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For sale
  • $6,150,000

    21 Calhoun Dr, Greenwich, CT 06831

    5beds
    6,143sqft
    : 
    $40,171/mo
    Get pre-qualified
    Residential, Single Family Residence
    Built in 1923
    1.8 Acres Lot
    $6,098,800 Zestimate®
    $1,001/sqft
    $133/mo HOA

    What's special

    Indoor poolDistinctive architectural detailsExpansive groundsComfortable everyday living spacesEstablished landscapingGracious entertaining roomsNewly renovated kitchen
    A rare opportunity in one of Greenwich's most coveted in-town settings, 21 Calhoun Drive combines the timeless presence and character of a classic Greenwich estate with exceptional privacy, generous scale and remarkable potential. Set amid mature landscaping on approximately 1.8 acres in a one-acre zone, the property offers nearly twice the typical lot size while remaining just moments from the heart of Greenwich. Inside, gracious entertaining rooms, comfortable everyday living spaces and distinctive architectural details create a home with warmth, character and a sense of permanence rarely replicated today. A newly renovated kitchen brings a fresh, modern sensibility to the residence and serves as a beautiful centerpiece for daily living and entertaining. A private wellness retreat complete with an indoor pool and dedicated fitness space, brings resort-style amenities into the comfort and privacy of home. Beyond the main residence, the expansive grounds offer an exceptional opportunity to further enhance the estate. Fully permitted plans provide the option to add a guest house, along with the potential for a pickleball or tennis court an increasingly rare offering this close to town. With its substantial acreage, established landscaping, private wellness amenities and extraordinary flexibility for the future, this is a unique opportunity to enjoy a private estate setting without sacrificing the convenience of in-town Greenwich living.
    31 days
    4,324
    257

    Zillow last checked:

    Listing updated:

    Listed by:

    Danielle Malloy 203-921-9987,

    Serhant Connecticut LLC

    Source: Greenwich MLS, Inc.,MLS#: 125808MLS Logo

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 5
      • Bathrooms: 8
      • Full bathrooms: 6
      • 1/2 bathrooms: 2
      Heating
      • Natural Gas, Combination
      Cooling
      • Central Air
      Appliances
      • Laundry: Laundry Room
      Features
      • Kitchen Island, Back Stairs
      • Basement: Partially Finished
      • Number of fireplaces: 6
      Interior area
      • Total structure area: 6,143
      • Total interior livable area: 6,143 sqft

      Property

      Parking
      • Total spaces: 3
      • Parking features: Garage Door Opener
      • Garage spaces: 3
      Features
      • Patio & porch: Terrace
      • Has private pool: Yes
      • Has spa: Yes
      • Spa features: Heated
      Lot
      • Size: 1.8 Acres
      • Features: Parklike
      Details
      • Parcel number: 072043
      • Zoning: RA-1
      • Other equipment: Generator

      Construction

      Type & style
      • Home type: SingleFamily
      • Architectural style: English Manor
      • Property subtype: Residential, Single Family Residence
      Materials
      • Brick, Stucco
      • Roof: Slate,Shingle
      Condition
      • Antique
      • New construction: No
      • Year built: 1923
      • Major remodel year: 2025

      Utilities & green energy

      • Sewer: Septic Tank
      • Water: Public
      • Utilities for property: Cable Connected

      Community & HOA

      Community
      • Security: Security System
      HOA
      • Has HOA: Yes
      • HOA fee: $1,600 annually
      • HOA name: Calhoun Drive
      Location
      • Region: Greenwich

      Financial & listing details

      • Price per square foot: $1,001/sqft
      • Tax assessed value: $2,431,590
      • Annual tax amount: $29,276
      • Date on market: 9/9/2026
      • Inclusions: Washer/Dryer, All Kitchen Applncs

        Estimated market value

        $6,098,800

        $5.79M - $6.40M

        Not available

        Price history

        DateEventPrice
        9/9/2026Listed for sale$6,150,000-1.6%$1,001/sqft
        Source: Smart MLS #24205524 Report a problem
        8/1/2026Listing removed$6,250,000$1,017/sqft
        Source: Greenwich MLS, Inc. #122588 Report a problem
        5/22/2026Listed for sale$6,250,000$1,017/sqft
        Source: Greenwich MLS, Inc. #122588 Report a problem
        5/13/2026Listing removed$6,250,000$1,017/sqft
        Source: Greenwich MLS, Inc. #122588 Report a problem
        5/7/2026Price change$6,250,000-2.3%$1,017/sqft
        Source: Greenwich MLS, Inc. #122588 Report a problem
        3/24/2026Price change$6,395,000-1.6%$1,041/sqft
        Source: Greenwich MLS, Inc. #122588 Report a problem
        11/15/2025Listed for sale$6,500,000-4.4%$1,058/sqft
        Source: Greenwich MLS, Inc. #122588 Report a problem
        4/26/2025Listed for sale$6,800,000+24627.3%$1,107/sqft
        Source: Greenwich MLS, Inc. #122588 Report a problem
        2/3/2022Listing removed--
        Source: Zillow Rental Manager Report a problem
        12/10/2021Listed for rent$27,000-6.9%$4/sqft
        Source: Zillow Rental Manager Report a problem
        4/17/2021Listing removed--
        Source: Greenwich MLS, Inc. Report a problem
        4/2/2021Listed for rent$29,000+16%$5/sqft
        Source: Greenwich MLS, Inc. #112637 Report a problem
        2/28/2021Listing removed--
        Source: Owner Report a problem
        8/15/2020Listing removed$25,000$4/sqft
        Source: New England Land Company, Ltd. #H6055992 Report a problem
        8/3/2020Sold$27,500-99.3%$4/sqft
        Source: Agent Provided Report a problem
        4/8/2020Listed for rent$25,000$4/sqft
        Source: Owner Report a problem
        3/15/2019Sold$3,800,000-4.9%$619/sqft
        Source: Greenwich MLS, Inc. #103071 Report a problem
        9/5/2018Price change$3,995,000-11.1%$650/sqft
        Source: Sotheby's International Realty - Greenwich Brokerage #103071 Report a problem
        4/3/2018Listed for sale$4,495,000+191.5%$732/sqft
        Source: Sotheby's International Realty - Greenwich Brokerage #98603 Report a problem
        7/3/1990Sold$1,542,000$251/sqft
        Source: Public Record Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2025$29,276 +2.8%$2,431,590
        2024$28,474 +2.8%$2,431,590
        2023$27,696 +1%$2,431,590
        2022$27,428 -13%$2,431,590 -10.7%
        2021$31,542 $2,721,460
        2020$31,542 +0.8%$2,721,460 +1.6%
        2019$31,287 +2.7%$2,678,690
        2018$30,457 -3%$2,678,690 -3%
        2017$31,408 +1.5%$2,762,340
        2016$30,938 $2,762,340
        Find assessor info on the county website

        Monthly payment

        Est. payment

        Payment breakdown

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        All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
        HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
        See how much you could borrow to make a competitive offer.

        Climate risks

        Neighborhood: Rock Ridge

        Getting around

        10 / 100
        Car-Dependent
        21 / 100
        Somewhat Bikeable

        Nearby schools

        GreatSchools rating
        Schools provided by the listing agent
        • Elementary: Glenville
        • Middle: Western

        Source: Greenwich MLS, Inc.. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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