What Weston's Rising Median Price Actually Measures

Last October, a small group of residents followed Boston Properties' Keir Evans and Planning Board member Al Aydelott across a quarry-pond campus on Boston Post Road, watching a helium balloon hover at the exact height a proposed townhouse roofline would reach. The balloon was there to answer the only question most people actually had: how much of the sky would change. It is an odd way to preview a housing plan, a group of neighbors in a parking lot studying a balloon, but it says something true about how this town handles change. Weston measures twice.

That same instinct explains something the headline price numbers cannot: why Weston's home values look like they are climbing twice as fast as they actually are.

The number on the portal

If you have looked up Weston recently, you have seen a market that appears to be sprinting. Over the three months ending in May 2026, the median sale price reached $2.7 million, up 12.7 percent from the same stretch a year earlier. The average sale price, in Redfin's most recent monthly reading, was $2.73 million, up 10.3 percent year over year. Thirty-two homes changed hands in May 2026, compared with 27 in May 2025.

Set next to those figures is a very different number. Zillow's Home Value Index, which tracks the value of a consistent "typical" home over time rather than whatever happened to close in a given window, put Weston's typical home at $2,068,415 in its 2026 report, up just 2.0 percent over the past year.

Both sets of numbers are accurate. They are just measuring different things, and the gap between them is the story.

The gap that matters more than the headline

A median or an average only tells you about the homes that actually sold in a given period. If a run of $3 million-plus estates closes while fewer mid-tier homes trade, the median jumps even though no individual house got more valuable. Zillow's index tries to strip that composition effect out, which is why it barely moved while the raw sale figures moved by double digits.

The days-on-market number is the tell. In a market that is simply getting hotter, homes usually sell faster, not slower. Weston's average time on market stretched from 16 days to 24, in the same period prices were rising. That is not what acceleration looks like. It is what happens when a bigger share of the closings are large estate-level properties that take longer to find the right buyer, while the mid-range homes that used to anchor the median keep moving quickly and competitively. Redfin's own market read for the town still describes many homes getting multiple offers with some waived contingencies, and "hot" homes closing in around 15 days at a premium above list. That fast-moving middle is real. It is just being outweighed, in the headline average, by a slower-moving top.

For a buyer comparing Weston against other MetroWest towns, the practical takeaway is not "Weston is up 12 percent." It is that the typical house in Weston is worth roughly what it was worth a year ago, plus a couple of points, and the double-digit number reflects which homes happened to close, not a uniform repricing of the town.

The vote that explains the scarcity

Part of why Weston's inventory behaves this way traces back to a zoning fight that most people outside town never heard about. Between April and November 2024, the town held thirteen public workshops, office hours, and hearings to shape a plan under the state's MBTA Communities Act, the law requiring communities served by the MBTA to allow multifamily housing by right near transit. Voters rejected that plan anyway. At a December 2024 Special Town Meeting, Weston voters turned down the rezoning proposal by a vote of 544 opposed to 195 in favor, with five abstentions.

The following January, the Massachusetts Supreme Judicial Court affirmed the law's constitutionality and the Attorney General's power to enforce it. Weston's planning board spent the following months revising its approach and, working with Boston Properties, put together a new proposal tied to a development agreement for 133 Boston Post Road. Select Board Chair Lise Revers told residents that the Attorney General's office had threatened enforcement action, including daily fines and a loss of state aid, beginning that January if the plan failed again.

At a Special Town Meeting on October 15, 2025, more than 470 residents packed the high school auditorium and approved the revised plan by a vote of 387 to 86, along with the amended development agreement with Boston Properties.

Select Board Chair Lise Revers said the plan struck "the right balance between current development and long-term zoning." Planning Board Chair Leslie Glynn credited a late change in strategy, getting state approval to use the future relocated location of the Kendal Green commuter rail stop rather than its current site, as the piece that made the math work.

"That was a real door-opener."

Without it, only the northernmost sliver of the development site would have qualified for multifamily zoning under the law's half-mile transit radius. With it, nearly the entire 74-acre parcel does.

What 480 units actually buys the town

The approved plan creates four multifamily overlay districts. Three, Merriam Village, 751 Boston Post Road, and 75/99 Norumbega Road, are described by the town's own planning board as long-term districts unlikely to see near-term development. The one with real near-term shape sits at 133 Boston Post Road, the 74-acre former Biogen and Monster campus, a 350,000-square-foot office building completed in 2010 and now owned by Boston Properties.

Under the approved agreement, the site splits into three zones. Zone A1, in the northeast corner, allows up to 100 townhomes, capped at 40 feet for pitched roofs and 35 feet for flat roofs, no more than three stories, with two parking spaces per unit. Zone A2, the existing parking structure between the site's two quarry ponds and adjacent to the MBTA tracks, allows up to 280 multifamily units. Zone A3, the current office building footprint, allows up to 100 age-restricted units, a phase Boston Properties offered voluntarily beyond what the law required. All told, the site could eventually hold up to 480 units, with 15 percent required to be affordable under the law (or 10 percent, if the state determines 15 percent isn't financially feasible).

As of its most recent public comment following the vote, Boston Properties said it was not yet ready to discuss its larger project plan. That is worth sitting with. What passed in October 2025 is zoned capacity, not a construction timeline. The state's mandate requires Weston to zone for at least 750 multifamily units townwide, with 40 percent within a half mile of Kendal Green. The 133 Boston Post Road site alone doesn't reach that number, which is part of why the other three overlay districts exist on paper even though nobody expects them to move soon.

What this means if you're weighing Weston against the rest of MetroWest

None of this changes the zoning across most of Weston, still governed by Districts A through D, where a single-family home remains the only use allowed by right. The large-lot, low-density character that has defined Weston's classic inventory, and its scarcity-driven pricing, for decades is untouched by the vote. What the plan adds is a capped, geographically concentrated pocket of housing types the town has not offered before: townhomes, standard multifamily units, and age-restricted housing, all clustered around one commuter rail corridor rather than spread through the rest of town.

If you're comparing Weston to a neighboring town on price, two things are worth carrying with you. First, look past the median when you can. A typical-home index tells you more about whether Weston itself is getting more expensive than a raw sale price does, since the raw figure moves with whatever happened to close that month. Second, the new zoning is a future product-type story, not a near-term inventory release. Boston Properties hasn't set a construction schedule, and the three other overlay districts are explicitly framed by the town as unlikely to build soon. If you need a home in Weston this year, you are still shopping the same large-lot, single-family stock that has always defined this town.

A few questions worth asking before you commit

Will the new zoning make Weston homes cheaper? Not directly, and not soon. The approved capacity sits on one site, Boston Properties hasn't announced a construction timeline, and the rest of town's single-family-only zoning is unchanged.

Why did days on market rise if prices are going up? Because the two figures are being pulled by different parts of the market. Homes at the competitive middle still close quickly, often in multiple-offer situations, while a growing share of large, high-end estate sales take longer to find the right buyer. When more of those slower closings land in a given window, the average time on market rises even as the average price does too.

What's the real difference between the median price and Zillow's typical home value? The median and average only reflect whatever actually sold in a given period. If several $3 million-plus homes close together, both figures jump even though no individual house became more valuable. Zillow's index is built to isolate a consistent typical home's value over time, which is why it moved by roughly 2 percent while the raw sale figures moved by 10 to 13 percent over the same stretch.

Weston's numbers reward a close read rather than a quick glance at a portal's homepage. If you're comparing Weston against Wellesley, Concord, or another Greater Boston town and want a straight read on what a given number actually means for your search, Kendrick Real Estate can walk through it with you, town by town, house by house.