Skip main navigation
Sold for $2,550,000 on 09/09/25
  • $2,550,000

    523 E Putnam Ave #B, Cos Cob, CT 06807

    3beds
    3,251sqft
    Residential, Condominium
    Built in 2009
    -- sqft lot
    $2,580,700 Zestimate®
    $784/sqft
    $8,052 Estimated rent

    Owner options

    List your home for rent

    $8,052/mo

    Rent Zestimate®

    Find your next renter with Zillow Rental Manager. Plus, with online applications, you can quickly screen prospective tenants – for free.

    Learn more

    $8,052/mo

    Rent Zestimate®

    Refinance and save

    $17,438/mo

    Est. payment

    Refinancing to a lower rate could help reduce your monthly payments and save thousands over the life of the loan.

    See today's rates

    $17,438/mo

    Est. payment

    What's special

    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.

    Zillow last checked: 8 hours ago

    Listing updated: September 09, 2025 at 10:27am

    Listed by:

    Allen Vetrosky 203-981-8793,

    BHHS New England Properties

    Bought with:

    Stacey Delikat, RES.0816511

    Houlihan Lawrence

    Source: Greenwich MLS, Inc.,MLS#: 122613MLS Logo

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 3
    • Bathrooms: 4
    • Full bathrooms: 3
    • 1/2 bathrooms: 1
    Heating
    • Natural Gas, See Remarks, Hydro-Air
    Cooling
    • Central Air
    Appliances
    • Laundry: Laundry Room
    Features
    • Eat-in Kitchen, Elevator
    • Windows: Double Pane Windows
    • Has basement: Yes
    • Number of fireplaces: 2
    Interior area
    • Total structure area: 3,251
    • Total interior livable area: 3,251 sqft

    Property

    Parking
    • Total spaces: 3
    • Parking features: Garage Door Opener
    • Garage spaces: 3
    Features
    • Exterior features: Balcony
    • Has view: Yes
    • View description: Water
    • Has water view: Yes
    • Water view: Water
    Lot
    • Features: Backlot
    Details
    • Parcel number: 08A2021/S
    • Zoning: R-7

    Construction

    Type & style
    • Home type: Condo
    • Property subtype: Residential, Condominium
    Materials
    • Clapboard
    • Roof: Other
    Condition
    • Year built: 2009

    Utilities & green energy

    • Water: Public

    Community & neighborhood

    Location
    • Region: Cos Cob

    HOA & financial

    HOA
    • Has HOA: Yes
    • HOA fee: $3,066 monthly
    • Amenities included: None
    • Services included: Trash, Snow Removal, Maintenance Grounds
    • Second association name: Harbor House
    Sell with ease on Zillow
    Get a Zillow Showcase℠ listing at no additional cost and you could sell for .
    $2,580,700
    2% more+$51,614
    With Zillow Showcase(estimated)$2,632,314