18 Mason St
Boston, MA 02136
4 bd 2 ba 1,675 sqft Built 1910 Lot 5,125 sqft multi_family
Most recent sale
$550,000
Sep 1, 2022
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Sep 1, 2022 | Sold | $550,000 | MLS #73020763 |
| Jul 18, 2022 | Listing removed | $599,900 | MLSPIN |
| Jun 8, 2022 | Listed | $599,900 | MLS #72994584 |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $404,000 | $206,800 | $610,800 | $7,073 |
| 2024 | $336,900 | $195,100 | $532,000 | $5,799 |
| 2023 | $290,700 | $174,200 | $464,900 | $4,993 |
| 2022 | $269,000 | $161,300 | $430,300 | $4,682 |
| 2021 | $263,800 | $158,100 | $421,900 | $4,502 |
| 2020 | $262,200 | $152,000 | $414,200 | $4,374 |
| 2019 | $292,800 | $113,200 | $406,000 | $4,279 |
| 2018 | $255,800 | $113,200 | $369,000 | $3,867 |
| 2017 | $238,200 | $113,200 | $351,400 | $3,721 |
| 2016 | $195,100 | $113,200 | $308,300 | $3,391 |
| 2015 | $200,400 | $110,900 | $311,300 | $3,770 |
| 2014 | $162,300 | $110,900 | $273,200 | $3,437 |
| 2006 | $264,400 | $57,300 | $321,700 | $3,577 |
| 2005 | $242,400 | $57,300 | $299,700 | $3,216 |
| 2004 | $230,300 | $57,300 | $287,600 | $2,919 |
Property facts
Year built
1910
Property type
multi_family
Stories
3
Beds
4
Baths
2
Living area
1,675 sqft
Lot size
5,125 sqft
ZIP code
02136
City
Boston
Street
Mason St
Coordinates
42.24771, -71.12633
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
$4,858
Gross rental yield
10.60%
Implied cap rate
6.89%
Trend-extrapolated value
—
Frequently asked questions
When did 18 Mason St last sell?
18 Mason St most recently sold on Sep 1, 2022 for $550,000.
What is the current tax assessment for 18 Mason St?
The most recent total assessment for 18 Mason St (year 2025) is $610,800 with $7,073 in property tax.
How does 18 Mason St's assessment compare to its last sale price?
The current assessment is 11.1% above the last sale price of $550,000.
When was 18 Mason St built?
18 Mason St was built in 1910.
How does 18 Mason St compare to others on Mason St?
We track 3 other properties on Mason St. Browse the list under "Other properties on Mason St" to compare beds, baths, and sale history.
What are the property facts for 18 Mason St?
18 Mason St is a 4 bed, 2 bath, 1,675 sqft, 5,125 sqft lot multi_family.
Is 18 Mason St a flip candidate?
No — 18 Mason St does not appear in our flips dataset.
Is 18 Mason St a tax-appeal candidate?
No — 18 Mason 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
+4.5%
Implied 1-yr
+17.9%
2026 Q3
$850.2K
2026 Q4
$879.7K
ZIP 02136 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Mason St