523 East Putnam Avenue #B, Greenwich, CT 06830
OFF MARKET

523 East Putnam Avenue #B
Greenwich, CT 06830

Cos Cob
  • 3 Beds
  • 3.5 Baths
  • 3,251 sqft

$2,711,400

Trulia Estimate
as of Aug 19, 2026
Est. Refi. Payment $17,776/mo*
Refinance Your Home

$2,711,400

Trulia Estimate
as of Aug 19, 2026
Est. Refi. Payment $17,776/mo*
Refinance Your Home
3 Beds
3.5 Baths
3,251 sqft

Home Value

Trulia Estimate
$2.71M
Since last month
Decreased$2K (-0.1%)
Since last year
Increased$22K (+0.8%)
Since last sale
Increased$158K (+6.2%)
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 +187% in the last 10 years
MonthEstimated value
2026
August 2026$2.71M
July 2026$2.71M
June 2026$2.7M
May 2026$2.67M
April 2026$2.62M
March 2026$2.61M
February 2026$2.62M
January 2026$2.57M
2025
2024
2023
2022
2021
2020
2019
2018

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
523 E Putnam Ave #B, Cos Cob, CT
0.01
Condo
$2,550,000
09/09/25
3
3.5
3,251
115 River Rd #7, Greenwich, CT
0.11
Condo
$1,625,000
05/06/26
3
2.5
2,185
24 Harold St #E, Cos Cob, CT
0.22
Condo
$1,660,000
03/09/26
4
3.5
2,736
44 Valley Rd #A, Cos Cob, CT
0.22
Condo
$1,580,000
11/21/25
4
3.5
2,632
453 E Putnam Ave #4B, Cos Cob, CT
0.09
Condo
$850,000
05/20/26
2
2.5
1,464
453 East Putnam Avenue #4B, Greenwich, CT
0.11
Condo
$850,000
05/20/26
2
2.5
1,464
24 Decatur St #2, Cos Cob, CT
0.33
Condo
$850,000
07/06/26
2
2.5
1,643
98 Valley Rd #12, Cos Cob, CT
0.30
Condo
$960,000
06/15/26
3
1.5
1,240
6 Caroline Farms Road #4, Greenwich, CT
0.56
Condo
$1,190,000
07/17/26
2
3.5
2,042

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
523 East Putnam Avenue #PH, Greenwich, CT 06830
0.02
$5,792,500
3
3.5
4,898
Off Market
523 E Putnam Ave #PENTHOUSE, Cos Cob, CT 06807
0.01
$4,143,600
3
3.5
4,347
Off Market
523 E Putnam Ave #B, Cos Cob, CT 06807
0.01
$2,711,400
3
3.5
3,251
Off Market
6 Nassau Pl #4, Greenwich, CT 06807
0.07
$931,800
3
1.5
1,554
Off Market
519 E Putnam Avenue, Cos Cob, CT 06807
0.06
$1,990,200
5
3
2,992
Off Market
47 Valley Rd #B3, Cos Cob, CT 06807
0.10
$465,500
2
0.5
800
Recently Sold
89 River Rd #305, Cos Cob, CT 06807
0.08
$1,694,200
2
2
1,230
Off Market
89 River Rd #201, Cos Cob, CT 06807
0.08
$1,765,500
2
2
1,240
Off Market
89 River Rd #303, Cos Cob, CT 06807
0.08
$1,518,400
2
2
1,184
Off Market
115 River Rd #7, Greenwich, CT 06807
0.11
$1,625,000
3
2.5
2,185
Recently Sold
115 River Rd #12, Greenwich, CT 06807
0.11
$1,714,100
3
2.5
1,926
Off Market

Local Information

  • Map ViewExplore the area around 523 East Putnam Avenue #B.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Condo
Year Built
2009
Living Area
3,251 sqft
Price/Sqft
$834
Parking
Garage
HOA
$3,066/Monthly

About this House

Space and convenience await you at this incredible townhouse with views of the Mianus River and a location close to Old Greenwich, Riverside and Cos Cob. This 3 bedroom, 3.5 bath home has high ceilings throughout, generously sized rooms and picture-perfect outdoor space. With 3 dedicated underground parking spaces and an elevator to take you to your living floor, this is as easy as it gets. The unit (one of only 3 in the building) offers high end finishes: coiffured ceilings, Viking appliances and his/her primary bathrooms & closets. With 3 sets of French doors giving access to outdoor spaces, you are never far from the calming water views of the river below. Gourmet kitchen and family room, as well as dining room, mud room and den flow seamlessly on the main level, along with the luxurious primary suite. The second floor offers 2 more en suite bedrooms. Access to the unit is gained from the main vestibule or from your own front door. And the outdoor fireplace on the patio overlooking the river a great place to end the day. 523 E Putnam B is not to be missed for those looking for easy living close to everything.
523 East Putnam Avenue #B, Greenwich, CT 06830 is a 3 bedroom, 4 bathroom, 3,251 sqft condo in Cos Cob, built in 2009. It last sold for $2,550,000 on Sep 9, 2025 (9% below the $2,800,000 asking price). More recently, it was listed as a rental in August 2020 with an asking price of $11,000 per month. That rental listing was removed on October 30, 2020. It is currently off market. The Trulia Estimate is $2,711,400, with a rent estimate of $7,969/month.
Last check for updates: about 5 hours ago
Listed by Allen Vetrosky, (203) 981-8793
Berkshire Hathaway NE Prop., (203) 869-0500
Bought with: Stacey Delikat, (203) 249-4595, Houlihan Lawrence, (203) 869-0700
Source: Smart MLS, MLS#24090034

