21 Prospect St
Boston, MA 02129
2 bd 2 ba 1,000 sqft Built 1890 condos
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 | $794,100 | — | $794,100 | $9,196 |
| 2024 | $763,300 | — | $763,300 | $8,320 |
| 2023 | $726,300 | — | $726,300 | $7,800 |
| 2022 | $698,300 | — | $698,300 | $7,598 |
| 2021 | $684,600 | — | $684,600 | $7,305 |
| 2020 | $644,700 | — | $644,700 | $6,808 |
| 2019 | $602,300 | — | $602,300 | $6,348 |
| 2018 | $573,700 | — | $573,700 | $6,012 |
| 2017 | $668,040 | — | $668,040 | $7,075 |
| 2016 | $530,200 | — | $530,200 | $5,832 |
| 2015 | $463,000 | — | $463,000 | $5,607 |
| 2014 | $412,200 | — | $412,200 | $5,185 |
| 2006 | $502,700 | — | $502,700 | $5,590 |
| 2005 | $502,700 | — | $502,700 | $5,394 |
Property facts
Year built
1890
Property type
condos
Stories
—
Beds
2
Baths
2
Living area
1,000 sqft
Lot size
—
ZIP code
02129
City
Boston
Street
Prospect St
Coordinates
42.37540, -71.05766
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Prospect St last sell?
No public-record sale is on file for 21 Prospect St.
What is the current tax assessment for 21 Prospect St?
The most recent total assessment for 21 Prospect St (year 2025) is $794,100 with $9,196 in property tax.
When was 21 Prospect St built?
21 Prospect St was built in 1890.
How does 21 Prospect St compare to others on Prospect St?
We track 8 other properties on Prospect St. Browse the list under "Other properties on Prospect St" to compare beds, baths, and sale history.
What are the property facts for 21 Prospect St?
21 Prospect St is a 2 bed, 2 bath, 1,000 sqft condos.
Is 21 Prospect St a flip candidate?
No — 21 Prospect St does not appear in our flips dataset.
Is 21 Prospect St a tax-appeal candidate?
No — 21 Prospect 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
-2.0%
Implied 1-yr
-8.2%
2026 Q3
$977.9K
2026 Q4
$954.8K
ZIP 02129 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Prospect St