21 Allen St
Arlington, MA 02474
5 bd 3 ba 2,647 sqft Built 1922 Lot 4,948 sqft multi_family
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 | $541,800 | $591,200 | $1,133,000 | $12,202 |
| 2024 | $501,800 | $562,800 | $1,064,600 | $11,274 |
| 2023 | $536,800 | $471,900 | $1,008,700 | $11,308 |
| 2022 | $532,200 | $454,800 | $987,000 | $11,272 |
| 2021 | $508,900 | $454,800 | $963,700 | $10,928 |
| 2020 | $509,200 | $454,800 | $964,000 | $10,662 |
| 2019 | $397,500 | $483,200 | $880,700 | $9,917 |
| 2018 | $397,500 | $352,500 | $750,000 | $9,098 |
| 2017 | $374,000 | $307,000 | $681,000 | $8,553 |
| 2016 | $374,000 | $261,500 | $635,500 | $8,134 |
| 2015 | $335,300 | $255,800 | $591,100 | $8,009 |
| 2014 | $335,300 | $210,300 | $545,600 | $7,524 |
| 2006 | $404,700 | $185,900 | $590,600 | $6,697 |
| 2005 | $372,700 | $159,200 | $531,900 | $5,819 |
| 2004 | $387,700 | $159,200 | $546,900 | $5,819 |
| 2003 | $258,700 | $122,200 | $380,900 | $5,184 |
Property facts
Year built
1922
Property type
multi_family
Stories
3
Beds
5
Baths
3
Living area
2,647 sqft
Lot size
4,948 sqft
ZIP code
02474
City
Arlington
Street
Allen St
Coordinates
42.41128, -71.14681
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Allen St last sell?
No public-record sale is on file for 21 Allen St.
What is the current tax assessment for 21 Allen St?
The most recent total assessment for 21 Allen St (year 2025) is $1,133,000 with $12,202 in property tax.
When was 21 Allen St built?
21 Allen St was built in 1922.
How does 21 Allen St compare to others on Allen St?
We track 7 other properties on Allen St. Browse the list under "Other properties on Allen St" to compare beds, baths, and sale history.
What are the property facts for 21 Allen St?
21 Allen St is a 5 bed, 3 bath, 2,647 sqft, 4,948 sqft lot multi_family.
Is 21 Allen St a flip candidate?
No — 21 Allen St does not appear in our flips dataset.
Is 21 Allen St a tax-appeal candidate?
No — 21 Allen 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
+0.5%
Implied 1-yr
+1.8%
2026 Q3
$1.16M
2026 Q4
$1.17M
ZIP 02474 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Allen St