Want · Office
Law firm relocation near Grand Central
Posted by a tenant rep broker · Legal
- Where
- Grand Central, Midtown
- Size
- 7,000 to 10,000 SF
- Budget
- to $110/SF
- Move in
- May 2027
24/7 accessADA accessible
Owners: got a fit?I have a fit
Office building · Midtown, Manhattan
645 Madison Avenue
645 Madison Avenue is a 22-floor office building in Midtown, Manhattan, built in 1971, with about 131,000 square feet of office space according to city records.
- Office space
- 131K SF
- Floors
- 22
- Year built
- 1971
- Listed on Leasemark
- 0
No space at 645 Madison 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
- 164,615 SF
- Commercial floor area
- 164,615 SF
- Office
- 130,918 SF
- Retail
- 33,697 SF
- Height
- 22 floors
- Year built
- 1971
- Lot area
- 9,038 SF
- Zoning district
- C5-3
- Built FAR
- 18.21
- Max commercial FAR
- 15
- Tax lot (BBL)
- 1013740049
- ZIP code
- 10022
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 Midtown
Looking for office space in Midtown
Tenants and buyers with active requirements here. List a space in 645 Madison Avenue and we match you automatically.
Want · Office
Hedge fund, Hudson Yards or Plaza
Posted by a tenant rep broker · Finance
- Where
- Hudson Yards, Midtown
- Size
- 15,000 to 22,000 SF
- Budget
- to $140/SF
- Move in
- Jul 2027
24/7 access
Owners: got a fit?I have a fit
Questions about 645 Madison Avenue
How big is 645 Madison Avenue?
645 Madison Avenue has about 165,000 square feet of floor area in total, including 131,000 square feet of office and 34,000 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 645 Madison Avenue built?
City records list 1971 as the year built. The building is 22 floors tall.
What is the zoning at 645 Madison Avenue?
The lot is in the C5-3 zoning district. PLUTO lists a built floor area ratio (FAR) of 18.21 and a maximum commercial FAR of 15 for this lot.
Is there office space for lease at 645 Madison Avenue?
No space at 645 Madison 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.
Getting there
- B D F M at 42 St-Bryant Pk
- 7 at 5 Av
- N Q R W at Times Sq