For more than 80 years, the Society of Industrial and Office Realtors® (SIOR) has been the leading global professional office and industrial real estate association, and continues to move the industry and our members’ business forward as we drive the future of CRE. With 3,700 members in 45 countries and 722 cities, SIOR represents today’s most knowledgeable, experienced, ethical, and successful commercial real estate brokerage specialists.  

SIOR has certified thousands of members with the prestigious SIOR designation, a professional symbol of the highest level of knowledge, production, and ethics in the real estate industry. Real estate professionals who have earned the SIOR designation are recognized by corporate real estate executives, commercial real estate brokers, agents, lenders, and other real estate professionals as the most capable and experienced brokerage practitioners in any market.  

A professional affiliate of the National Associate of Realtors®, SIOR is dedicated to the practice and maintenance of the highest professional and ethical standards. SIOR maintains a commitment to business and industry by providing outstanding professional services, publications, and educational programs.  

The SIOR designation stands unchallenged for excellence in the performance of real estate services, and is universally recognized as the prerequisite in the selection of a commercial real estate broker, agent, or consultant.  


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Our Team

Matthew Leguen De Lacroix

Head of Business Development EMEA

Matthew is Head of Business Development, EMEA for SIOR [Society of Industrial and Office Realtors], following four years as director of SIOR Europe where he managed and was administrator for the European Chapter. He is now charged with implementing the International development strategy for the society.

Up until the end of March 2015, Matthew was managing partner and chairman of DTZ’s Geneva office. He has over 30 years of real estate experience. He is a Fellow of RICS and member of SIOR. Matthew was elected for a two-year term (2014-2016) as the president of the European Regional Chapter of SIOR and remains on the ERC Board. He was the international vice-chairman of the SIOR Admissions Committee for two, two-year terms. He was elected a trustee of the SIOR Foundation in 2015 and continues to serve.

He is a past member of the RICS Continental Europe Standards Board (2003-2008) and is the past vice-chairman of RICS Switzerland (2003-2012). He has lectured in ethics and RICS on numerous Swiss master’s degree / real estate courses, including USPI and the IEI.

Contact Matthew