Under Construction
343 Madison Ave
New York City · Office
Designed by Kohn Pedersen Fox and developed by BXP, the 844-foot-tall tower will bring 950,000 square feet of office space and a collection of tenant amenities.
Official WebsiteLast verified Jun 6, 2026
3.6 yrs to delivery
43%
AnnouncedBreaking GroundConstructionOpening SoonNow Open
07.29.25
Start
2029
Completion
49
Floors
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The story so far
Broke groundJul 29, 2025
Tenant announcedApr 2026Anchor tenant C.V. Starr joined by law firm McDermott Will & Schulte on office leases
therealdeal.comUnder construction
Expected opening2029
Milestones are dated to when they actually happened and linked to their source. This record fills in over time as TMW tracks the project.
Developer & design