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Katy O’Brien focuses her practice on a variety of commercial real estate transactions, including acquisitions, development, leasing, and financing. During her tenure at Greenberg Traurig, Katy has represented national, regional and local clients, including national banks, REITs, investment funds, developers, private equity groups and individual property owners on all aspects of commercial real estate transactions.


  • Sales and acquisitions
  • Leasing
  • Real estate operations and general business matters



  • Representation of national bank on disposition of 20+ retail locations across the U.S.
  • Leasing representation of a national retailer in rollout of a new street level retail concept
    in multiple states.
  • Acquisition of multi-tenant warehouse projects in Mississippi and Tennessee.
  • Leasing representation of a real estate company with 20+ office and industrial parks and
    projects in Colorado.
  • Acquisition of an historic multi-tenant office building in downtown San Francisco, California.
  • IPO and subsequent public stock offering providing U.S. representation of an
    underwriter to a Canadian real estate investment company.
  • Law Clerk, U.S. Department of Justice, Environmental and Natural Resources Division, 2009
  • Extern, Hon. William Robbins, Second Judicial District, Denver County, 2010

Recognition & Leadership

  • Listed, The Best Lawyers in America, "Ones to Watch," Real Estate Law, 2022
  • Team Member, Chambers USA Award for Excellence, Real Estate, 2017-2018
  • Team Member, a U.S. News - Best Lawyers®, "Law Firm of the Year" in Real Estate Law, 2015
  • Team Member, a Law360 "Real Estate Practice Group of the Year," 2015
  • Four Year Letter Winner and Team Captain, Women’s Varsity Basketball, Princeton University
  • Member, American Bar Association
  • Member, Colorado Bar Association


  • J.D., University of Colorado Law School
  • A.B., Princeton University
  • Colorado