9 Monument St
Boston, MA 02129
4 bd 3 ba 2,466 sqft Built 1885 Lot 2,061 sqft multi_family
Most recent sale
$1,350,000
Dec 10, 2021
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Sep 18, 2024 | Listed | $1,899,000 | MLSPIN |
| Aug 20, 2024 | Listing removed | $1,899,000 | MLSPIN |
| Aug 1, 2024 | Listing removed | $3,799,000 | MLSPIN |
| Jun 11, 2024 | Listed | $1,899,000 | MLSPIN |
| Feb 21, 2024 | Listing removed | $2,050,000 | MLSPIN |
| Jan 3, 2024 | Listing removed | $3,835,000 | MLSPIN |
| Nov 28, 2023 | Listed | $2,050,000 | MLSPIN |
| Nov 28, 2023 | Listing removed | $2,125,000 | MLSPIN |
| Sep 26, 2023 | Price changed | $2,125,000 | MLSPIN |
| Sep 5, 2023 | Price changed | $2,185,000 | MLSPIN |
| Aug 22, 2023 | Listing removed | $2,285,000 | MLSPIN |
| Aug 14, 2023 | Listed | $2,285,000 | MLSPIN |
| Aug 3, 2023 | Listed | $2,285,000 | MLSPIN |
| Dec 10, 2021 | Sold | $1,350,000 | MLS #72915805 |
| Nov 3, 2021 | Listed | $1,200,000 | MLS #72915805 |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $973,700 | $338,500 | $1,312,200 | $15,195 |
| 2024 | $855,600 | $188,600 | $1,044,200 | $11,382 |
| 2023 | $733,400 | $363,300 | $1,096,700 | $11,779 |
| 2022 | $734,000 | $339,600 | $1,073,600 | $11,681 |
| 2021 | $712,600 | $329,700 | $1,042,300 | $11,121 |
| 2020 | $574,600 | $325,500 | $900,100 | $9,505 |
| 2019 | $574,400 | $244,000 | $818,400 | $8,626 |
| 2018 | $535,300 | $244,000 | $779,300 | $8,167 |
| 2017 | $498,200 | $244,000 | $742,200 | $7,860 |
| 2016 | $430,700 | $244,000 | $674,700 | $7,422 |
| 2015 | $303,432 | $256,432 | $559,864 | $6,780 |
| 2014 | $247,220 | $256,432 | $503,652 | $6,336 |
| 2006 | $358,200 | $172,900 | $531,100 | $5,906 |
| 2005 | $310,700 | $172,900 | $483,600 | $5,189 |
| 2004 | $272,300 | $172,900 | $445,200 | $4,519 |
Property facts
Year built
1885
Property type
multi_family
Stories
3
Beds
4
Baths
3
Living area
2,466 sqft
Lot size
2,061 sqft
ZIP code
02129
City
Boston
Street
Monument St
Coordinates
42.37736, -71.05998
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
$7,151
Gross rental yield
6.36%
Implied cap rate
4.13%
Trend-extrapolated value
—
Frequently asked questions
When did 9 Monument St last sell?
9 Monument St most recently sold on Dec 10, 2021 for $1,350,000.
What is the current tax assessment for 9 Monument St?
The most recent total assessment for 9 Monument St (year 2025) is $1,312,200 with $15,195 in property tax.
How does 9 Monument St's assessment compare to its last sale price?
The current assessment is 2.8% below the last sale price of $1,350,000.
When was 9 Monument St built?
9 Monument St was built in 1885.
How does 9 Monument St compare to others on Monument St?
We track 6 other properties on Monument St. Browse the list under "Other properties on Monument St" to compare beds, baths, and sale history.
What are the property facts for 9 Monument St?
9 Monument St is a 4 bed, 3 bath, 2,466 sqft, 2,061 sqft lot multi_family.
Is 9 Monument St a flip candidate?
No — 9 Monument St does not appear in our flips dataset.
Is 9 Monument St a tax-appeal candidate?
No — 9 Monument 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 Monument St