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21 South William Street #D5

$875,000

For Sale

Delisted 11/4/2025

738 ft²

$1,185 per ft²

3 rooms

1 bed

1 bath

Condo
Financial District
Resale

Seller's agents

Mark O'Brien

Licensed Real Estate Broker

Mark O'Brien Development LLC

Brian Worthman

Licensed Associate Real Estate Broker

Mark O'Brien Development LLC

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Listing by Mark O'Brien Development LLC, Limited Liability Broker, 94 Bank Street, New York, NY 10014

Common charges

$1,326/mo

Estimated payment

$6,493/mo

Taxes

$592/mo

Tax abatement

No info

About

Seller’s agent

Mark O'Brien

Licensed Real Estate Broker

Mark O'Brien Development LLC

Brian Worthman

Licensed Associate Real Estate Broker

Mark O'Brien Development LLC

description

Discover urban living at its finest in the heart of the Financial District at the Block Hall Condominiums.

Boasting 10' ceilings and oversized windows this spacious corner apartment invites natural light to illuminate every corner. Step out onto the Juliette balcony and soak in the stunning South/West views, offering a picturesque backdrop to your city lifestyle.

Policies

Pets allowed
Cats and dogs allowed

Home features

Central air
Dishwasher
Hardwood floors
Private outdoor space
Balcony
View
City, Park, Water
Washer/dryer

Building amenities

Services and facilities

Doorman
Virtual
Elevator
Laundry in building

Wellness and recreation

Shared outdoor space

Roof deck

About the building

Block Hall

21 South William Street, New York, NY 10004

Condo building inFinancial District

31 units

8 stories

1900 built

For sale

0 available units for sale

For rent

1 available units for rent

Documents and permits

View documents and permits

Learn more about Block Hall

Property history

Price Change: ↓ $25,000 (-2.8%) on 10/2/25
Days on market: 29 days

Date	Price	Event
11/4/2025	$875,000	Delisted by Mark O'Brien Development LLC
10/24/2025	$875,000	In contract
10/2/2025	$875,000	Price decreased by 3%
9/25/2025	$900,000	Listed by Mark O'Brien Development LLC

Explore Financial District

Transit

Location	Distance
JZat Broad St	0.11 miles
RW1at Whitehall St	0.13 miles
23at Wall St	0.15 miles
45at Bowling Green	0.15 miles
45at Wall St	0.21 miles

View transit on Google Maps

View on Google Maps

About Financial District

Rental prices shown are base rent before any fees. Visit listings for cost and fees breakdown.

SalesMedian asking price

1 bed

$950K

RentalsMedian asking base rent

1 bed

$5,004

During the day, the Financial District can be chaotic with an influx of office workers and tourists attracted to the many historical sites, museums, and phenomenal views the neighborhood offers. After the workday crowds clear, the neighborhood becomes quiet and calm. Nightlife is confined to a few small areas, as most residents return to their amenity-rich buildings and rooftop patios.

Learn more about Financial District