523 E Putnam Ave #PENTHOUSE
Cos Cob, CT 06807
Cos Cob
3 Beds
3.5 Baths
4,347 sqft
3 Beds
3.5 Baths
4,347 sqft
Local Information
© Google
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Description
Captain's view: modern one floor living in high end complex. Luxurious penthouse with views of the harbor. Award winning architect and developer have created elegant living spaces with soaring ceilings,great attention to detail and high end amenities. Three bedrooms including grand master suite with his & her baths and giant walk in closet,private balcony, gourmet eat-in kitchen, library, family room off kitchen, elevator from heated garage, mudroom and pantry, private garden with sunken terrace and large outdoor deck. Three car garage. Large assigned storage facility for outdoor furniture, bikes, kayaks, suitcases etc. in lower level. Sophisticated living at its best. Protected and set high up overlooking the harbor.
This property is off market, which means it's not currently listed for sale or rent on Trulia. This may be different from what's available on other websites or public sources. This description is from August 27, 2024
Home Highlights
Parking
Garage
Outdoor
Deck
A/C
Heating & Cooling
HOA
None
Price/Sqft
No Info
Listed
180+ days ago
Home Details for 523 E Putnam Ave #PENTHOUSE
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Interior Details Basement: Partial |
Beds & Baths Number of Bedrooms: 3Number of Bathrooms: 4Number of Bathrooms (full): 3Number of Bathrooms (half): 1 |
Dimensions and Layout Living Area: 4347 Square Feet |
Appliances & Utilities Laundry: Laundry Room |
Heating & Cooling Heating: Natural Gas,Forced AirHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Natural Gas |
Fireplace & Spa Number of Fireplaces: 1Spa: BathHas a FireplaceHas a Spa |
Levels, Entrance, & Accessibility Elevator |
Security Security: Security System |
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Exterior Home Features Roof: OtherPatio / Porch: Terrace, DeckNo Private Pool |
Parking & Garage Number of Garage Spaces: 3Number of Covered Spaces: 3Has a GarageParking Spaces: 3Parking: Assigned |
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Year Built Year Built: 2011 |
Property Type / Style Property Type: ResidentialProperty Subtype: Residential, Condominium |
Building Construction Materials: Clapboard |
Property Information Included in Sale: Washer/Dryer, All Kitchen ApplncsParcel Number: 082614/S |
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Price List Price: $2,995,000 |
Status Change & Dates Off Market Date: Tue Nov 01 2016 |
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MLS Status: Closed |
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Direction & Address City: Cos Cob |
School Information Elementary School: Cos CobJr High / Middle School: Central |
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Building Area Building Area: 4347 Square Feet |
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HOA Fee Includes: Snow Removal, Maintenance GroundsHOA Name (second): Harbor HouseHas an HOA |
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Mobile Home Park Mobile Home Units: Feet |
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BasementMls Number: 96973 |
Last check for updates: about 2 hours ago
Listed by Barbara Wells, (203) 912-5644
Houlihan Lawrence
Bought with: Allen Vetrosky, (203) 981-8793, BHHS New England Properties
Source: Greenwich MLS, Inc., MLS#96973
Price History for 523 E Putnam Ave #PENTHOUSE
| Date | Price | Event | Source |
|---|---|---|---|
| 11/03/2016 | $2,800,000 | Sold | Greenwich MLS, Inc. #96973 |
Market trends in Greenwich
Last updated April 2026
Avg. sale price
$2.02M $51.67KMoM
Sale-to-List Price
100.2% 0.1%MoM
Price per sq ft
$797 $11MoM
Available listings
191 45MoM
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Comparable Sales for 523 E Putnam Ave #PENTHOUSE
Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.00 | Condo | $2,550,000 | 09/09/25 | 3 | 3.5 | 3,251 | |
0.01 | Condo | $2,550,000 | 09/09/25 | 3 | 3.5 | 3,251 | |
0.11 | Condo | $1,625,000 | 05/06/26 | 3 | 2.5 | 2,185 | |
0.22 | Condo | $1,660,000 | 03/09/26 | 4 | 3.5 | 2,736 | |
0.22 | Condo | $1,580,000 | 11/21/25 | 4 | 3.5 | 2,632 | |
0.22 | Condo | $1,100,000 | 07/16/25 | 3 | 3.5 | 1,958 | |
0.09 | Condo | $850,000 | 05/20/26 | 2 | 2.5 | 1,464 | |
0.11 | Condo | $850,000 | 05/20/26 | 2 | 2.5 | 1,464 | |
0.08 | Condo | $1,425,000 | 07/17/25 | 2 | 2 | 1,184 | |
0.11 | Condo | $795,000 | 08/07/25 | 2 | 2.5 | 1,464 |
Nearby homes
Get a sense of prices in the area by checking nearby homes.
