $400,000 home in Ann Arbor to a $400,000 home in Saline is looking at roughly $2,000 more per year in Ann Arbor taxes once that reset happens, not the smaller same-taxable-value comparison above. That $2,000 a year is real money against a mortgage qualification, and it's exactly the kind of number that doesn't show up on a listing sheet or a home search filter.

The Commute Doesn't Change Much, So the Tax Line Does

One variable buyers often expect to explain the price gap is commute time, and it mostly doesn't. Ann Arbor to Detroit runs about 40 to 50 minutes via I-94 regardless of which side of the county you're coming from, since Ypsilanti, Saline, and Dexter all sit along the same general corridor. If commute time isn't the thing separating these towns, the tax structure and school district lines are doing more of that work than most buyers assume when they're comparing listings side by side.

A Few Questions Worth Settling Before You Write an Offer

Why does Ypsilanti have a higher millage rate but a lower tax bill? Millage rates are applied to taxable value, and Ypsilanti's taxable values run lower than Ann Arbor's. A higher rate on a smaller number still lands as a smaller check.

Does the ZIP code effect inside Ann Arbor show up elsewhere in the county? Ypsilanti shows a similar but narrower pattern, with effective rates ranging from about 1.43% to 1.53% depending on ZIP code. Any town with overlapping school districts can produce the same kind of internal spread.

When are Washtenaw County property tax bills due? Summer bills are typically due by mid-July and winter bills by mid-December, with the county's Equalization Department responsible for setting equalized and taxable values each year across every local unit.

The county's median price will keep showing up in every search result you run. What it won't show you is which side of a school district line your offer sits on, or whether the town with the lower list price is actually the better carrying-cost decision once you run the full math. That's the comparison worth having before you write an offer, not after you've closed.

If you're weighing Ann Arbor against Ypsilanti, Saline, or Dexter and want the real numbers run on a specific address, The Faeth Team can pull the tax history and comparable sales for the exact parcels you're considering. Get your free home valuation and see what your budget actually buys across Washtenaw County.