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Middlesex County · Acton, MAActon, MA property taxes. Prices stalled. Check the notice.
The typical home in Acton was worth about $872,000 in January 2026, 0.0% less than a year earlier. A notice that went up anyway deserves a second look.
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What Acton home values did
Acton values fell 0.0% in the year to January 2026, reaching a new high. That's weaker than Middlesex County as a whole (+1.4%).
Values have been roughly flat since January, through August 2026.
| Month | Typical value | vs. a year earlier |
|---|---|---|
| January 2021 | $625,000 | +9.1% |
| January 2022 | $706,000 | +12.9% |
| January 2023 | $756,000 | +7.1% |
| January 2024 | $828,000 | +9.6% |
| January 2025 | $872,000 | +5.4% |
| January 2026 | $872,000 | -0.0% |
| August 2026 (latest) | $870,000 | -0.2% since January |
Peak since 2021: $874,000 in April 2025. January 2026 was 0.2% below it.
What to check on your notice
If your 2026 notice shows a higher value than last year, ask why. The typical Acton home lost 0.0% over the same stretch. A higher number can still be right for a specific home, for example after a remodel, but the board of assessors should be able to explain it.
How Acton compares nearby
Among 10 Middlesex County places, Acton has the 2nd largest drop from its peak and the 4th highest typical value. Statewide, its 1-year change ranks 66th of 349 Massachusetts places, from weakest to strongest.
| Place | January 2026 | 1-year change | vs. peak |
|---|---|---|---|
| Cambridge | $1,038,000 | -0.6% | -2.0% |
| Lowell | $486,000 | +0.7% | At peak |
| Newton | $1,521,000 | +4.0% | At peak |
| Somerville | $933,000 | +0.8% | At peak |
| Framingham | $665,000 | +0.5% | At peak |
| Malden | $676,000 | +0.3% | At peak |
| Waltham | $825,000 | +1.7% | At peak |
| Medford | $831,000 | +0.8% | At peak |
| Everett | $634,000 | +1.1% | At peak |
| Acton | $872,000 | -0.0% | -0.2% |
Deadline and where to file
Acton values are set by the local board of assessors. File an abatement application with your local board of assessors by the due date of the first actual (not preliminary) tax payment for the fiscal year. In towns with quarterly billing that is usually February 1. If actual bills are mailed after December 31, it is May 1 or 30 days after mailing, whichever is later.
Reading this in fall 2026? For fiscal year 2027 (the July 2026 to June 2027 tax year, valued as of January 1, 2026), actual bills are usually mailed by December 31, 2026, and the abatement deadline is usually February 1, 2027. If your town mails bills after December 31, the deadline moves to May 1, 2027 or 30 days after mailing. Look at the due date of your first actual bill, because it is your deadline.
The Middlesex County guide covers the full Massachusetts abatement process: forms, fees, hearing levels and what happens next.
Building a Acton case
Averages explain why a case might work. The decision turns on evidence about one property. Acton is part of the Boston-Cambridge-Newton metro, but your evidence should be local. Sales a few streets away usually beat sales across the metro.
- Collect sales of comparable properties near your home from the period the town used for its valuation.
Get your Acton appeal report
Start with your address. Vulorean checks your assessment against recent comparable sales and builds a value report you can bring to your Massachusetts abatement. Eligible reports are free during launch; an account is required and local filing fees are separate.
Check my property and get a report →Vulorean was built for California first. Massachusetts forms, deadlines and filing rules vary, so confirm them with your local office before filing. If something in your report looks wrong, email support@vulorean.com and we'll get it fixed.
Home values: Zillow Home Value Index (ZHVI), all homes, mid-tier, smoothed and seasonally adjusted, through August 2026, from Zillow Research. Rules: MGL Chapter 59 Section 59, MGL Chapter 59 Section 64, Massachusetts DLS municipal calendar and abatement guidance (search results), Massachusetts DLS Chapter 6 Property Tax Abatements. Vulorean is an independent service, not a government office. Confirm dates and forms with your local office.