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 with commercial space · Flatiron, Manhattan
15 West 21st Street
15 West 21st Street is a 12-floor office building with commercial space in Flatiron, Manhattan, built in 1910, with about 117,000 square feet of office space according to city records.
- Office space
- 117K SF
- Floors
- 12
- Year built
- 1910
- Listed on Leasemark
- 0
No space at 15 West 21st Street 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
- 137,007 SF
- Commercial floor area
- 137,007 SF
- Office
- 117,007 SF
- Retail
- 20,000 SF
- Height
- 12 floors
- Year built
- 1910
- Last major alteration
- 1989
- Lot area
- 11,200 SF
- Zoning district
- C6-4A
- Built FAR
- 12.23
- Max commercial FAR
- 10
- Historic district
- Ladies' Mile Historic District
- Tax lot (BBL)
- 1008230029
- 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 15 West 21st Street
How big is 15 West 21st Street?
15 West 21st Street has about 137,000 square feet of floor area in total, including 117,000 square feet of office and 20,000 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 15 West 21st Street built?
City records list 1910 as the year built, with a major alteration recorded in 1989. The building is 12 floors tall.
What is the zoning at 15 West 21st Street?
The lot is in the C6-4A zoning district. PLUTO lists a built floor area ratio (FAR) of 12.23 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 15 West 21st Street?
No space at 15 West 21st Street 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