635/641 Avenue of the Americas, New York, NY

635/641 Avenue of the Americas is conveniently located in the heart of Chelsea between 19th and 20th Streets. Once home to the Simpson Crawford Department Store, the buildings have recently been redeveloped into a Class "A" office building featuring a brand new lobby, elevators, state-of-the-art building systems and a one-of-a-kind penthouse rooftop that highlights a bocce court and event space. Completed in 2015, the building is now considered one of the most desirable office properties in its sub-market.

Building Features

13 to15-foot ceiling height

Prime Midtown South location

LEED SILVER- certified

Wired Certified Silver

BOMA 360 award winner


BOMA Pinnacle Awards

Renovated Building of the Year

- Portfolio Manager: Patrick Calcagno

- Property Manager: Fatmire Perezaj

- Property Assistant: Noelle Mihalinec

Major Tenants

Infor, Inc.

Microsoft Corporation

Staples (retail)


New lobby

New elevators

New windows

New tenant-controlled air conditioning

New state-of-the-art infrastructure

New storefronts

New communal roof deck and bocce court

New glass penthouse and terrace

LEED CS (Core & Shell) Silver certification

Contact Information

Leasing Agents

Steven M. Durels
EVP, Director of Leasing
SL Green Realty Corp.
(212) 216-1617
Lawrence Swiger
Senior Vice President
SL Green Realty Corp.
(212) 216-1628
Jeremy Bier
Vice President
SL Green Realty Corp.
(212) 216-1722
Elliot Karp
Leasing Associate
SL Green Realty Corp.
(212) 356-4106
Brett Herschenfeld (retail only)
Managing Director
SL Green Realty Corp.
(212) 216-1670

Property Management

Patrick Calcagno
Vice President, Portfolio Manager
SL Green Realty Corp.
(212) 356-4164
Erica Checchia
Property Manager
SL Green Realty Corp.
(212) 929-4209


Map Options

Transit Hubs
Subway Lines