421 Union St
Millis, MA 02054
4 bd 3 ba 2,806 sqft Built 1994 Lot 22,216 sqft single_family
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 | $422,400 | $242,600 | $665,000 | $10,906 |
| 2024 | $391,800 | $223,900 | $615,700 | $10,110 |
| 2023 | $384,600 | $178,500 | $563,100 | $9,849 |
| 2022 | $317,500 | $191,400 | $508,900 | $9,608 |
| 2021 | $302,000 | $165,500 | $467,500 | $9,172 |
| 2020 | $291,400 | $154,700 | $446,100 | $8,984 |
| 2019 | $287,000 | $142,600 | $429,600 | $8,034 |
| 2018 | $287,000 | $142,600 | $429,600 | $7,741 |
| 2017 | $259,000 | $125,500 | $384,500 | $7,082 |
| 2016 | $259,000 | $125,500 | $384,500 | $6,706 |
| 2015 | $259,000 | $125,500 | $384,500 | $6,537 |
| 2014 | $247,500 | $143,600 | $391,100 | $6,672 |
| 2006 | $257,700 | $159,200 | $416,900 | $4,794 |
| 2005 | $244,000 | $147,400 | $391,400 | $4,540 |
| 2003 | $203,900 | $94,800 | $298,700 | $4,630 |
Property facts
Year built
1994
Property type
single_family
Stories
—
Beds
4
Baths
3
Living area
2,806 sqft
Lot size
22,216 sqft
ZIP code
02054
City
Millis
Street
Union St
Coordinates
42.17626, -71.36375
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 421 Union St last sell?
No public-record sale is on file for 421 Union St.
What is the current tax assessment for 421 Union St?
The most recent total assessment for 421 Union St (year 2025) is $665,000 with $10,906 in property tax.
When was 421 Union St built?
421 Union St was built in 1994.
How does 421 Union St compare to others on Union St?
We track 8 other properties on Union St. Browse the list under "Other properties on Union St" to compare beds, baths, and sale history.
What are the property facts for 421 Union St?
421 Union St is a 4 bed, 3 bath, 2,806 sqft, 22,216 sqft lot single_family.
Is 421 Union St a flip candidate?
No — 421 Union St does not appear in our flips dataset.
Is 421 Union St a tax-appeal candidate?
No — 421 Union 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
-1.2%
Implied 1-yr
-5.0%
2026 Q3
$697.6K
2026 Q4
$688.1K
ZIP 02054 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Union St