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 · Midtown South, Manhattan
243 Fifth Avenue
243 Fifth Avenue is a 24-floor office building in Midtown South, Manhattan, built in 1927, with about 248,000 square feet of office space according to city records.
- Office space
- 248K SF
- Floors
- 24
- Year built
- 1927
- Listed on Leasemark
- 0
No space at 243 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
- 258,639 SF
- Commercial floor area
- 258,639 SF
- Office
- 247,639 SF
- Retail
- 11,000 SF
- Height
- 24 floors
- Year built
- 1927
- Last major alteration
- 2011
- Lot area
- 11,100 SF
- Zoning district
- C5-2
- Built FAR
- 23.3
- Max commercial FAR
- 10
- Historic district
- Madison Square North Historic District
- Tax lot (BBL)
- 1008570076
- ZIP code
- 10016
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 243 Fifth Avenue
How big is 243 Fifth Avenue?
243 Fifth Avenue has about 259,000 square feet of floor area in total, including 248,000 square feet of office and 11,000 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 243 Fifth Avenue built?
City records list 1927 as the year built, with a major alteration recorded in 2011. The building is 24 floors tall.
What is the zoning at 243 Fifth Avenue?
The lot is in the C5-2 zoning district. PLUTO lists a built floor area ratio (FAR) of 23.3 and a maximum commercial FAR of 10 for this lot. It is inside the Madison Square North Historic District, so exterior changes go through the Landmarks Preservation Commission.
Is there office space for lease at 243 Fifth Avenue?
No space at 243 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.
Midtown South
Getting there
- N R W at 28 St
- 6 at 28 St
- F M at 23 St