Why Zestimates and Tax Assessments Miss the Mark on Lake Winnipesaukee Properties

When sellers in New Hampshire's Lakes Region first sit down with Brie Stephens, they often arrive with a number in mind. Sometimes it comes from their town's tax assessment. Sometimes it's a Zestimate they pulled up on their phone that morning. And more often than not, that number and the reality of the market are worlds apart.



Brie Stephens leads Lake Life Realty at Compass, the top-performing lakefront real estate team in New Hampshire's Lakes Region, and she hears this regularly. "We take the tax assessments, the Zestimates for these, and we line them up vertically with all these comparable properties and show that there is no marriage or relationship between the Zestimate and what the property actually sold for."



That visual exercise, a simple side-by-side comparison, tends to shift the conversation fast.

In most residential markets, price per square foot gives buyers and sellers a reasonable ballpark. In the Lakes Region, it tells you almost nothing useful. Brie is direct about this. Price per square foot does not work here. Price per acre does not work. Price per linear foot of shoreline does not work. She explains that if you ran those numbers across a broad set of closed lakefront sales, you would find no consistent pattern. The correlation simply is not there.



The reason is not a flaw in the data. It is the nature of the product itself.



Two properties can sit on the same lake, with the same number of feet of frontage, and carry wildly different values because of what that frontage actually delivers. One shoreline might offer crystal-clear, sandy-bottom water with a level entry, a gradual slope, and easy swim access. The other might have murky, soft-bottom water and a steep rocky ledge that makes getting to the lake difficult. Those are not the same asset, even if they measure out identically on paper.



Brie sees the same dynamic play out with views. A view property is not just a view property. The direction it faces matters. South and west exposures deliver more usable afternoon sun, which is everything when you are planning a summer on the water. The backdrop matters too. Hill views and mountain views carry different weight. And within mountain views, not all mountains are equal.

Lake Life Realty specializes in luxury waterfront properties on Lake Winnipesaukee and throughout the NH Lakes Region, and one of the clearest illustrations of that expertise is understanding exactly where automated valuation tools fall short.



Brie explains it this way: Zestimate algorithms are built around price per square foot and broad comparable sales data. They cannot distinguish between a true lakefront property, a water access property, and a home that simply happens to be in a lakefront town. To the algorithm, those might look similar. To a buyer who has spent summers on Lake Winnipesaukee, they are entirely different lifestyles and entirely different investments.



The algorithm also cannot factor in sun exposure, water quality, proximity to marinas and town, or the orientation of a dock. These are the details that a buyer standing on a dock at four in the afternoon cares about deeply. They are also the details that drive price.

Brie Stephens was named to NAR's 30 Under 30 and has closed over $128 million in lakefront property sales, and that experience has made one thing clear: pricing a lakefront property well requires looking at true comparables with a local lens and weighing the qualitative factors that no spreadsheet captures automatically.



When she works with sellers on pricing, she pulls the closed comparables alongside the tax assessments and Zestimates for those same properties and lets the gap speak for itself. The data makes the case better than any argument could. Sellers see the disconnect quickly, and from there the conversation can move toward a pricing strategy that reflects what the market has actually demonstrated.



That is the difference between a local expert and an algorithm. The algorithm processes numbers. A specialist understands why a west-facing, sandy-bottom shoreline on a clear New Hampshire lake is worth what it is worth, and can prove it.