20 Elm St
Acton, MA 01720
4 bd 3 ba 4,139 sqft Built 1970 condo
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $1,163,800 | — | $1,163,800 | $19,959 |
| 2024 | $1,387,100 | — | $1,387,100 | $23,123 |
| 2023 | $396,900 | — | $396,900 | $6,970 |
| 2022 | $443,900 | $287,300 | $731,200 | $14,222 |
| 2021 | $367,000 | $268,900 | $635,900 | $12,864 |
| 2020 | $367,000 | $268,900 | $635,900 | $12,235 |
| 2019 | $345,100 | $268,900 | $614,000 | $11,893 |
| 2018 | $302,700 | $268,900 | $571,600 | $11,078 |
| 2017 | $302,700 | $268,900 | $571,600 | $10,895 |
| 2016 | $302,700 | $230,400 | $533,100 | $10,252 |
| 2015 | $259,100 | $230,400 | $489,500 | $9,325 |
| 2013 | $235,300 | $230,400 | $465,700 | $8,895 |
| 2006 | $250,100 | $244,800 | $494,900 | $7,216 |
| 2005 | $265,000 | $213,600 | $478,600 | $6,609 |
| 2004 | $200,100 | $217,600 | $417,700 | $5,860 |
| 2003 | $193,100 | $196,800 | $389,900 | $5,283 |
Property facts
Year built
1970
Property type
condo
Stories
2
Beds
4
Baths
3
Living area
4,139 sqft
Lot size
—
ZIP code
01720
City
Acton
Street
Elm St
Coordinates
42.48304, -71.47192
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 20 Elm St last sell?
No public-record sale is on file for 20 Elm St.
What is the current tax assessment for 20 Elm St?
The most recent total assessment for 20 Elm St (year 2025) is $1,163,800 with $19,959 in property tax.
When was 20 Elm St built?
20 Elm St was built in 1970.
How does 20 Elm St compare to others on Elm St?
We track 8 other properties on Elm St. Browse the list under "Other properties on Elm St" to compare beds, baths, and sale history.
What are the property facts for 20 Elm St?
20 Elm St is a 4 bed, 3 bath, 4,139 sqft condo.
Is 20 Elm St a flip candidate?
No — 20 Elm St does not appear in our flips dataset.
Is 20 Elm St a tax-appeal candidate?
No — 20 Elm St is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-4.0%
Implied 1-yr
-15.9%
2026 Q3
$547.2K
2026 Q4
$517.9K