Pull up four different sites for the same Closter, New Jersey ZIP code this summer and you will get four different answers to the same question. One site puts the average home value at $1,181,658, up 7.6 percent over the past year. Another shows a median sale price near $1.5 million. A third lists the median asking price for August 2026 at $1.37 million. A fourth shows the median sale price at $1,149,000, down 13 percent year over year in the same window everyone else is calling a gain.
None of these sites made an error. They are measuring different things, at different moments, in a town that just went through a property reassessment that reset what "value" even means on paper. If you are trying to buy in Closter this fall, the spread between those numbers is not noise you can average away. It is the story.
Four Numbers, Four Different Questions
Here is what each figure is actually answering, stripped of the marketing language:
| Source figure | What it measures | Timeframe as stated by the source |
|---|---|---|
| Average home value, $1,181,658 (+7.6%) | An automated valuation model's estimate across all homes, sold or not | Updated April 2026 |
| Median sale price, roughly $1.5M (+4.6%) | Closed transactions only | Tied to July 2025 in the same breath the page calls it "last month" |
| Median list price, $1.37M | What sellers are currently asking | August 2026 |
| Median sale price, $1,149,000 (-13%) | Closed transactions, different sample window | No month specified on the page itself |
A homebuyer comparing these side by side could reasonably conclude the market is simultaneously up 7.6 percent and down 13 percent. It is neither. Part of the gap is methodology. Part of it is that at least one of these sites cannot even agree with itself on what month it is describing.
The Top of the Market Is Doing Something Different Than the Middle
Look at what has been closing at the high end. Earlier this year, a snapshot of recently sold Closter homes showed a median listing price around $1.57 million for that batch, with typical marketing time of 82 days and buyers submitting an average of four offers per property. That is not a typical Closter transaction, it is the top of the market. Separately, a nearly 15,000-square-foot new construction estate designed by Z+ Architects is under development on close to three acres at the end of a quiet cul-de-sac, expected to finish late 2026 or early 2027. Other recent listings describe new construction on what agents and buyers in town call East Hill, homes running six bedrooms and six and a half baths with soaring ceilings and walls of glass.
None of that is typical Closter housing stock. Over half the borough's homes were built between the 1940s and 1960s, modest capes and colonials from the postwar boom. But a handful of multimillion-dollar teardown-to-new-construction sales at the top of the market pull the average upward even when the bulk of transactions, the ranches and split-levels changing hands in the $900,000 to $1.3 million range, are moving at a much calmer pace. That is a large part of why the "average" and the "median" tell such different stories. The average gets stretched by a smaller number of very large sales. The median does not.
The Reassessment Changes What These Numbers Mean
Here is the part that matters most if you are actually closing on a house. Closter was one of a large group of Bergen County municipalities that went through a property tax reassessment in 2026, alongside neighbors like Cresskill and Dumont. The borough hired Appraisal Systems, Inc. to conduct it, and gave residents a presentation explaining the process earlier this year.
New Jersey ties every reassessment to a specific date: October 1 of the year before the tax year. For the 2026 tax cycle, that meant assessed values were supposed to reflect what a home would have sold for as of October 1, 2025, not what it is selling for today. Assessment notices go out to Closter property owners each February, showing both a market value and an assessed value, and this year's went out in February 2026. Because Closter reassessed this year, its property tax appeal deadline was pushed to May 1, 2026, a full month later than the standard April 1 deadline that applies in towns that did not reassess.
That timing detail is not trivia. It means two things for anyone closing on a Closter home this fall. First, whatever assessed value shows up on the listing sheet was locked in against an October 2025 snapshot, which is now nearly a year old relative to today's sale price. If you are paying more than that snapshot suggests, and in a market where prices have moved, you likely are, your tax bill this year will not yet reflect that gap. The reassessment reset everyone to the same starting line; it did not promise to keep pace with this year's appreciation. Second, the appeal window that mattered for this cycle already closed. If you are buying now and believe the assessed value on your specific property is out of step with what you paid, you are working within the borough's regular deadlines going forward, not the special reassessment-year calendar. Bergen County's own appeal calendar typically returns to the standard April 1 date the year after a reassessment concludes, unless the borough reassesses again.
Ask your attorney or the seller's agent for the actual current tax bill, not a portal's estimate. The two are answering different questions, and only one of them is legally enforceable.
The Old Village School Is Becoming 35 Homes
While the top of the market chases new construction, the borough is also adding housing at the other end of the spectrum. In January 2026, Mayor John Glidden led a groundbreaking ceremony at the former Village School, a building that had sat mostly unused for nearly three decades. The site at 511 Durie Avenue is being converted by Mastermind Development into Village School Commons, 35 income-restricted rental apartments and townhouses, financed through a combination of federal low-income housing tax credits, tax-exempt bonds, and support from the New Jersey Housing and Mortgage Finance Agency. Construction is projected to finish by 2027.
Radame Perez, Mastermind's president, called the project's financial closing more than a milestone.
"It represents a promise kept to the Closter community."
Village School Commons will not show up in the sale-price comps buyers are pulling on the portals. It is rental housing, income-restricted, and it will not compete with a listing on Brook Street or East Hill. But it matters for the same reason the reassessment matters: it is another force pulling on Closter's housing picture from a direction the median sale price cannot see. A town simultaneously building 15,000-square-foot estates and converting a 1900s schoolhouse into affordable rentals is not moving in one direction. It is moving in several at once, and the single number a portal hands you flattens all of it into something that looks simpler than it is.
What This Means If You're Closing on a Closter Home This Fall
- Ask for the current, actual property tax bill on the specific house, not an automated estimate. The assessed value reflects an October 2025 snapshot, and your purchase price may already be ahead of it.
- Treat "average" price figures with more skepticism than "median" figures right now. A small number of very large new-construction sales can pull an average upward without changing what a typical buyer will pay.
- If you believe your specific assessment is wrong, confirm your borough's current appeal deadline directly with the Bergen County Board of Taxation rather than assuming last year's date still applies.
- Compare any online estimate against actual closed sales in the same price band and same era of construction. A 1950s cape and a 2026 East Hill new build are not the same market even though they share a ZIP code.
A Few Questions Worth Asking Before You Sign
Does the reassessment mean my taxes will jump right after I buy? Not automatically. The assessed value is fixed against the October 1, 2025 valuation date until the next reassessment or a successful appeal changes it. Your purchase price and the assessed value can sit apart from each other for a while.
Why do Zillow and Redfin show such different numbers for the same town? They are answering different questions. One is an automated estimate across all homes. The other reflects only closed sales, in a specific window, which can be a much smaller and more skewed sample.
Is Closter's appeal deadline always in May? Not typically. May 1, 2026 applied because the borough reassessed this year. In a normal year, Bergen County's standard deadline is April 1.
Numbers that disagree this much are not a reason to guess. They are a reason to have someone read the actual comps, the actual tax record, and the actual construction pipeline before you write an offer. If you are weighing a move into Closter or anywhere else along the Bergen County and Hudson Valley corridor, Bobbie Procida can walk through what these numbers mean for the specific house you're looking at. Schedule a consultation before you sign anything.