Date
Details
Price
Change
Source
5/25/2026
Listed
$2,495,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
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1/23
$2,495,000 Just Listed
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1/23
Property Description
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.
Full Property Details
Full Property Details for 45 William St #B
General
- Price: $2,495,000
- HOA FEE: $976
- Taxes: $12,178
- Status: Active
- Type: Condo
- Source: Greenwich
- MLS ID: 125073
- Updated: 5/26/2026
- Added to Site: 2 day(s) ago
Interior
- Interior Features: Kitchen Island, Entrance Foyer, Sep Shower, Whirlpool Tub, Pantry, Wet Bar
- Number of Fireplaces: 1
Rooms
Bathrooms
- Total Bathrooms: 4
- Full Bathrooms: 3
- Half Bathrooms: 1
Bedrooms
- Total Bedrooms: 3
Other Rooms
- Laundry: Laundry Room
Additional Information
- Security/Safety: Security System
Parking
- Garage: Yes
- Garage Spaces: 2
Location
- Area: 3 - Greenwich
- County: Fairfield
- Driving Directions: Church Street, turn onto William Street. The driveway entrance is located between the two homes. Unit B is tucked privately toward the rear of the property, down the driveway
School Information
- Elementary School: Julian Curtiss
- Middle School: Central
Community
- Association: Yes
- Home Owners Assn.: Sir Williams Court
Heating & Cooling
- Central air: Yes
- Air Conditioning: Yes
- Cooling Type: Central Air
- Heating Type: Natural Gas, Hydro-Air
- Heating Fuel: Gas
- Water Heater: Gas
Utilities
- Gas: Public Utility
- Sewer: Town Sewer
- Water: Public
- Utility Description: Cable Connected
Structural Information
- Architectural Style: Colonial
- Construction: Shingle Siding
- Basement Desc.: Crawl Space
- Roof: Asphalt
- Square Feet: 3,376
- Sq. Ft. Source: Taxcard
- Year Built: 2005
Additional Structures
- Other Structures: Shed(s)
Lot Features
- Lot Size (Acres): 0.28
- Lot Size (Sq. Ft.): 12,196.8
- Irrigation System: Sprinkler System
- Lot Features: Level, Parklike
- Zoning: R-6
- Lot Description: Park, Level
Financial Considerations
- Price Per Sq. Ft.: $739.04
- Association Fee: $976
- Condo Fee: $976
- Tax Amount: $12,178
Disclosures and Reports
- Exclusions: Call LB
- Inclusions: Washer/Dryer, All Kitchen Applncs
- Property ID: 07-2706/S
Buyer's Brokerage Compensation: Contact Listing Agent
Not binding unless confirmed by separate agreement among applicable parties.
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Schools
Schools serving 45 William St #B
School District:Greenwich School District
| Name | Grades | Distance |
|---|---|---|
Julian Curtiss School 180 East Elm Street, Greenwich, CT 06830 | PK-5 | 0.5 mi |
Central Middle School 9 Indian Rock Lane, Greenwich, CT 06830 | 6-8 | 1.5 mi |
Greenwich High School 10 Hillside Road, Greenwich, CT 06830 | 9-12 | 0.8 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 45 William St #B
Tax History
Tax History for 45 William St #B
Year
Property Taxes
Change
Tax Assessment
Change
2025
$10,128
4%
$819,490
—
2023
$9,781
3%
$819,490
—
2023
$9,536
1%
$819,490
—
2022
$9,449
2%
$819,490
7%
2021
$9,261
—
$769,160
—
2020
$9,245
-1%
$769,160
—
2019
$9,338
2%
$769,160
—
2018
$9,130
1%
$769,160
2%
2017
$9,075
2%
$755,020
—
2016
$8,931
—
$755,020
—
2015
$8,953
2%
$754,740
—
2014
$8,774
-7%
$754,740
-10%
2013
$9,485
—
$838,600
—
2011
$9,485
—
$838,600
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 45 William St #B
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- Updated 1 day ago
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- Updated 22 hours ago
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- 4Total Baths
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- Single Family
- Active
- Updated 1 day ago
- 3Beds
- 1Total Bath
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- Condo
- Closed
- 3Beds
- 3Total Baths
- 2,444Sq. Ft.
Listed and Sold by Non Mls
- Condo
- Closed
- 2Beds
- 3Total Baths
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Listed by Sotheby's International Realty
Sold by Houlihan Lawrence
Sold by Houlihan Lawrence
- Single Family
- Closed
- 4Beds
- 5Total Baths
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Listed by William Raveis Real Estate
Sold by Houlihan Lawrence
Sold by Houlihan Lawrence
- Single Family
- Closed
- 5Beds
- 4Total Baths
- 3,424Sq. Ft.
Listed by Houlihan Lawrence
Sold by Sotheby's International Realty
Sold by Sotheby's International Realty
45 William Street #B, Greenwich, CT 06830 (MLS# 125073) is a Condo property with 3 bedrooms, 3 full bathrooms and 1 partial bathroom. 45 William Street #B is currently listed for $2,495,000 and was received on May 25, 2026. This property is listed by Ben Cohen from our Greenwich Office.Want to learn more about 45 William Street #B? Do you have questions about finding other Condo real estate for sale in Greenwich? You can browse all Greenwich real estate or contact a Coldwell Banker agent to request more information.