$589 Million Changed Hands in Miami County Last Year.
Vol. III, No. 278 - Here is What That Means For You
Nearly six hundred million dollars in residential real estate was sold in Miami County between March 2025 and February 2026. That’s 1,924 valid residential sales — homes, not commercial buildings, not farmland — recorded by the Miami County Auditor’s Office over twelve months, across every corner of this county.
Most residents never saw it coming — and if these trends continue, residents certainly will on their upcoming tax bills after the next tri-annual review in 2028.
This publication pulled the data, cleaned it, and mapped it by school district. What it shows is worth your attention — especially if you own a home, pay property taxes, or care about where this county is headed.
The Market Is Bigger Than You Think
Miami County’s government spends about $51 million a year running everything it does for 110,000 residents. Last year, residential real estate alone moved nearly twelve times that — $589 million, largely under the radar of public conversation.
The busiest month was June 2025, when 175 sales totaling $99.4 million closed across the county. That single month represented nearly one in six dollars of the entire year’s volume. Summer dominated — June through August drove the bulk of activity — with August recording the highest single-month transaction count at 214 sales.
By winter, February 2026 was still posting 131 sales and $33 million in volume. This is not a cooling market. It is an active, sustained market that has not paused.
Where the Action Is
The Troy City School District — covering not just the city of Troy but significant portions the remaining parts of Concord Township and other areas — recorded 630 valid residential sales totaling $258 million. That’s 44 cents of every residential real estate dollar that moved in this county last year. The median sale price: $294,500.
The Bethel Local School District, covering Bethel Township and the fast-growing corridors south and east of Tipp City, posted the highest median sale price in the county at $322,500 across 302 transactions. If you’ve driven State Route 202 or U. S. Route 40 lately and wondered who is buying all those new houses — the answer is a lot of people, at prices that would have been unthinkable here ten years ago.
Piqua City School District recorded the second-highest transaction count at 397 sales, but at a median of $179,900, it is serving a very different buyer than Bethel or Troy. Both markets matter. They tell different stories about access, affordability, and demand in the same county.
The Gap Between What Sold and What the Auditor Says It’s Worth
First, a quick primer on how this works — because most homeowners don’t think about it until the tax bill arrives.
County auditors in Ohio are legally required to appraise property at true market value. But they can only do so on a fixed schedule: a full reappraisal every six years, with a mid-cycle update — called a triennial review — in between. Miami County completed its full sexennial reappraisal last year. Residential values rose an average of 30 to 40 percent. For many homeowners, that was a jarring number to absorb.
Here’s what makes it more complicated: even after that reappraisal, the market kept running ahead of the new values.
Nationally, assessed values average around 80 to 85 percent of actual market value — meaning the sale price almost always exceeds what a government appraiser says a home is worth. That gap exists because markets move daily while assessors work on fixed cycles. In a rising market, the sale price perpetually outruns the frozen assessed value. The auditor is always, to some degree, looking in the rearview mirror.
In Miami County, that rearview mirror is showing a wide gap.
Across every school district, the median home sold for more than its freshly updated auditor-appraised value. Countywide, the median sale-to-appraised ratio was 1.25 — meaning the typical home sold for 25 percent above what the auditor currently says it’s worth. In a normal market, a gap like that would be unremarkable. What makes it notable here is that it persists after a 30 to 40 percent reappraisal adjustment. Most homeowners assumed last year’s increase brought values in line with reality. The sales data from the last year suggests it didn’t fully close the gap.
That matters because our next triennial review is scheduled for 2028. Current appraised values are essentially frozen until then. When 2028 arrives, the auditor will use sales data from the intervening years — including every transaction in this analysis — to determine where values need to be adjusted again.
If the market keeps selling at 25 percent above appraised value through 2027, that adjustment will not be a surprise. It will be a reckoning.
This is not an alarm. It is information — exactly the kind residents deserve to have before it shows up as a line item on their tax statement. If you want to see where your property’s current appraised value stands, the Miami County Auditor’s property search is public and free at auditor.miamicountyohio.gov.
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