Want · Office
Series B fintech needs 8,000 to 12,000 SF
Posted by the tenant · Fintech
- Where
- Midtown South, Flatiron +1
- Size
- 8,000 to 12,000 SF
- Budget
- to $85/SF
- Move in
- Jan 2027
Near subwayHigh ceilings
Owners: got a fit?I have a fit
Office building · Flatiron, Manhattan
171 Fifth Avenue
171 Fifth Avenue is a 21-floor office building in Flatiron, Manhattan, built in 1903, with about 175,000 square feet of office space according to city records.
- Office space
- 175K SF
- Floors
- 21
- Year built
- 1903
- Listed on Leasemark
- 0
No space at 171 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 (city class O4)
- Total floor area
- 183,449 SF
- Commercial floor area
- 183,449 SF
- Office
- 174,500 SF
- Retail
- 8,949 SF
- Height
- 21 floors
- Year built
- 1903
- Last major alteration
- 1990
- Lot area
- 8,650 SF
- Zoning district
- C6-4M
- Built FAR
- 21.21
- Max commercial FAR
- 10
- Historic district
- Ladies' Mile Historic District
- Landmark status
- Individual landmark
- Tax lot (BBL)
- 1008510001
- ZIP code
- 10010
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.
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Want · Office
Startup seeking furnished sublease
Posted by the tenant · Software
- Where
- Flatiron, Midtown South +1
- Size
- 6,000 to 11,000 SF
- Budget
- to $60/SF
- Move in
- Nov 2026
Furnished
Owners: got a fit?I have a fit
Questions about 171 Fifth Avenue
How big is 171 Fifth Avenue?
171 Fifth Avenue has about 183,000 square feet of floor area in total, including 175,000 square feet of office and 9,000 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 171 Fifth Avenue built?
City records list 1903 as the year built, with a major alteration recorded in 1990. The building is 21 floors tall. The lot carries a city landmark designation (individual landmark).
What is the zoning at 171 Fifth Avenue?
The lot is in the C6-4M zoning district. PLUTO lists a built floor area ratio (FAR) of 21.21 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 171 Fifth Avenue?
No space at 171 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.
Flatiron
Getting there
- N R W at 23 St
- 4 5 6 L N Q R W at 14 St-Union Sq
- F M at 23 St