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Clay Hammerstein

Vice Chairman

License: Lic. 00980828

Clay Hammerstein Vice Chairman
Lic. 00980828
Los Angeles Downtown 400 S. Hope Street
25th Floor
Los Angeles, CA 90071

Professional Experience

Clay Hammerstein has devoted his 26-year career to the representation of commercial real estate tenants throughout the United States.

Recognized repeatedly by Los Angeles Business Journal, Real Estate Southern California, Real Estate Forum and Commercial Property News as one of the top brokerage professionals in the industry, Mr. Hammerstein provides strategic advisory and transaction implementation services to leading service firms and major U.S. and multi-national corporations.

Prior to the merger of Insignia/ESG (IESG) and CBRE, Mr. Hammerstein served as a co-founder and co-leader of IESG’s Southern California brokerage division. In this capacity, he was critical to the successful expansion of the firm into the Western U.S., and its development into a top-tier occupier services firm. Before joining IESG, Mr. Hammerstein was a top sales professional and Managing Director of Studley’s downtown Los Angeles office.

Mr. Hammerstein co-founded CBRE’s international Law Firm Practice Group, which has served over 70 of the top 100 law firms in the country. He has a deep knowledge of the legal industry’s evolving trends and unique space needs and advises many of the leading law firms on their occupancy strategies.

A creative dealmaker and skilled consensus-builder, Mr. Hammerstein has extensive experience representing some of the world’s most respected financial, consulting and creative firms, including Goldman Sachs, State Street Bank, Credit Suisse, McKinsey & Co., Netflix, Condé Nast, Gensler and all of the WPP companies with their Los Angeles requirements.

Professional Affiliations / Accreditations

  • Board Of Directors, Juvenile Diabetes Research Foundation, L.A. Chapter


  • Colbert Coldwell Circle Member, top 3% of CBRE professionals worldwide (2003-2013)
  • Among Top 25 CBRE Office Brokers Nationwide (2009-2011)
  • Real Estate Southern California’s Annual Top Broker List (2004-2012)
  • Los Angeles Business Journal’s Top Office Broker List (2007-2012)


  • University of Colorado, Bachelor of Science; Political Science

Partial Client List

  • Bingham McCutchen - Multiple Transactions Totaling 230,000 SF
  • Conde Nast - 42,000 SF
  • Credit Suisse - 60,000 SF
  • Fenwick & West - Multiple Transactions Totaling 210,000 SF
  • Goldman Sachs - 43,000 SF
  • Greenberg Glusker - 70,000 SF
  • Greenberg Traurig - 70,000 SF
  • Loeb & Loeb - 144,000 SF
  • Move Inc. - 135,000 SF
  • Sidley Austin - 185,000 SF
  • Southern California Gas Co. - 352,000 SF
  • State Street Bank - 130,000 SF
  • Waller Lansden - 160,000 SF


  • Baker Hostetler
  • Bingham McCutchen
  • Bloomberg
  • Condé Nast
  • Credit Suisse
  • Fenwick & West
  • Gensler
  • Goldman Sachs
  • Greenberg Glusker
  • Greenberg Traurig
  • Hill, Farrer & Burrill
  • Hogan Lovells
  • KB Home
  • McKinsey & Co.
  • Move Inc.
  • Munger Tolles & Olson
  • Netflix
  • Ogilvy & Mather, Inc
  • Simpson Thacher & Bartlett
  • State Street Bank
  • Steptoe & Johnson
  • Towers Watson
Clay Hammerstein Vice Chairman
Lic. 00980828
Los Angeles Downtown 400 S. Hope Street
25th Floor
Los Angeles, CA 90071