Home Details for 523 East Putnam Avenue #B

Interior Features

Interior Details
Basement: FullNumber of Rooms: 7Types of Rooms: Master Bedroom, Bedroom, Master Bathroom, Bathroom, Dining Room, Family Room, Kitchen, Living Room
Beds & Baths
Number of Bedrooms: 3Number of Bathrooms: 4Number of Bathrooms (full): 3Number of Bathrooms (half): 1
Dimensions and Layout
Living Area: 3251 Square Feet
Appliances & Utilities
Appliances: Gas Cooktop, Oven, Microwave, Range Hood, Refrigerator, Freezer, Dishwasher, Washer, Dryer, Wine Cooler, Water HeaterDishwasherDryerLaundry: Main Level,Upper Level,Mud RoomMicrowaveRefrigeratorWasher
Heating & Cooling
Heating: Forced Air,Zoned,Natural GasHas CoolingAir Conditioning: Central Air,ZonedHas HeatingHeating Fuel: Forced Air
Fireplace & Spa
Number of Fireplaces: 1Has a Fireplace
Windows, Doors, Floors & Walls
Common Walls: End Unit
Levels, Entrance, & Accessibility
Stories: 2Elevator
View
Has a ViewView: Water
Security
Security: Security System

Exterior Features

Exterior Home Features
Patio / Porch: PatioExterior: Balcony, Stone WallNo Private Pool
Parking & Garage
Number of Garage Spaces: 3Number of Covered Spaces: 3No CarportHas a GarageNo Attached GarageParking Spaces: 3Parking: Garage,Garage Door Opener
Frontage
Waterfront: Walk to WaterNot on Waterfront
Water & Sewer
Sewer: Public Sewer
Finished Area
Finished Area (above surface): 3251 Square Feet

Property Information

Year Built
Year Built: 2009
Property Type / Style
Property Type: ResidentialProperty Subtype: Condominium, TownhouseStructure Type: TownhouseArchitecture: Townhouse
Building
Building Name: Harbor House AssociationConstruction Materials: ClapboardNot a New ConstructionAttached To Another StructureDoes Not Include Home Warranty
Property Information
Not Included in Sale: Light pendants above kitchen island as well as mudroom light fixtureParcel Number: 2679016

Price & Status

Price
List Price: $2,800,000
Status Change & Dates
Off Market Date: Fri Aug 08 2025Possession Timing: 6/1/25

Active Status

MLS Status: Closed

Location

Direction & Address
City: GreenwichCommunity: Cos Cob
School Information
Elementary School: Cos CobJr High / Middle School: CentralHigh School: Greenwich

Agent Information

Buyer Agent
Buyer Company Name: The Metalios Team at Houlihan Lawrence

Building

Building Area
Building Area: 3251 Square Feet

Community

Community Features: Near Public Transport, Golf, Library, Medical Facilities, Park, Private School(s), Public Rec Facilities

HOA

HOA Fee Includes: Maintenance Grounds, Trash, Snow Removal, Pest Control, InsuranceHas an HOAHOA Fee: $3,066/Monthly

Miscellaneous

BasementMls Number: 24090034Attic: NoneWater ViewWater View: WaterAbove Grade Unfinished Area: 3251

Additional Information

HOA Amenities: Elevator(s),Management

Price and Tax history

DateEventPrice
Sep 9, 2025
Source: Smart MLS #24090034
Sold
$2,550,000
Aug 8, 2025
Source: Smart MLS #24090034
Pending
$2,800,000
May 30, 2025
Source: Smart MLS #24090034
PriceChange
$2,800,000
Price decreased by 10%
Apr 30, 2025
Source: Smart MLS #24090034
Listed For Sale
$3,095,000
Oct 30, 2020
Source: Agent Provided
ListingRemoved
$12,000

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

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

IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.

Frequently asked questions about 523 East Putnam Avenue #B

  • What is 523 East Putnam Avenue #B estimated to be worth?
    Trulia's estimated value for 523 East Putnam Avenue #B in Greenwich, CT is $2,711,400.
  • What is the price history for 523 East Putnam Avenue #B?
    523 East Putnam Avenue #B in Greenwich, CT last sold for $2,550,000 in September 2025.
  • 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.
  • Does 523 East Putnam Avenue #B have air conditioning?
    Yes, 523 East Putnam Avenue #B in Greenwich, CT has air conditioning.
  • Does 523 East Putnam Avenue #B have laundry facilities?
    Yes, 523 East Putnam Avenue #B in Greenwich, CT has in-unit laundry.

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