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
Office building · Financial District, Manhattan
1 William Street
1 William Street is a 12-floor office building in Financial District, Manhattan, built in 1907, with about 105,000 square feet of office space according to city records.
- Office space
- 105K SF
- Floors
- 12
- Year built
- 1907
- Listed on Leasemark
- 0
No space at 1 William 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 (city class O3)
- Total floor area
- 105,000 SF
- Commercial floor area
- 105,000 SF
- Office
- 105,000 SF
- Height
- 12 floors
- Year built
- 1907
- Last major alteration
- 1983
- Lot area
- 8,409 SF
- Zoning district
- C5-5
- Built FAR
- 12.49
- Max commercial FAR
- 15
- Landmark status
- Individual landmark
- Tax lot (BBL)
- 1000290036
- ZIP code
- 10004
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 Financial District
Looking for office space in Financial District
Tenants and buyers with active requirements here. List a space in 1 William Street and we match you automatically.
Questions about 1 William Street
How big is 1 William Street?
1 William Street has about 105,000 square feet of floor area in total, including 105,000 square feet of office, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.
When was 1 William Street built?
City records list 1907 as the year built, with a major alteration recorded in 1983. The building is 12 floors tall. The lot carries a city landmark designation (individual landmark).
What is the zoning at 1 William Street?
The lot is in the C5-5 zoning district. PLUTO lists a built floor area ratio (FAR) of 12.49 and a maximum commercial FAR of 15 for this lot.
Is there office space for lease at 1 William Street?
No space at 1 William 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.
Financial District
Getting there
- 2 3 4 5 at Wall St
- A C J Z at Fulton St
- PATH at World Trade Center