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21 Beacon St

Boston, MA 02108

1 ba 300 sqft Built 1899 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

YearBuildingLandTotal assessedTax paid
2025 $366,800 $366,800 $4,248
2024 $356,400 $356,400 $3,885
2023 $356,400 $356,400 $3,828
2022 $386,200 $386,200 $4,202
2021 $378,600 $378,600 $4,040
2020 $352,800 $352,800 $3,726
2019 $332,800 $332,800 $3,508
2018 $313,800 $313,800 $3,289
2017 $298,900 $298,900 $3,165
2016 $299,000 $299,000 $3,289
2015 $238,176 $238,176 $2,884
2014 $222,594 $222,594 $2,800
2006 $146,900 $146,900 $1,634
2005 $133,500 $133,500 $1,432
2004 $133,500 $133,500 $1,355

Property facts

Year built
1899
Property type
condos
Stories
Beds
Baths
1
Living area
300 sqft
Lot size
ZIP code
02108
City
Boston
Street
Beacon St
Coordinates
42.35821, -71.06238

Comparable properties nearby

Block-level micro-comps

Same street, ±3 house numbers, sold in the last 24 months

Frequently asked questions

When did 21 Beacon St last sell?
No public-record sale is on file for 21 Beacon St.
What is the current tax assessment for 21 Beacon St?
The most recent total assessment for 21 Beacon St (year 2025) is $366,800 with $4,248 in property tax.
When was 21 Beacon St built?
21 Beacon St was built in 1899.
How does 21 Beacon St compare to others on Beacon St?
We track 8 other properties on Beacon St. Browse the list under "Other properties on Beacon St" to compare beds, baths, and sale history.
What are the property facts for 21 Beacon St?
21 Beacon St is a 1 bath, 300 sqft condos.
Is 21 Beacon St a flip candidate?
No — 21 Beacon St does not appear in our flips dataset.
Is 21 Beacon St a tax-appeal candidate?
No — 21 Beacon St is not currently flagged as a tax-appeal candidate.

Forecast for this area

ZIP-area linear projection — not a per-property automated valuation
Quarterly trend
+9.6%
Implied 1-yr
+38.5%
2026 Q3
$7.5M
2026 Q4
$7.5M
ZIP 02108 — Median Price History + Forecast

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