21 Siwanoy Ln
New Canaan, CT 06840
5 bd 4 ba 4,455 sqft Built 1964 Lot 45,302 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 | $792,400 | $560,000 | $1,352,400 | $22,572 |
| 2023 | $288,470 | $505,050 | $793,520 | $15,029 |
| 2022 | $288,470 | $505,050 | $793,520 | $14,577 |
| 2021 | $288,470 | $505,050 | $793,520 | $14,410 |
| 2020 | $288,470 | $505,050 | $793,520 | $14,410 |
| 2019 | $288,470 | $505,050 | $793,520 | $14,474 |
| 2018 | $396,340 | $467,670 | $864,010 | $15,213 |
| 2017 | $396,340 | $467,670 | $864,010 | $14,938 |
| 2016 | $396,340 | $467,670 | $864,010 | $14,598 |
| 2015 | $396,340 | $467,670 | $864,010 | $14,310 |
| 2013 | $242,690 | $462,840 | $705,530 | $10,740 |
| 2006 | $303,000 | $398,400 | $701,400 | $10,297 |
| 2005 | $303,000 | $398,400 | $701,400 | $9,813 |
| 2004 | $303,000 | $398,400 | $701,400 | $9,280 |
| 2003 | $212,800 | $459,550 | $672,350 | $9,406 |
Property facts
Year built
1964
Property type
single_family
Stories
2
Beds
5
Baths
4
Living area
4,455 sqft
Lot size
45,302 sqft
ZIP code
06840
City
New Canaan
Street
Siwanoy Ln
Coordinates
41.15917, -73.49837
Comparable properties nearby
Frequently asked questions
When did 21 Siwanoy Ln last sell?
No public-record sale is on file for 21 Siwanoy Ln.
What is the current tax assessment for 21 Siwanoy Ln?
The most recent total assessment for 21 Siwanoy Ln (year 2025) is $1,352,400 with $22,572 in property tax.
When was 21 Siwanoy Ln built?
21 Siwanoy Ln was built in 1964.
How does 21 Siwanoy Ln compare to others on Siwanoy Ln?
We track 3 other properties on Siwanoy Ln. Browse the list under "Other properties on Siwanoy Ln" to compare beds, baths, and sale history.
What are the property facts for 21 Siwanoy Ln?
21 Siwanoy Ln is a 5 bed, 4 bath, 4,455 sqft, 45,302 sqft lot single_family.
Is 21 Siwanoy Ln a flip candidate?
No — 21 Siwanoy Ln does not appear in our flips dataset.
Is 21 Siwanoy Ln a tax-appeal candidate?
No — 21 Siwanoy 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
-0.2%
Implied 1-yr
-0.8%
2026 Q3
$2.61M
2026 Q4
$2.61M
ZIP 06840 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Siwanoy Ln