523 Putnam Ave
Cos Cob, CT 06807
2 bd 2 ba 2,566 sqft Built 2009 condo
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 | $1,198,400 | — | $1,198,400 | $14,811 |
| 2023 | $1,198,400 | — | $1,198,400 | $13,945 |
| 2022 | $1,198,400 | — | $1,198,400 | $13,818 |
| 2021 | $1,318,240 | — | $1,318,240 | $15,872 |
| 2020 | $1,318,240 | — | $1,318,240 | $15,845 |
| 2019 | $1,318,240 | — | $1,318,240 | $16,003 |
| 2018 | $1,318,240 | — | $1,318,240 | $15,648 |
| 2017 | $2,551,430 | $419,860 | $2,971,290 | $35,712 |
| 2016 | $2,551,430 | $419,860 | $2,971,290 | $35,147 |
| 2015 | $1,810,130 | $534,310 | $2,344,440 | $27,812 |
| 2013 | $1,810,130 | $534,310 | $2,344,440 | $26,516 |
| 2004 | $149,940 | $195,160 | $345,100 | $4,027 |
| 2003 | $142,380 | $195,160 | $337,540 | $3,811 |
Property facts
Year built
2009
Property type
condo
Stories
1
Beds
2
Baths
2
Living area
2,566 sqft
Lot size
—
ZIP code
06807
City
Cos Cob
Street
Putnam Ave
Coordinates
41.04087, -73.59211
Comparable properties nearby
Frequently asked questions
When did 523 Putnam Ave last sell?
No public-record sale is on file for 523 Putnam Ave.
What is the current tax assessment for 523 Putnam Ave?
The most recent total assessment for 523 Putnam Ave (year 2025) is $1,198,400 with $14,811 in property tax.
When was 523 Putnam Ave built?
523 Putnam Ave was built in 2009.
How does 523 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 523 Putnam Ave?
523 Putnam Ave is a 2 bed, 2 bath, 2,566 sqft condo.
Is 523 Putnam Ave a flip candidate?
No — 523 Putnam Ave does not appear in our flips dataset.
Is 523 Putnam Ave a tax-appeal candidate?
No — 523 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