400 E Putnam Ave, Greenwich, CT 06830
OFF MARKET

400 E Putnam Ave
Greenwich, CT 06830

Cos Cob
  • Studio
  • 590 sqft

$3,254,100

Trulia Estimate
as of Aug 14, 2026
Est. Refi. Payment $21,405/mo*
Refinance Your Home

$3,254,100

Trulia Estimate
as of Aug 14, 2026
Est. Refi. Payment $21,405/mo*
Refinance Your Home
Studio
590 sqft

Home Value

Trulia Estimate
$3.25M
Since last month
Increased$149K (+4.8%)
Since last year
Increased$545K (+20.1%)
Since last sale
Increased$2M (+160.2%)
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 +35% in the last 10 years
MonthEstimated value
2026
August 2026$3.25M
July 2026$3.5M
June 2026$3.1M
May 2026$3.08M
April 2026$2.93M
March 2026$2.99M
February 2026$3.35M
January 2026$3.31M
2025
2024
2023

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
8 River Ln, Cos Cob, CT
0.13
Single-Family Home
$1,400,000
03/19/26
2
2
1,666
24 Taylor Dr, Cos Cob, CT
0.28
Single-Family Home
$1,395,000
05/11/26
3
2
1,356
4 Mill Pond Ct, Cos Cob, CT
0.29
Single-Family Home
$1,424,800
02/13/26
3
1
1,416
3 Relay Ct, Cos Cob, CT
0.17
Single-Family Home
$775,000
05/08/26
2
1
941
4 Miami Ct, Cos Cob, CT
0.09
Single-Family Home
$1,885,000
03/20/26
4
3
1,785
17 Meadow Dr, Cos Cob, CT
0.35
Single-Family Home
$1,152,000
11/21/25
3
2
1,331
42 Mead Ave, Greenwich, CT
0.24
Single-Family Home
$1,125,000
11/21/25
3
2
1,833
42 Mead Ave, Cos Cob, CT
0.24
Single-Family Home
$1,125,000
11/20/25
3
2
1,833
48 River Rd, Cos Cob, CT
0.21
Single-Family Home
$1,000,000
11/18/25
3
2
1,641
15 Ridge Rd, Cos Cob, CT
0.31
Single-Family Home
$1,420,000
10/24/25
4
2
2,073

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
6 Robertson Lane #4, Cos Cob, CT 06807
0.07
$1,172,600
3
2.5
2,094
Off Market
6 Robertson Ln #7, Greenwich, CT 06807
0.07
$991,100
2
2.5
1,700
Off Market
453 E Putnam Ave #1L, Cos Cob, CT 06807
0.06
$957,100
2
2.5
1,464
Off Market
25 Valley Rd #25, Cos Cob, CT 06807
0.06
$1,611,100
4
3
1,768
Off Market
4 Miami Ct, Cos Cob, CT 06807
0.09
$1,885,000
4
3
1,785
Recently Sold
453 E Putnam Ave #4G, Cos Cob, CT 06807
0.08
$759,000
2
2
1,368
For Sale
453 E Putnam Ave #1E, Cos Cob, CT 06807
0.08
$1,134,400
2
2.5
1,464
Off Market
453 E Putnam Ave #1M, Cos Cob, CT 06807
0.08
$880,900
2
2.5
1,464
Off Market
453 E Putnam Ave #3I, Cos Cob, CT 06807
0.08
$988,400
2
2.5
1,464
Off Market
453 E Putnam Ave #1I, Cos Cob, CT 06807
0.08
$846,600
2
2.5
1,464
Off Market
24 Valley Rd, Cos Cob, CT 06807
0.09
$2,400,000
4
4.5
3,221
Recently Sold
453 East Putnam Avenue #4B, Greenwich, CT 06830
0.09
$850,000
2
2.5
1,464
Recently Sold

Local Information

  • Map ViewExplore the area around 400 E Putnam Ave.
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Home Highlights

Property Type
Single-Family Home
Year Built
1927
Living Area
590 sqft
Price/Sqft
$5,515

About this House

This single-family home is located at 400 E Putnam Ave, Greenwich, CT. 400 E Putnam Ave is in the Cos Cob neighborhood in Greenwich, CT and in ZIP code 06830. This property has approximately 590 sqft of floor space. This property has a lot size of 6969 sqft and was built in 1927.
400 E Putnam Ave, Greenwich, CT 06830 is a studio, 590 sqft single-family home in Cos Cob, built in 1927. It last sold for $1,250,000 on Jul 2, 2019. It is currently off market. The Trulia Estimate is $3,254,100, with a rent estimate of $3,061/month.

Home Details for 400 E Putnam Ave

Interior Features

Interior Details
BasementNumber of Rooms: 3
Levels, Entrance, & Accessibility
Stories: 2

Property Information

Year Built
Year Built: 1927
Property Type / Style
Property Type: Single Family Home

Exterior Features

Exterior Home Features
Deck
Parking & Garage
Parking: Off Street

Community

Units in Building: 2

Lot Information

Lot Area: 6969 sqft

Price and Tax history

DateEventPrice
Jul 2, 2019
Source: N/A
Sold
$1,250,000

Market trends in Greenwich

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$2.44M
$338KMoM
Sale-to-List Price
103.8%
1.1%MoM
Price per sq ft
$825
$24MoM
Available listings
182
8MoM
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Around this home

Neighborhood Overview

Cos Cob
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Cos Cob

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

Apartments for Rent

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Homes for sale near 400 E Putnam Ave

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Off Market Homes Near 400 E Putnam Ave

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Frequently asked questions about 400 E Putnam Ave

  • What is 400 E Putnam Ave estimated to be worth?
    Trulia's estimated value for 400 E Putnam Ave in Greenwich, CT is $3,254,100.
  • What is the price history for 400 E Putnam Ave?
    400 E Putnam Ave in Greenwich, CT last sold for $1,250,000 in July 2019.
  • Is Greenwich a buyer's or seller's market?
    Greenwich is currently a seller's market, based on recent for-sale activity.
  • What's the median sale price in Greenwich?
    The median sale price in Greenwich is $2.44M. That is up $338K from the prior month.
  • How big is the lot at 400 E Putnam Ave?
    The lot at 400 E Putnam Ave in Greenwich, CT is about 0.16 acres (6,969 sq ft).
  • Does 400 E Putnam Ave have parking?
    Yes, 400 E Putnam Ave in Greenwich, CT has on-site parking.