23 Shannon Ln
Cos Cob, CT 06807
5 bd 4 ba 3,088 sqft Built 1978 Lot 87,120 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 | $315,420 | $492,800 | $808,220 | $9,731 |
| 2023 | $315,420 | $492,800 | $808,220 | $9,206 |
| 2022 | $315,420 | $492,800 | $808,220 | $9,117 |
| 2021 | $412,230 | $448,000 | $860,230 | $9,970 |
| 2020 | $412,230 | $448,000 | $860,230 | $9,970 |
| 2019 | $420,840 | $448,000 | $868,840 | $10,148 |
| 2018 | $420,840 | $448,000 | $868,840 | $9,879 |
| 2017 | $420,840 | $448,000 | $868,840 | $9,879 |
| 2016 | $420,840 | $448,000 | $868,840 | $9,731 |
| 2015 | $278,740 | $704,760 | $983,500 | $11,084 |
| 2013 | $278,740 | $704,760 | $983,500 | $10,504 |
| 2006 | $293,160 | $938,210 | $1,231,370 | $9,235 |
| 2004 | $334,880 | $366,940 | $701,820 | $7,804 |
| 2003 | $334,880 | $366,940 | $701,820 | $7,545 |
Property facts
Year built
1978
Property type
single_family
Stories
2
Beds
5
Baths
4
Living area
3,088 sqft
Lot size
87,120 sqft
ZIP code
06807
City
Cos Cob
Street
Shannon Ln
Coordinates
41.08099, -73.59112
Comparable properties nearby
Frequently asked questions
When did 23 Shannon Ln last sell?
No public-record sale is on file for 23 Shannon Ln.
What is the current tax assessment for 23 Shannon Ln?
The most recent total assessment for 23 Shannon Ln (year 2025) is $808,220 with $9,731 in property tax.
When was 23 Shannon Ln built?
23 Shannon Ln was built in 1978.
How does 23 Shannon Ln compare to others on Shannon Ln?
We do not currently track other properties on Shannon Ln.
What are the property facts for 23 Shannon Ln?
23 Shannon Ln is a 5 bed, 4 bath, 3,088 sqft, 87,120 sqft lot single_family.
Is 23 Shannon Ln a flip candidate?
No — 23 Shannon Ln does not appear in our flips dataset.
Is 23 Shannon Ln a tax-appeal candidate?
No — 23 Shannon 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
+4.5%
Implied 1-yr
+17.8%
2025 Q4
$2.1M
2026 Q1
$2.17M
ZIP 06807 — Median Price History + Forecast
Explore nearby
Geography