Castle Hook Partners Signed Lease at 625 Madison Avenue
The firm secured the penthouse floors in the New York City tower for a 15-year term.
Updated on Sept. 28, 2026 in Commercial
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Castle Hook Partners has officially leased the 52nd and 53rd floors at 625 Madison Avenue. A memorandum of the 15-year lease was filed in city records on Monday.
Why it matters
The signing signals continued high-end leasing activity at the 53-story tower, which is currently attracting prominent financial firms to its upper floors.
The penthouse occupies the 52nd and 53rd floors of the 53-story development, where upper-floor asking rents have reached $400 per square foot. The agreement includes a 10-year renewal option following the initial 15-year term.
The players
Castle Hook Partners
This investment firm is the new tenant at 625 Madison Avenue and is moving from its current headquarters at 767 Fifth Avenue.
Related Companies
This major real estate developer is responsible for the construction and leasing of the 53-story tower at 625 Madison Avenue.
General Atlantic
This investment firm previously committed to 152,000 square feet of office space within the same development.
Veritas Capital
This firm secured 92,743 square feet of space at the 625 Madison Avenue tower.
The details
The lease agreement was signed by Philippe Visser on behalf of the developer, Related Companies, and David Rogers for Castle Hook Partners. The firm is currently headquartered at 767 Fifth Avenue.
Timeline
Mid-September 2026: The lease agreement was finalized.
September 28, 2026: The memorandum of lease was filed in city records.
Roadmap
This deal underscores the persistent demand for premium office space in Midtown Manhattan as firms prioritize newer, amenity-rich buildings. The success of this 53-story tower reflects a broader trend of high-end commercial flight to quality across the city.
The relocation of Castle Hook Partners to 625 Madison Avenue signifies a shift in the local business landscape as top-tier tenants cluster within the tower. The potential arrival of new retail concepts like Polo Bar may further increase foot traffic in the immediate vicinity.
The takeaway
The move by Castle Hook Partners highlights that premium office towers in central locations continue to command high rents despite broader market fluctuations. Tenants looking for prime space should monitor these major commercial developments for shifts in availability and pricing.
Further reading
For more information on the local market, visit the New York City Commercial section.
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