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Greg Leisch
Senior Managing Director of Market Research, Newmark

Mr. Leisch is an expert in commercial real estate, with experience in founding and running one of the most respected consulting, advisory, and information publishing firms in the commercial real estate field - - Delta Associates. Mr. Leisch retired from Delta Associates in 2015 to join Newmark Knight Frank as Senior Managing Director of Market Research. He also served until 2007 on the board of a public REIT, Republic Property Trust (RPT), where he served on the Audit and Compensation Committees and headed the Governance Committee. Liberty Property Trust bought RPT in October 2007, when Mr. Leisch’s board service ended.

Real Estate Consulting and Research

Mr. Leisch founded Delta Associates ( in 1980 in Washington, DC, and served as its Chief Executive until February 2015. As founder and CEO, he was the architect of the firm’s expansion into a national enterprise that provides a wide range of commercial real estate consulting services and information to public, private and institutional clients in matters of development feasibility, acquisition/disposition decision making, and general business research.  In his work with real estate developers and investors, Mr. Leisch provided market feasibility analyses for organizations such as The Hines Interests, LCOR, Lincoln Property Company, AEW, The Bozzuto Group, and Trammell Crow. His public sector assignments focused on providing expert advice to federal agencies, cities and counties on matters of public/private partnerships to accomplish public objectives, demographic research and projections, facilities needs studies and agency location studies.  Clients included, among others, the cities of Alexandria, VA; Washington, DC; Nashville, TN; and Rockville, MD; the county of Fairfax, VA; and various federal agencies including the Job Corp, GSA, and CIA.  


After retiring from Delta Associates in 2015, Mr. Leisch accepted a national leadership role with Newmark Knight Frank as Senior Managing Director of Market Research. For 3 and ½ years he re-organized the 70 person research department of this 12,000 person national commercial real estate services firm.


Mr. Leisch fully retired from active research and consulting services in January 2019.


Mr. Leisch is a frequent speaker on national and local economic and real estate market conditions and real estate development opportunities.  His recent speaking engagements have included regional and national conferences of NCREIF, NAIOP, ULI, NAHB, IREM, ICSC, Bisnow, and others.  Mr. Leisch also serves as a university lecturer in matters of market analysis and development economics.  He has, for example, lectured at Pennsylvania State, the University of Wisconsin, George Washington University, and Johns Hopkins University.  Mr. Leisch’s annual BenchMarks and TrendLines events, which present the state of the economy and commercial real estate markets in major cities around the U.S., are attended by thousands of industry leaders each year.


Memberships and Honors

Mr. Leisch is a member of Lambda Alpha Land Economics Society and the National Council of Real Estate Investment Fiduciaries. Until his retirement he was an associate member of the Real Estate Roundtable.  In 1990, Mr. Leisch's lifetime achievement in the industry was acknowledged by the American Society of Real Estate Counselors when he was designated a Counselor of Real Estate (CRE). 

Appointments, Education and Security Clearance

In 2001 the DC Mayor appointed Mr. Leisch to his task force on Transit Oriented Development.  In 2003, Mr. Leisch was selected to serve as a board member of The Washington DC Economic Partnership – the city’s economic development authority (EDA).  In 2006, he agreed to serve the Mayor of Alexandria, VA by accepting an appointment to his Economic Sustainability Commission. In 2008 he agreed to serve on the board of the Alexandria Economic Development Partnership (AEDP) - - the city’s EDA. In 2013 the City Manager of Alexandria appointed Mr. Leisch to serve on his Business Tax Reform Committee.


Mr. Leisch received his B.A. degree from the University of Wisconsin and a M.S. degree in Urban Planning from the same institution with a concentration/specialty in urban economics and real estate. He also has held a security clearance for handling sensitive assignments.