Skip main navigation
Under contract
  • $2,495,000

    45 William St #B, Greenwich, CT 06830

    3beds
    3,376sqft
    : 
    Loading
    Get pre-qualified
    Residential, Condominium
    Built in 2005
    -- sqft lot
    $2,559,800 Zestimate®
    $739/sqft
    $-- HOA

    What's special

    Abundant natural lightGenerous room proportionsLarge eat-in kitchenThree spacious bedroomsEffortless indoor-outdoor flowGracious entertaining spacesPrivate rear lawn
    Townhouse Living in the Heart of Greenwich - Private Rear Lawn + 3,376 Sq Ft of Interior Space. A rare opportunity to own a beautifully scaled 3-bedroom, 3.5-bath townhome in one of downtown Greenwich's most charming and private enclaves. Set within a boutique six-residence association, 45 William Street #B is the largest residence in the community and the only one with its own private rear lawn - a 3,476-square-foot outdoor space that is exceptionally rare in central Greenwich. Inside, the home offers 3,376 square feet across three levels, blending the comfort and proportions of a townhouse with the ease of in-town living. The main level features gracious entertaining spaces, abundant natural light, a large eat-in kitchen, and seamless access to the rear lawn, creating an effortless indoor-outdoor flow for outdoor dining, entertaining, gardening, or simply enjoying private green space at home. Generous room proportions, three spacious bedrooms, three full baths plus a powder room, flexible living areas, and excellent separation of space provide comfort for everyday living, guests, and work-from-home needs. A private garage and additional deeded parking further enhance the home's convenience and livability. Ideally located just moments from Greenwich Avenue, shopping, dining, Metro-North, parks, and Greenwich Library, 45 William Street #B offers a truly uncommon combination of space, privacy, outdoor living, and close-to-town convenience.
    17 days
    |
    962
    |
    24
    |

    Zillow last checked:

    Listing updated:

    Listed by:

    Benjamin Cohen 203-249-1346,

    Coldwell Banker Realty

    Source: Greenwich MLS, Inc.,MLS#: 125073MLS Logo

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 3
      • Bathrooms: 4
      • Full bathrooms: 3
      • 1/2 bathrooms: 1
      Heating
      • Natural Gas, Hydro-Air
      Cooling
      • Central Air
      Appliances
      • Laundry: Laundry Room
      Features
      • Kitchen Island, Entrance Foyer, Sep Shower, Pantry, Wet Bar
      • Number of fireplaces: 1
      Interior area
      • Total structure area: 3,376
      • Total interior livable area: 3,376 sqft

      Property

      Parking
      • Total spaces: 2
      • Parking features: Assigned, Garage Door Opener
      • Garage spaces: 2
      Features
      • Has spa: Yes
      • Spa features: Bath
      Lot
      • Size: 0.28 Acres
      • Features: Level, Parklike
      Details
      • Additional structures: Shed(s)
      • Parcel number: 072706/S
      • Zoning: R-6

      Construction

      Type & style
      • Home type: Condo
      • Architectural style: Colonial
      • Property subtype: Residential, Condominium
      Materials
      • Shingle Siding
      • Roof: Asphalt
      Condition
      • Year built: 2005

      Utilities & green energy

      • Water: Public
      • Utilities for property: Cable Connected

      Community & HOA

      Community
      • Security: Security System
      HOA
      • Has HOA: Yes
      • Services included: Trash, Snow Removal, Maintenance Grounds
      • HOA name: Sir Williams Court
      Location
      • Region: Greenwich

      Financial & listing details

      • Price per square foot: $739/sqft
      • Tax assessed value: $1,271,200
      • Annual tax amount: $12,178
      • Date on market: 5/25/2026
      • Inclusions: Washer/Dryer, All Kitchen Applncs
      Get pre-qualifiedBe ready to make an offer.
      Connect with an agentGet info on this home, tour, and more.
      Calculate monthly paymentSee if you can afford this home.

        Estimated market value

        $2,559,800

        $2.43M - $2.69M

        $7,507/mo

        Price history

        DateEventPrice
        6/5/2026Contingent$2,495,000$739/sqft
        Source: Greenwich MLS, Inc. #125073 Report a problem
        5/25/2026Listed for sale$2,495,000+56.4%$739/sqft
        Source: Greenwich MLS, Inc. #125073 Report a problem
        6/7/2019Listing removed$1,595,000$472/sqft
        Source: Kinard Realty Group #170166339 Report a problem
        3/4/2019Listed for sale$1,595,000-3.3%$472/sqft
        Source: Kinard Realty Group #170166339 Report a problem
        11/30/2018Listing removed$1,650,000$489/sqft
        Source: Kinard Realty Group/Chilton and Chadwick #170082628 Report a problem
        11/6/2018Price change$1,650,000-2.7%$489/sqft
        Source: Kinard Realty Group #170082628 Report a problem
        9/19/2018Price change$1,695,000-3.1%$502/sqft
        Source: Kinard Realty Group #170082628 Report a problem
        5/10/2018Listed for sale$1,750,000+20.7%$518/sqft
        Source: Kinard Realty Group #170082628 Report a problem
        7/16/2009Sold$1,450,000-7.9%$430/sqft
        Source: Public Record Report a problem
        8/8/2006Sold$1,575,000+43.2%$467/sqft
        Source: Public Record Report a problem
        6/14/2006Sold$1,100,000$326/sqft
        Source: Public Record Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2025$10,128 +3.5%$819,490
        2024$9,781 +2.6%$819,490
        2023$9,536 +0.9%$819,490
        2022$9,449 +2%$819,490 +6.5%
        2021$9,261 +0.2%$769,160
        2020$9,245 -1%$769,160
        2019$9,338 +2.3%$769,160
        2018$9,130 +0.6%$769,160 +1.9%
        2017$9,075 +1.4%$755,020 +0%
        2015$8,953 +2%$754,740
        2014$8,774 $754,740

        Find assessor info on the county website

        Monthly payment

        Est. payment

          Payment breakdown

          Explore the cost of this home by adjusting the details. Changes won't be saved.
          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.
          Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
          See how much you could borrow to make a competitive offer.

          Climate risks

          Neighborhood: 06830

          Getting around

          89 / 100
          Very Walkable
          49 / 100
          Somewhat Bikeable

          Nearby schools

          GreatSchools rating
          Schools provided by the listing agent
          • Elementary: Julian Curtiss
          • Middle: Central

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

          A local agent can set up tours, give advice and negotiate with sellers.

          A local lender can help you make sure your offer is ready when you are.

          Browse local experts

          Similar homes

          Skip to the end of the carouselSkip to the beginning of the carousel