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343 Madison Avenue

Floor/Suite: 

Entire 8-9 & 40-44

Size: 

19,693 – 27,487 RSF

Lease type:

Direct

Multiple floors available:

  • Entire 8th Floor - 27,462 SF
  • Entire 9th Floor - 27,465 SF
  • Floors 40-43 - 21,738 SF each
  • Entire 44th Floor - 19,693 SF
  • Tenant must lease a minimum of 2 floors
  • Private terraces: Floors 2, 16, 18, 31 & 44
  • Slab heights: 14’–16’ (up to 22’ on select specialty floors)
  • 343 Madison Avenue (343 Madison Avenue)
  • Madison Avenue by Grand Central Terminal
  • Owned by: BXP
  • Class: A
  • 950,000 Total RSF
  • 46 floors
  • Amenities: Roof deck / Terrace, Newly-renovated lobby, Bike Room, Conference Center, On-site Restaurant, Tenant Lounge

Building Details

343 Madison Avenue is a Class A office building at 343 Madison Avenue in the Grand Central submarket. The address gives tenants a Midtown East base with proximity to Grand Central Terminal, client-meeting destinations, hotels, and the broader East Midtown business corridor.

Published building profiles describe 46 stories, approximately 950000 square feet. Design lineage is associated with Kohn Pedersen Fox (KPF). That combination supports users comparing full-floor identity, multi-suite layouts, and efficient Midtown footprints without defaulting to a trophy-tower premium for every requirement.

343 Madison Avenue is planned as a new Class A office tower steps from Grand Central Terminal, designed around next-generation Midtown workplace needs. The all-electric tower is designed with landscaped setbacks, wide column-free office floors, floor-to-ceiling glass, and an amenity level with co-working, conference, lounge, dining, and outdoor spaces. The project includes public-realm improvements, a wider Madison Avenue sidewalk, a direct Grand Central Madison connection, and an extensive below-grade pedestrian network. From a workplace standpoint, the property is positioned for practical daily operations—arrival experience, vertical circulation, and suite configuration options that can adapt as headcount changes. Building and workplace features noted for tenants include All-electric building systems, Amenity level with co-working and conference areas, Indoor and outdoor dining, Column-free floor plates, Floor-to-ceiling glass, Direct Grand Central Madison connection.

Grand Central Terminal, Grand Central Madison, the below-grade pedestrian network, subway service, commuter rail, and Madison Avenue bus routes are central to the building location. Those connections matter for hybrid schedules, regional talent, and frequent client visits across Midtown East.

For tenants evaluating Grand Central options, 343 Madison Avenue pairs a clear street identity with transit adjacency and a Class A occupancy profile. Contact Noah & Co. to review current suites, compare nearby alternatives, and plan tours around your timing and layout requirements.

Noah Co. does not exclusively represent the space or building listed above.

As of 11-11-2026