517 Putnam Ave
Cos Cob, CT 06807
5 bd 3 ba 2,995 sqft Built 1978 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 | $224,770 | $593,530 | $818,300 | $10,113 |
| 2023 | $224,770 | $593,530 | $818,300 | $9,522 |
| 2022 | $308,910 | $593,530 | $902,440 | $10,405 |
| 2021 | $321,230 | $395,360 | $716,590 | $8,628 |
| 2020 | $321,230 | $395,360 | $716,590 | $8,613 |
| 2019 | $321,230 | $395,360 | $716,590 | $8,699 |
| 2018 | $321,230 | $395,360 | $716,590 | $8,506 |
| 2017 | $321,230 | $395,360 | $716,590 | $8,613 |
| 2016 | $321,230 | $395,360 | $716,590 | $8,477 |
| 2015 | $135,170 | $574,560 | $709,730 | $8,420 |
| 2013 | $135,170 | $574,560 | $709,730 | $8,027 |
| 2006 | $154,350 | $564,970 | $719,320 | $5,647 |
| 2004 | $168,350 | $454,650 | $623,000 | $7,270 |
| 2003 | $168,350 | $454,650 | $623,000 | $7,034 |
Property facts
Year built
1978
Property type
single_family
Stories
1
Beds
5
Baths
3
Living area
2,995 sqft
Lot size
—
ZIP code
06807
City
Cos Cob
Street
Putnam Ave
Coordinates
41.03742, -73.60719
Comparable properties nearby
Frequently asked questions
When did 517 Putnam Ave last sell?
No public-record sale is on file for 517 Putnam Ave.
What is the current tax assessment for 517 Putnam Ave?
The most recent total assessment for 517 Putnam Ave (year 2025) is $818,300 with $10,113 in property tax.
When was 517 Putnam Ave built?
517 Putnam Ave was built in 1978.
How does 517 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 517 Putnam Ave?
517 Putnam Ave is a 5 bed, 3 bath, 2,995 sqft single_family.
Is 517 Putnam Ave a flip candidate?
No — 517 Putnam Ave does not appear in our flips dataset.
Is 517 Putnam Ave a tax-appeal candidate?
No — 517 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