Office building with commercial space · Flatiron, Manhattan

109 Fifth Avenue

109 Fifth Avenue is a 13-floor office building with commercial space in Flatiron, Manhattan, built in 1895, with about 189,000 square feet of office space according to city records.

Office space
189K SF
Floors
13
Year built
1895
Listed on Leasemark
0

No space at 109 Fifth Avenue is listed on Leasemark yet. Own or broker space here? List it free and it is matched against every active requirement the day it goes up, or import a spreadsheet of up to 50 spaces at once.

NYC tax lot records

Building facts

Building type
Office building with commercial space (city class O6)
Total floor area
214,700 SF
Commercial floor area
214,700 SF
Office
189,151 SF
Retail
25,549 SF
Height
13 floors
Year built
1895
Last major alteration
2015
Lot area
19,600 SF
Zoning district
C6-4M
Built FAR
10.95
Max commercial FAR
10
Historic district
Ladies' Mile Historic District
Tax lot (BBL)
1008470001
ZIP code
10003

Nearby large buildings

Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-09-26. Floor areas are the city's estimates for the whole building, not available space. Walking times are straight-line estimates.

Office space nearby in Flatiron

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Questions about 109 Fifth Avenue

How big is 109 Fifth Avenue?

109 Fifth Avenue has about 215,000 square feet of floor area in total, including 189,000 square feet of office and 26,000 square feet of retail, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.

When was 109 Fifth Avenue built?

City records list 1895 as the year built, with a major alteration recorded in 2015. The building is 13 floors tall.

What is the zoning at 109 Fifth Avenue?

The lot is in the C6-4M zoning district. PLUTO lists a built floor area ratio (FAR) of 10.95 and a maximum commercial FAR of 10 for this lot. It is inside the Ladies' Mile Historic District, so exterior changes go through the Landmarks Preservation Commission.

Is there office space for lease at 109 Fifth Avenue?

No space at 109 Fifth Avenue is listed on Leasemark right now. Owners and brokers can list space here for free, and tenants can post a requirement to be matched when space opens up.