William Rich is the President of Delta Associates, Transwestern’s consulting affiliate, where he oversees all operations. Delta, which has provided services to the commercial real estate industry for over 40 years, offers consulting, research and advisory services for all property types through the United States, including market feasibility, highest and best use, market entry strategies, asset performance enhancement, market due diligence, white papers on special topics, valuation analysis, and litigation support. Delta also offers subscription publications for selected metro areas in the Mid-Atlantic for the apartment, condominium, office, retail, and housing markets.


William has been with Delta Associates since 2002 and has extensive consulting experience covering all aspects of commercial real estate across the country. He is a regular presenter at Transwestern and Delta’s top annual events, including TrendLines®, which provides an overview and forecast for the commercial real estate market and local and national economy, and Delta’s Washington/Baltimore Multifamily Market Overview and Awards for Excellence.
William has been quoted in major publications, including The Washington Post, Washington Business Journal and The Baltimore Sun. His research also has been published in The Wall Street Journal, The New York Times, and several national and regional real estate publications. In addition, he has been interviewed on WAMU, a Washington affiliate of National Public Radio, and appeared on local television news programs.
William is a frequent speaker on local real estate market conditions and development opportunities. He also serves as a lecturer at Georgetown University and George Mason University.


  • Counselor of Real Estate (CRE)
  • Urban Land Institute (ULI)
  • Washington, D.C. Economic Partnership (WDCEP) – Board of Directors
  • Southwest D.C. Business Improvement District (SWBID) – Advisor


William received a bachelor’s degree in business administration with a specialization in finance from American University in Washington, D.C.