Gwathmey Siegel Kaufman & Associates

T: 212-947-1240

Company Profile

Founded in 1968, Gwathmey Siegel & Associates Architects was a New York-based architecture firm offering master planning, architectural, interior and product design services. After the death of co-founding partner Charles Gwathmey in August 2009, Robert Siegel, FAIA continued to lead the company. In 2011, Gene Kaufman bought a controlling share of the company which changed its name to Gwathmey Siegel Kaufman & Associates.

Building Portfolio Profile

0 10 20 30 40 50 1 2 3 4 5 6 7 Buildings Floors Gwathmey Siegel Kaufman & Associates


Central Midtown

  • Windsor Park (100 West 58th Street)
    15 floors 103 units
    Pre-war high-rise doorman elevator condo building. The building's amenities include a gym. Apartments range from studios to penthouse "homes" (actual homes built on top of the building) whose size sometimes gets quoted in cubic feet. Located near Central Park.

Central Village

  • Astor Place (445 Lafayette Street)
    21 floors 39 units
    A 21-story mixed-use commercial and residential condominium project containing 39 loft units.

Financial District

Garment District

  • The Residences at 400 Fifth Avenue (400 Fifth Avenue)
    58 floors 163 units 1 fee ad Last: 13 days ago
    Modern high-rise doorman elevator condo building. The building's amenities include a gym and a garage. The building also contains a 5-star 214-room hotel. The apartments have high ceilings.


  • Soho Mews (311 West Broadway)
    9 floors 67 units
    A two-building property measuring 175,000 sq ft that consists of a 9-story structure facing West Broadway and an 8-story one facing Wooster Street.

Union Square

  • 240 Park Avenue South
    17 floors 48 units
    Modern high-rise doorman elevator condo building. The apartments range in size from about 805 to 2,700 square feet. The apartments have high ceilings (10' 0" - 11' 0").

Downtown Jersey City

  • 70 Columbus (70 Christopher Columbus Drive)
    50 floors 545 units
    High-rise building. The building's amenities include a children's play room.