Roosevelt Island Southtown, NYC View of Roosevelt Island, NYC and the Southtown Riverwalk Housing Complex.

Roosevelt Island Southtown, NYC

Roosevelt Island Southtown, NYC

Project Details

  • Address: Roosevelt Island, NY
  • Owner: The Hudson Companies Incorporated and Related Companies
  • Architect: SLCE Architects, Gruzen Sampton LLP,
  •   and Costas Kondylis & Partners LLP

Project Key Features

Riverwalk is an approximately 1.2 million square foot, 19 acre planned community on a waterfront setting. Community includes nine buildings and 2,000 new units of housing, a new central retail commons at the subway station and new recreational facilities for all of the island’s residents. The first seven residential buildings have been completed, along with the new Main Street, new ball fields and retail and childcare facilities. Ettinger Engineering Associates is the MEP/FP engineer of record for Building numbers 1,2,3,4,5, & 7. Design and construction over rock excavation, constructing over a subway tunnel, variable sub-surface conditions, and the extension of utilities to previously un-served areas.

475 Main Street
(Building 1)

  • Staff housing for Memorial Sloan-Kettering Cancer Center
  • 210,840 square feet
  • 256 units
  • Completed July 2003
  • Poured-in-place concrete
  • Design by Gruzen Samton Architects with SLCE Architects
  • Construction management by Monadnock Construction Inc.
  • Financed by Key Bank

465 Main Street
(Building 2)

  • Staff Housing for Weill Cornell Medical College
  • 149,000 square feet
  • 136 units
  • Completed in October 2003
  • Poured-in-place concrete
  • Design by Gruzen Samton Architects with SLCE Architects
  • Construction management by Monadnock Construction Inc.
  • Financed by Key Bank

Riverwalk Place, 455 Main Street
(Building 3)

  • Market-rate condominium; block of units sold to Weill Cornell Medical College
  • 235,000 square feet, including 6,400 square feet of retail
  • 218 total units, including 88 units sold to WCMC
  • Completed March 2006
  • Poured-in-place concrete
  • Design by Gruzen Samton Architects with SLCE Architects
  • Construction management by Monadnock Construction Inc.
  • Financed by Hypo Bank

Riverwalk Landing, 425 Main Street
(Building 4)

  • Market-rate condominium; blocks of units sold to Memorial Sloan- Kettering Cancer Center and New York University
  • 240,000 square feet, including 10,000 sq. ft. of retail
  • 230 total units, including 96 units for MSK and 48 units for NYU
  • Completed August 2007
  • Poured-in-place concrete
  • Design by Gruzen Samton Architects with SLCE Architects
  • Construction management by Monadnock Construction Inc.
  • Financed by PB Capital

Riverwalk Court, 415 Main Street
(Building 5)

  • Market-rate condominium
  • 150,000 square feet
  • 123 units
  • Completed December 2008
  • Poured-in-place concrete
  • Design by Costas Kondylis & Partners LLP
  • Construction management by Monadnock Construction Inc.
  • Financed by PB Capital

Riverwalk 7, 480 Main Street
(Building 7)

  • Market-rate rental
  • 215,000 square feet
  • 266 units
  • Anticipated completion 2015
  • Poured-in-place concrete
  • Design by Handel Architects LLP
  • Construction management by Monadnock Construction Inc.
  • Completed and opened July 2015

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