In December 2025, Weston's principal assessor stood before the Select Board with what looked like good news. Eric Josephson told the board that the town's new fiscal year 2026 tax rate would finally end a run nobody wanted: after five straight years atop the state's average single-family tax bill rankings, Weston was about to hand the crown to Brookline. He credited "conservative budgeting and a well-run town."
By August 2026, the Massachusetts Department of Revenue had certified the actual FY2026 numbers. Weston hadn't dropped to second. It still held the state's highest average single-family tax bill, at $26,313.
That gap between the forecast and the certified number is the whole story for anyone comparing Weston to Wellesley, or to any other MetroWest town, on the strength of a rate they saw on a portal listing. The rate went down. The bill still won.
Why the Rate Falling Doesn't Mean the Bill Falling
Weston's FY2026 residential rate is $10.88 per $1,000 of assessed value, down from $11.10 in FY2025 and well off the 26-year peak of $12.98 set in 2021. On paper, that's three straight years of relief.
The mechanism that erases it is assessed value. A town's tax rate isn't a price tag, it's the result of dividing the total budget by the total value of everything on the tax rolls. When Weston's home values climb faster than its budget does, the rate has to fall to raise the same amount of money, even as the average bill keeps growing. Weston's own assessors have documented exactly that pattern: average assessed values rose 6.56% in 2022, 13.55% in 2023, 8.95% in 2024, and 4.34% in 2025, a run driven in large part by remote-work buyers willing to pay more for space further from downtown Boston. The average Weston single-family home is now assessed at roughly $2.42 million. Multiply that by $10.88 and the rate that looked like a discount produces the largest bill in the Commonwealth.
Wellesley, for comparison, set its FY2026 rate at $10.17 per $1,000, on a median assessed home value of $1,751,000. That produces a median tax bill of $17,808, according to the town's own tax classification report. Lower rate, lower typical value, lower bill. Nothing counterintuitive there. Weston is the town where the intuition breaks.
The Surcharge the Rate Doesn't Show You
Underneath both towns' base tax bills sits a second number that never appears in a rate comparison: the Community Preservation Act surcharge.
Wellesley adopted the CPA in 2002 at a 1% surcharge on the annual tax bill. On a median Wellesley home paying $17,808 in base tax, that adds roughly $178 a year.
Weston adopted the CPA in 2001 and went straight to the statutory maximum of 3%, after exempting the first $100,000 of assessed value. On the average Weston home, taxed on roughly $2.32 million after that exemption, 3% works out to somewhere in the neighborhood of $750 a year, more than four times what the median Wellesley household pays into the same program.
Weston | Wellesley | |
|---|---|---|
FY2026 residential tax rate | $10.88 per $1,000 | $10.17 per $1,000 |
Typical assessed value | ~$2.42M (state average) | $1,751,000 (town median) |
Base tax bill | ~$26,313 (highest in Massachusetts) | $17,808 (town median) |
CPA surcharge rate | 3% (maximum allowed, adopted 2001) | 1% (adopted 2002) |
Approximate added CPA cost per year | ~$750 | ~$178 |
Neither number is large enough on its own to steer a buyer away from a town. What it does is quietly widen the real gap between two towns whose headline tax rates look almost identical.
What the Extra Two Points Actually Fund
The CPA surcharge isn't a black box. At Weston's Annual Town Meeting on May 4, 2026, all five Community Preservation Act funding articles passed, appropriating $1.82 million toward specific, named projects that residents voted on line by line:
- $1 million to create two new apartments at the Brook School
- $300,000 for the Tree Advisory Group's Town Green rehabilitation
- $18,000 for a dog park feasibility study
- $400,000 for lights on Field 1 at Weston High School, matched with $150,000 from the Weston Boosters
That last item came with its own small piece of local testimony. A Weston High School junior and field hockey player told the meeting that teams were losing practice time once fall daylight ran out. The lights passed.
None of this makes the surcharge a bad deal. It's the town literally deciding, article by article, how to spend the money it collects. But it means the 3% isn't an abstraction sitting on a tax bill. It's apartments, a rehabilitated green, a dog park study, and stadium lights, funded every single year regardless of what else is happening in the town's operating budget.
The Bills Already Voted, and the One Not Yet on the Table
The same Town Meeting that approved those CPA projects also appropriated $3.1 million in design fees for a new fire station, a project that followed months of site analysis by Weston's Fire Station Working Group and Select Board.
That's the smaller of two capital projects moving through Weston's pipeline right now. The larger one is the Middle and High School building project. The School Committee's feasibility study, completed in 2025, narrowed six construction options down to four, ranging from renovating the existing buildings to constructing two entirely new schools. One estimate for the project, described by the town's own finance officials as conservative, runs near $330 million. The committee's own working sessions have discussed bringing a formal building proposal to Weston's Fall 2026 Town Meeting, with Massachusetts School Building Authority guidance factoring into which option the town pursues.
Town officials have been direct about what that means for tax bills. At the same December 2025 financial summit where Josephson previewed the FY2026 rate, projections presented to the Select Board estimated that between 2028 and 2033, the combination of the fire station and a school building project could raise the median tax bill by as much as 40%, well above Weston's typical five-year increase of roughly 16%.
None of that is baked into the number on today's listing. It's baked into the decade a buyer is about to sign up for.
What This Means If You're Cross-Shopping Weston and Wellesley
If you're comparing carrying costs between these two towns using the rate per $1,000 alone, you're comparing the wrong number twice over. First, because Weston's lower rate sits on top of assessed values high enough to produce the state's largest average bill. Second, because the CPA surcharge, invisible in most rate comparisons, adds a materially larger annual cost in Weston than in Wellesley, funding real, named projects that Town Meeting approves every spring.
Neither town is the wrong choice. But a buyer weighing a $2 million-plus purchase should ask for the actual escrowed monthly number, not the advertised rate, and should ask what capital projects are already moving through the pipeline before assuming this year's tax bill is next year's tax bill. Weston's fire station design money is spent. Its school building conversation is heading toward a vote this fall. Those are facts a lender's estimate won't capture, but a local team tracking Town Meeting warrants will.
That's the kind of comparison the Donahue | Maley | Burns Team runs for buyers weighing Weston against Wellesley or any other MetroWest town, before an offer goes in, not after the first tax bill arrives.
A Few Questions We Hear Often
Does the CPA surcharge apply to every property in Weston? The first $100,000 of assessed value is exempt from Weston's CPA surcharge, a threshold the town has applied since adopting the program in 2001. The surcharge is calculated on the remaining assessed value.
Can a town's CPA rate change? Yes, but only through a town-wide vote. Weston set its rate at the 3% maximum allowed under the state's enabling law in 2001. Changing it would require a new ballot measure, not a Town Meeting article.
Will the fire station and school project definitely raise my tax bill? The fire station design fees are already approved and will factor into future budgets. The school building project has not yet gone to a Town Meeting vote. Town finance officials have presented a conservative estimate near $330 million with a projected 40% bill increase between 2028 and 2033, but the final scope and cost will depend on what residents approve this fall and beyond.
If you're weighing a move between Weston, Wellesley, or another MetroWest town, and want the full picture of what a home actually costs to hold long term, not just what the listing rate suggests, reach out to the Donahue | Maley | Burns Team. We'll walk through the real numbers town by town before you write an offer.
