100 Putnam Ave
Cos Cob, CT 06807
— ba 40,120 sqft Built 2024 Lot 33,977 sqft other
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 | $5,965,190 | $2,568,790 | $8,533,980 | $105,471 |
| 2023 | $1,233,330 | $2,568,790 | $3,802,120 | $44,241 |
| 2022 | $1,233,330 | $2,568,790 | $3,802,120 | $43,838 |
| 2021 | $696,640 | $2,183,440 | $2,880,080 | $34,676 |
| 2020 | $696,640 | $2,183,440 | $2,880,080 | $34,619 |
| 2019 | $696,640 | $2,183,440 | $2,880,080 | $34,964 |
| 2018 | $696,640 | $2,183,440 | $2,880,080 | $34,187 |
| 2017 | $696,640 | $2,183,440 | $2,880,080 | $34,616 |
| 2016 | $696,640 | $2,183,440 | $2,880,080 | $34,068 |
| 2015 | $691,110 | $2,355,430 | $3,046,540 | $36,141 |
| 2013 | $691,110 | $2,355,430 | $3,046,540 | $34,456 |
| 2006 | $512,330 | $3,020,360 | $3,532,690 | $27,732 |
| 2004 | $227,850 | $1,752,170 | $1,980,020 | $23,107 |
| 2003 | $227,850 | $1,752,170 | $1,980,020 | $22,354 |
Property facts
Year built
2024
Property type
other
Stories
3
Beds
—
Baths
—
Living area
40,120 sqft
Lot size
33,977 sqft
ZIP code
06807
City
Cos Cob
Street
Putnam Ave
Coordinates
41.03729, -73.60189
Frequently asked questions
When did 100 Putnam Ave last sell?
No public-record sale is on file for 100 Putnam Ave.
What is the current tax assessment for 100 Putnam Ave?
The most recent total assessment for 100 Putnam Ave (year 2025) is $8,533,980 with $105,471 in property tax.
When was 100 Putnam Ave built?
100 Putnam Ave was built in 2024.
How does 100 Putnam Ave compare to others on Putnam Ave?
We track 8 other properties on Putnam Ave. Browse the list under "Other properties on Putnam Ave" to compare beds, baths, and sale history.
What are the property facts for 100 Putnam Ave?
100 Putnam Ave is a — bath, 40,120 sqft, 33,977 sqft lot other.
Is 100 Putnam Ave a flip candidate?
No — 100 Putnam Ave does not appear in our flips dataset.
Is 100 Putnam Ave a tax-appeal candidate?
No — 100 Putnam Ave 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
Other properties on Putnam Ave