525 E  Putnam Ave, Cos Cob, CT 06830
OFF MARKET

$3,803,100

Trulia Estimate
  • Studio
  • 4,057 sqft

525 E Putnam Ave, Cos Cob, CT 06830

Cos Cob
Currently Off Market - Sold Feb 9, 2009 for $1,600,000

Home Value

Trulia Estimate
$3.8M
Since last month
Decreased$322K (-7.8%)
Since last year
Increased$271K (+7.7%)
Since last sale
Increased$2M (+137.6%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +23% in the last 10 years
MonthEstimated value
2026
October 2026$3.8M
September 2026$4.12M
August 2026$4.05M
July 2026$4.02M
June 2026$3.95M
May 2026$3.97M
April 2026$3.88M
March 2026$3.97M
February 2026$3.93M
January 2026$3.71M
2025

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
0.17
Single-Family Home
$1,530,000
08/17/26
4
3
2,720
0.16
Single-Family Home
$2,400,000
02/25/26
4
4.5
3,221
0.25
Single-Family Home
$2,022,000
06/22/26
4
2.5
2,126
0.31
Single-Family Home
$3,150,000
12/19/25
4
3.5
4,600
0.31
Single-Family Home
$2,250,000
04/03/26
4
3.5
2,641
0.37
Single-Family Home
$1,995,000
10/21/25
5
4.5
2,775
0.17
Single-Family Home
$1,400,000
03/19/26
2
2
1,666
0.38
Single-Family Home
$3,175,000
09/21/26
5
4.5
4,332
0.36
Single-Family Home
$2,700,000
08/26/26
4
4
3,492
0.44
Single-Family Home
$1,975,000
03/06/26
5
4
3,260

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
0.02
$1,396,600
Studio
-
-
Off Market
0.03
$500,900
2
1
600
Off Market
0.03
$5,535,300
3
3.5
4,898
Off Market
0.03
-
-
-
-
Off Market
0.03
-
-
-
-
Off Market
0.03
$1,732,700
5
4
2,376
Off Market
0.03
$4,290,400
3
3.5
4,347
Off Market
0.03
$2,718,900
3
3.5
3,251
Off Market
0.03
-
-
-
-
Off Market
0.03
-
-
-
-
Off Market
0.03
-
-
-
-
Off Market
0.03
$1,655,800
4
3
2,240
Off Market
0.04
$916,200
3
1.5
1,554
Off Market
0.04
$1,686,200
3
4
2,759
Off Market
0.04
$1,914,500
3
4
2,283
Off Market
0.04
$1,710,400
4
2.5
2,296
Off Market
0.04
$2,728,800
3
3.5
3,251
Off Market
0.04
$659,000
2
1
920
Off Market
0.04
$943,600
3
3
1,578
Off Market
0.04
$847,400
3
2
1,358
Off Market

Local Information

  • Map ViewExplore the area around 525 E Putnam Ave.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Single-Family Home
Built in 1945
4,057 sqft
$937/sqft
Garage

About this House

This single-family home is located at 525 E Putnam Ave, Cos Cob, CT. 525 E Putnam Ave is in the Cos Cob neighborhood in Cos Cob, CT and in ZIP code 06830. This property has approximately 4,057 sqft of floor space. This property has a lot size of 9583 sqft and was built in 1945.
525 E Putnam Ave, Cos Cob, CT 06830 is a studio, 4,057 sqft single-family home in Cos Cob, built in 1945. It last sold for $1,600,000 on Feb 9, 2009. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $3,803,100.

Home Details for 525 E Putnam Ave

Interior Features

Interior Details
BasementNumber of Rooms: 4
Levels, Entrance, & Accessibility
Stories: 3

Exterior Features

Exterior Home Features
Roof: Shake ShingleDeck
Parking & Garage
GarageParking: Garage Detached

Property Information

Year Built
Year Built: 1945
Property Type / Style
Property Type: Single Family Home

Community

Units in Building: 2

Lot Information

Lot Area: 9583 sqft

Price and Tax history

DateEventPrice
Feb 9, 2009
Source: N/A
Sold
$1,600,000
Apr 27, 1998
Source: N/A
Sold
$15,000

Market trends in Greenwich

Last updated September 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$2.75M
$168K
MoM
Sale-to-List Price
103.2%
1.6%
MoM
Price per sq ft
$807
$18
MoM
Available listings
183
29
MoM
Sourced by Trulia Market Trends

Neighborhood Overview

Neighborhood stats provided by third party data sources.

What Locals Say about Cos Cob

This October

Trick-or-Treat Score

Built from what locals say about Cos Cob.
  • 100% say neighbors are friendly
  • 100% say there are community events
  • 100% say there's holiday spirit
Trulia Trick or TreatStart Ghost Hunt
At least 1 Trulia users voted on each feature.
  • 100 % Say neighbors are friendly

  • 100 % Say there are community events

  • 100 % Say there's holiday spirit

  • 100 % Say it's walkable to grocery stores

  • 100 % Say it's walkable to restaurants

  • 100 % Say parking is easy

  • 100 % Say car is needed

  • 100 % Say streets are well-lit

  • 100 % Say it's dog friendly

Sourced by Trulia users. Learn more about our methodology.

LGBTQ Local Legal Protections

Frequently asked questions about 525 E Putnam Ave

  • What is 525 E Putnam Ave estimated to be worth?
    Trulia's estimated value for 525 E Putnam Ave in Cos Cob, CT is $3,803,100.
  • What is the price history for 525 E Putnam Ave?
    525 E Putnam Ave in Cos Cob, CT last sold for $1,600,000 in February 2009.
  • Is Cos Cob a buyer's or seller's market?
    Cos Cob is currently a seller's market, based on recent for-sale activity.
  • What's the median sale price in Cos Cob?
    The median sale price in Cos Cob is $2.75M. That is up $168K from the prior month.
  • How big is the lot at 525 E Putnam Ave?
    The lot at 525 E Putnam Ave in Cos Cob, CT is about 0.22 acres (9,583 sq ft).
  • Does 525 E Putnam Ave have a garage?
    Yes, 525 E Putnam Ave in Cos Cob, CT has a garage.

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