Mark Boisi

Executive Vice Chairman

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  • Location

    1290 Avenue of the Americas
    New York, NY 10104-6178
    United States

  • Phone

    +1 212 318-9707

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Mark Boisi has been active in commercial real estate in New York City since starting his career with Cross & Brown Co. in 1975. In 1978, he became a founding member of Abrams Benisch Riker Inc., which became Colliers ABR Inc. He was formerly a member of the Cassidy Turley Board of Directors and Executive Committee.  

Over his 39-plus year career, Mr. Boisi’s primary focus has been on corporate and institutional real estate, principally in tenant representation, property management and leasing assignments. He has coordinated real estate projects on behalf of dozens of corporate users and owners. He is the co- head of the firm’s $100 million joint venture investment fund with AEW Capital, which invests in commercial property in the New York metropolitan area.

Awards & Associations

  • Real Estate Board of New York’s Robert T. Lawrence Most Ingenious Deal Award, 2002
  • UFT headquarters relocation downtown in New York City – 1,000,000 SF of transactions


  • DLJ/Credit Suisse, 277 Park Avenue, New York, NY – 740,000 SF headquarters relocation
  • UFT, 52 Broadway, New York, NY – 400,000 SF net lease
  • UFT, 50 Broadway, New York, NY – 370,000 SF purchase
  • Bertelsmann, 1540 Broadway, New York, NY – 257,000 SF space disposition
  • GE Commercial Finance, 901 Main Avenue, Norwalk, CT – 250,000 SF headquarters
  • DKNY, 240 West 40th Street, New York, NY – 143,000 SF renewal and expansion
  • General Electric, 299 Park Avenue, New York, NY – 132,000 SF corporate consolidation


  • General Electric
  • General Electric Commercial Finance
  • United Nations
  • Joseph E. Seagram & Sons
  • Bertelsmann/Random House
  • LVMH
  • Greenberg Traurig
  • Donaldson, Lufkin & Jenrette
  • DKNY
  • United Federation of Teacher