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Block Hall,
21 South William Street
Condo located in Financial District, between Broad Street & Hanover Square
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- Recent Sales (6)
- All Units in Building (31)
Overview of Block Hall at 21 South William Street
21 South William Street was built in 1927 and converted to condos in 2005. Block Hall has a total of 31 apartments and is located in the Financial District, very close to the J, Z, 1, 2, 3, R, 4 and 5 subway lines.
Amenities at this pre war building include fitness center, rooftop terrace, concierge and central ac.
Similar nearby buildings include 16 Warren Street, 42 Allen Street and 100 Norfolk Street.
Year Built
1927
Converted:
2005
Apartments
31
Floors
7
Neighborhood
Financial District (Manhattan)
Min Down
20%
31Apartments
View All Past
Sales & Rentals
in Building
Sales & Rentals
in Building
Amenities
- Concierge
- Pre War
- Central AC
- Rooftop Terrace
- Elevator
- Fitness Center
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Nearby Subways
- J
- Z
- 1
- R
- 4
- 5
- 2
- 3
- A
- C
Carter’s Review
"This 7-story, Tudor-style building at 21-23 South William Street was converted to a residential condominium in 2005.
The building was acquired in early 2004 for about $4.5 million by the Kennelly Development Company from the Block Hall Development Company. The 25,000-sq. ft. building had been owned since 1967 by John Herzog, who in 1988 founded the Museum of American Financial History."
Read Full Review
The building was acquired in early 2004 for about $4.5 million by the Kennelly Development Company from the Block Hall Development Company. The 25,000-sq. ft. building had been owned since 1967 by John Herzog, who in 1988 founded the Museum of American Financial History."
Read Full Review
Sales History
View Full Closing HistorySales Summary
View Summary by Apartment SizeSales History by Apartment Size
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Pricing Comparison of Similar Buildings
View Detailed ComparisonEditorial Coverage
- Ahead of Museum Day, see listings near prominent cultural institutions Friday, September 16, 2022
- Rare Bargains: Manhattan One-Bedrooms Under $1 Million with Tax Abatements Thursday, June 21, 2018
- Design of condo tower planned at 303 East 51st Street changing Wednesday, December 19, 2007
- 21 South William Street is converted to 31 condos Tuesday, November 8, 2005
- Block Hall progress Tuesday, July 5, 2005
Alternate Addresses
- 21 s -23 william st
- 21 s william st
- 21 south william street
- 21-23 South William Street
- 2123 s william st
- 23 s william st
- 45 Stone Street
- 45-47 Stone Street
- 47 Stone Street
at The Northeast corner of East 86th Street
Carnegie Hill
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RLS IDX Data display by CityRealty.com, LLC.
This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2024 The Real Estate Board of New York, Inc., All rights reserved.
IDX information is provided exclusively for consumers’ personal, non-commercial use and it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer and for no listing shall the number of bedrooms listed be considered a legal conclusion.
All closed sales data has been provided by the New York City Department of Finance via the Automated City Register Information System (ACRIS). No warranty or representation is made as to the accuracy of any data provided by ACRIS or any other sources.
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All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer and for no listing shall the number of bedrooms listed be considered a legal conclusion.
All closed sales data has been provided by the New York City Department of Finance via the Automated City Register Information System (ACRIS). No warranty or representation is made as to the accuracy of any data provided by ACRIS or any other sources.
CityRealty is committed to ensuring digital accessibility for individuals with disabilities. We are continuously working to improve the accessibility of our web experience for everyone, and we welcome feedback and accommodation requests. If you wish to report an issue or seek an accommodation, please contact us at accessibility@cityrealty.com.
An equal housing opportunity 
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