21 William Onthank Ln
Southborough, MA 01772
2 bd 2 ba 1,760 sqft Built 1998 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
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $470,400 | — | $470,400 | $6,496 |
| 2024 | $451,900 | — | $451,900 | $6,286 |
| 2020 | $403,300 | — | $403,300 | $5,534 |
| 2018 | $321,200 | — | $321,200 | $5,184 |
| 2016 | $285,400 | — | $285,400 | $4,515 |
| 2015 | $265,400 | — | $265,400 | $4,252 |
| 2014 | $272,900 | — | $272,900 | $4,416 |
| 2006 | $332,900 | — | $332,900 | $4,115 |
| 2005 | $317,900 | — | $317,900 | $4,031 |
| 2004 | $292,900 | — | $292,900 | $3,749 |
| 2003 | $260,000 | — | $260,000 | $3,182 |
Property facts
Year built
1998
Property type
condos
Stories
2
Beds
2
Baths
2
Living area
1,760 sqft
Lot size
—
ZIP code
01772
City
Southborough
Street
William Onthank Ln
Coordinates
42.30254, -71.49476
Comparable properties nearby
Frequently asked questions
When did 21 William Onthank Ln last sell?
No public-record sale is on file for 21 William Onthank Ln.
What is the current tax assessment for 21 William Onthank Ln?
The most recent total assessment for 21 William Onthank Ln (year 2025) is $470,400 with $6,496 in property tax.
When was 21 William Onthank Ln built?
21 William Onthank Ln was built in 1998.
How does 21 William Onthank Ln compare to others on William Onthank Ln?
We track 8 other properties on William Onthank Ln. Browse the list under "Other properties on William Onthank Ln" to compare beds, baths, and sale history.
What are the property facts for 21 William Onthank Ln?
21 William Onthank Ln is a 2 bed, 2 bath, 1,760 sqft condos.
Is 21 William Onthank Ln a flip candidate?
No — 21 William Onthank Ln does not appear in our flips dataset.
Is 21 William Onthank Ln a tax-appeal candidate?
No — 21 William Onthank Ln is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-1.5%
Implied 1-yr
-5.9%
2026 Q3
$895.8K
2026 Q4
$881.3K
ZIP 01772 — Median Price History + Forecast
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