Why does a low-volume market break the math?
A median is the middle number in a sorted list. It's a good measure when the list is long and a poor one when it's short.
Nashua records enough monthly transactions that one unusual sale barely moves the median. A town of a few thousand people recording three or four sales in a month has no such buffer. If one of those four is a small camp, a family transfer, or a distressed property, the median swings by six figures and the tracker reports it as a market movement.
Coös County recorded 27 home sales in March 2026 across the whole county. Spread that across fifteen municipalities and most towns are contributing one sale, or none. Any town-level statistic built on that is describing individual transactions rather than a market.
How badly do the sources disagree?
Jefferson is the clearest illustration. Three trackers, three very different pictures of one town of roughly a thousand people:
| Source | Figure | Reported change |
|---|---|---|
| Zillow | Average home value $358,899 | Up 3.4% year over year |
| Movoto | Median list price $499,000, September 2026 | Down 39% from the prior month |
| RealtyTrac | Median listing price $592,450, the highest in Coös County | Not stated |
At the county level the picture is only slightly better. Redfin put Coös County's median sale at $240,000 in March 2026, up 9.1% year over year, at $164 per square foot. Zillow put the average home value at $251,611, down 0.9%. RealtyTrac reported a median home price of $256,391 alongside a median residential value of $191,267.
Those aren't small differences. They point in opposite directions on whether the market is rising or falling.
Want to know what a specific North Country property is actually worth? I'll pull the real closed sales and show the adjustments. Two business days, no obligation.
What else is different about this market?
Time. Coös County homes averaged 104 days on market in March 2026, against 109 days the prior year. Homes with a view across the county sat a median of 95 days. One Whitefield property in the recent record took 533 days to sell.
Nashua runs somewhere between 13 and 36 days depending on the source. That's a fundamentally different rhythm, and it matters in two directions.
For sellers, an expectation set by southern New Hampshire timelines will be badly wrong. A property that would move in three weeks in Merrimack can sit for a season here, and that isn't necessarily a signal that anything is wrong with it.
For buyers, longer market times mean more room to inspect, compare, and negotiate than anywhere in the southern part of the state.
So how do you actually value a house up here?
The same way you should anywhere, with more work and a wider net.
Widen the geography. If a town has three comparable sales a year, you look at neighboring towns and adjust for the difference. Lancaster, Whitefield, Jefferson, Dalton, Carroll, and Littleton function as one loose market for comparison purposes even though they're separate municipalities.
Widen the time window. Six months of sales may give you nothing. Twelve or eighteen months, adjusted for market movement, gives you something to work with.
Adjust harder. Properties up here vary enormously. A 1988 house on 5.59 acres and a village home on a quarter acre are not comparable without substantial adjustment, and in a thin market you rarely get the luxury of a close match.
Read the individual sales. In a market this size, you can look at every relevant transaction rather than working from a summary statistic. That's a genuine advantage, and it's why the summary statistics are so misleading. The underlying data is small enough to read directly.
Check what didn't sell. Expired and withdrawn listings matter more here than in a fast market. A property that sat 400 days at $450,000 and withdrew tells you something specific about the ceiling.
What does this mean if I own property up there?
Two practical things.
If you're thinking about selling, an online estimate is close to meaningless for your address. Get actual comparable sales looked at, and expect the analysis to reach further geographically and further back in time than it would in Nashua.
If you're watching an estimate move and drawing conclusions from it, stop. A 77.7% reported decline in a town's median is a statistical artifact, and so is the recovery that will follow it next quarter.
