21 Warren St
Waltham, MA 02451
2 bd 1 ba 707 sqft Built 1982 condos
Most recent sale
$295,000
Dec 6, 2021
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Dec 6, 2021 | Sold | $295,000 | MLS #72876306 |
| Oct 25, 2021 | Price changed | $310,000 | MLS #72876306 |
| Oct 12, 2021 | Price changed | $319,900 | MLS #72876306 |
| Oct 4, 2021 | Price changed | $324,900 | MLS #72876306 |
| Sep 22, 2021 | Price changed | $329,900 | MLS #72876306 |
| Aug 31, 2021 | Price changed | $339,900 | MLS #72876306 |
| Aug 4, 2021 | Listed | $349,900 | MLS #72876306 |
| Jul 18, 1997 | Sold | $85,500 | Public Record |
| Sep 1, 1986 | Sold | $117,000 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $394,200 | — | $394,200 | $3,871 |
| 2024 | $361,100 | — | $361,100 | $3,481 |
| 2023 | $347,200 | — | $347,200 | $3,583 |
| 2022 | $337,700 | — | $337,700 | $3,762 |
| 2021 | $344,100 | — | $344,100 | $3,895 |
| 2020 | $294,500 | — | $294,500 | $3,519 |
| 2019 | $272,800 | — | $272,800 | $3,454 |
| 2018 | $243,400 | — | $243,400 | $3,069 |
| 2017 | $243,400 | — | $243,400 | $3,057 |
| 2016 | $216,100 | — | $216,100 | $2,645 |
| 2015 | $196,000 | — | $196,000 | $2,573 |
| 2013 | $178,900 | — | $178,900 | $2,413 |
| 2006 | $225,900 | — | $225,900 | $2,334 |
| 2005 | $206,000 | — | $206,000 | $2,037 |
| 2004 | $192,300 | — | $192,300 | $1,771 |
| 2003 | $169,100 | — | $169,100 | $1,635 |
Property facts
Year built
1982
Property type
condos
Stories
—
Beds
2
Baths
1
Living area
707 sqft
Lot size
—
ZIP code
02451
City
Waltham
Street
Warren St
Coordinates
42.37510, -71.20948
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsInvestment analysis
Estimates based on local averages — not personalized adviceEstimated monthly rent
$2,050
Gross rental yield
8.34%
Implied cap rate
5.42%
Trend-extrapolated value
—
Frequently asked questions
When did 21 Warren St last sell?
21 Warren St most recently sold on Dec 6, 2021 for $295,000.
What is the current tax assessment for 21 Warren St?
The most recent total assessment for 21 Warren St (year 2025) is $394,200 with $3,871 in property tax.
How does 21 Warren St's assessment compare to its last sale price?
The current assessment is 33.6% above the last sale price of $295,000.
When was 21 Warren St built?
21 Warren St was built in 1982.
How does 21 Warren St compare to others on Warren St?
We track 8 other properties on Warren St. Browse the list under "Other properties on Warren St" to compare beds, baths, and sale history.
What are the property facts for 21 Warren St?
21 Warren St is a 2 bed, 1 bath, 707 sqft condos.
Is 21 Warren St a flip candidate?
No — 21 Warren St does not appear in our flips dataset.
Is 21 Warren St a tax-appeal candidate?
Yes — 21 Warren St appears in our tax-appeal candidates list, meaning its current assessment exceeds its recent sale price by 15% or more.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+1.6%
Implied 1-yr
+6.3%
2026 Q3
$994.1K
2026 Q4
$1.01M
ZIP 02451 — Median Price History + Forecast
Explore nearby
Geography
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