OFF MARKETHoulihan Lawrence
SOLDSEP 9, 2025BHHS New England Properties
SOLDSEP 9, 2025Berkshire Hathaway NE Prop.
OFF MARKETThe Relocation Group, LLC
SOLDDEC 1, 2025Mike Parelli Real Estate LLC
OFF MARKETCompass Connecticut, LLC
OFF MARKETCompass Connecticut, LLC
OFF MARKETCompass Connecticut, LLC- OFF MARKETCompass Connecticut, LLC
OFF MARKETCompass Connecticut, LLC
Assigned Schools
These are the assigned schools for 523 E Putnam Ave #PENTHOUSE.
- Central Middle School
- 6-8
- Public
- 506 Students
8/10GreatSchools RatingParent Rating AverageThis school is very unsafe! we had to evacuate from an earthquake that was 40 miles away a few years ago because they thought it would fall down. (Most people didn't even notice the 1 second of slight shaking) 1 star. Cracks in the building too.Student Review7mo ago - Cos Cob School
- PK-5
- Public
- 337 Students
6/10GreatSchools RatingParent Rating AverageWonderful teachers and safe environment. Good building with plenty of land behind where the kids can play. new Adequate staff ao the school is fairly well resourced. My daughter did very well academically and it has carried forward into Central middle school. Good parental engagement especially when it domes to the annual fund raiser / carnival. Friendly place and your kids will love it here. I strongly recommend this schoolParent Review3y ago - Greenwich High School
- 9-12
- Public
- 2668 Students
10/10GreatSchools RatingParent Rating AverageThis school has no support for children who struggle. The school pass these kids through for good ratings. Poor preparation for college. Guidance counselor was unsupportive and not helpful. I do not recommend this school.Parent Review1y ago 
Check out schools near 523 E Putnam Ave #PENTHOUSE.
Neighborhood Overview
Neighborhood stats provided by third party data sources.
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APPLY INSTANTLYPET FRIENDLYFURNISHED
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APPLY INSTANTLYPET FRIENDLYFURNISHED
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Homes for sale near 523 E Putnam Ave #PENTHOUSE
Century 21 AllPoints Realty
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Off Market Homes Near 523 E Putnam Ave #PENTHOUSE
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SOLDJUN 1, 2026Brown Harris Stevens Connecticut, LLC
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SOLDMAY 29, 2026Sotheby's International Realty- See more homes for sale inCos Cob
Listing data courtesy of Greenwich MLS. IDX information is provided exclusively for consumers’ personal, non-commercial use, that it may not be used for any purpose other than to
identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by the MLS.
Homes for rent near 523 E Putnam Ave #PENTHOUSE
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523 E Putnam Ave #PENTHOUSE, Cos Cob, CT 06807 is a 3 bedroom, 4 bathroom, 4,347 sqft condo built in 2011. 523 E Putnam Ave #PENTHOUSE is located in Cos Cob, Cos Cob. This property is not currently available for sale. 523 E Putnam Ave #PENTHOUSE was last sold on Nov 3, 2016 for $2,800,000 (7% lower than the asking price of $2,995,000). The current Trulia Estimate for 523 E Putnam Ave #PENTHOUSE is $4,149,900.