Flatiron District, Manhattan, NY Office Spaces for Rent

Find the best Flatiron District, Manhattan, NY office space among 101 for rent listings currently on the market.

37 Union Square West

37 Union Square West, Flatiron District, New York, NY
Property

Office

4,792 SF
Availability

2 Spaces

9,075 SF
Year Built

1921
For Lease Contact for pricing
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53-55 West 21st Street

55 West 21st Street, Flatiron District, New York, NY
Property

Office

24,174 SF
Availability

2 Spaces

10,000 SF
For Lease Contact for pricing
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125 Fifth Avenue

125 Fifth Avenue, Flatiron District, New York, NY
Property

Office

1,500 SF
Availability

1 Space

1,500 SF
For Lease Contact for pricing
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123 5th Ave

123 5th Ave, Flatiron District, New York, NY
Property

Office

10,442 SF
Availability Contact for availability
Year Built

1915
For Lease Contact for pricing
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900 Broadway

900 Broadway, Flatiron District, New York, NY
Property

Office

115,000 SF
Availability

1 Space

4,000 SF
Year Built

1887
For Lease Contact for pricing
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29 W 17th St

29 W 17th St, Flatiron District, New York, NY
Property

Retail

25,000 SF
Availability

2 Spaces

5,000 SF
Year Built

1915
For Lease Contact for pricing
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841 Broadway | Roosevelt Building

841 Broadway, Flatiron District, New York, NY
Property

Office

91,367 SF
Availability Contact for availability

For Lease Contact for pricing
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3 West 18th Street

3 West 18th Street, Flatiron District, New York, NY
Property

Office

34,360 SF
Availability Contact for availability
Year Built

1896
For Lease Contact for pricing
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5 West 20th Street

5 West 20th Street, Flatiron District, New York, NY
Property

Office

10,940 SF
Availability

1 Space

2,576 SF
For Lease Contact for pricing
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28 W 23rd Street

28 W 23rd St, Flatiron District, New York, NY
Property

Office
Availability

1 Space

66,000 SF
For Lease Contact for pricing
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54 West 21st Street

54 West 21st Street, Flatiron District, New York, NY
Property

Office

153,806 SF
Availability Contact for availability
Year Built

1910
For Lease Contact for pricing
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Flatiron District, Manhattan, NY Office Inventory Breakdown

There are a number of factors that make a city attractive for businesses to relocate or expand, as well as for investors to enhance their portfolios through local acquisitions. Among the most important factors to consider are the size and quality of the local office market, which is an essential component of the local economy.

Total Office Space in Manhattan: 12,819,148 Sq. Ft.

In 2025 the Manhattan office market encompassed 12,819,148 square feet of space. Out of that total, 1,882,602 square feet were in office properties sized between 500,000 and 1,000,000 square feet. Meanwhile, 1,789,058 square feet were in office buildings sized between 50,000 and 100,000 square feet.
Class A office space makes up a 12.99% share of Manhattan office inventory, while Class B office assets represent roughly 83.1% of the market total.

Manhattan Office Market Breakdown by Building Size
Building Size Range	Total Square Feet	Share of Total Office
50k to 100k Sq. Ft.	1,789,058 Sq. Ft.	13.96%
100k to 500k Sq. Ft.	8,360,717 Sq. Ft.	65.22%
500k to 1M Sq. Ft.	1,882,602 Sq. Ft.	14.69%

Manhattan Office Market Breakdown by Building Quality Rating
Class	Total Square Feet	Share of Total Office
Class A	1,665,679 Sq. Ft.	12.99%
Class B	10,652,821 Sq. Ft.	83.1%
Class C	500,648 Sq. Ft.	3.91%

Data was provided by CommercialEdge, refers to properties larger than 50,000 square feet.

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Flatiron District, Manhattan, NY Office Spaces for Rent

37 Union Square West

53-55 West 21st Street

125 Fifth Avenue

123 5th Ave

900 Broadway

29 W 17th St

841 Broadway | Roosevelt Building

3 West 18th Street

5 West 20th Street

28 W 23rd Street

54 West 21st Street

Flatiron District, Manhattan, NY Office Inventory Breakdown

Total Office Space in Manhattan: 12,819,148 Sq. Ft.

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