4 Key St
Millis, MA 02054
2 bd 2 ba 1,236 sqft Built 1984 condo_townhome_rowhome_coop
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 | $362,200 | — | $362,200 | $5,940 |
| 2024 | $359,000 | — | $359,000 | $5,895 |
| 2023 | $321,800 | — | $321,800 | $5,628 |
| 2022 | $294,500 | — | $294,500 | $5,560 |
| 2021 | $278,100 | — | $278,100 | $5,456 |
| 2020 | $237,000 | — | $237,000 | $4,773 |
| 2019 | $237,100 | — | $237,100 | $4,434 |
| 2018 | $237,100 | — | $237,100 | $4,273 |
| 2017 | $299,200 | — | $299,200 | $5,511 |
| 2016 | $288,700 | — | $288,700 | $5,035 |
| 2015 | $288,700 | — | $288,700 | $4,908 |
| 2014 | $288,700 | — | $288,700 | $4,925 |
| 2006 | $227,300 | — | $227,300 | $2,614 |
| 2005 | $216,100 | — | $216,100 | $2,507 |
| 2003 | $146,200 | — | $146,200 | $2,266 |
Property facts
Year built
1984
Property type
condo_townhome_rowhome_coop
Stories
—
Beds
2
Baths
2
Living area
1,236 sqft
Lot size
—
ZIP code
02054
City
Millis
Street
Key St
Coordinates
42.17896, -71.36433
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 4 Key St last sell?
No public-record sale is on file for 4 Key St.
What is the current tax assessment for 4 Key St?
The most recent total assessment for 4 Key St (year 2025) is $362,200 with $5,940 in property tax.
When was 4 Key St built?
4 Key St was built in 1984.
How does 4 Key St compare to others on Key St?
We track 8 other properties on Key St. Browse the list under "Other properties on Key St" to compare beds, baths, and sale history.
What are the property facts for 4 Key St?
4 Key St is a 2 bed, 2 bath, 1,236 sqft condo_townhome_rowhome_coop.
Is 4 Key St a flip candidate?
No — 4 Key St does not appear in our flips dataset.
Is 4 Key St a tax-appeal candidate?
No — 4 Key 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
+0.7%
Implied 1-yr
+2.8%
2026 Q3
$740.5K
2026 Q4
$745.3K