Chairman & Principal
License # 326159
Mr. Parsley has been involved in and responsible for all phases of commercial real estate brokerage activity over the past 37 years. A native Houstonian, he returned to Houston after graduating from law school in 1979 to serve as an attorney with Bracewell & Patterson, specializing in corporate law. In 1983, he joined Colliers, where he is one of the company’s principal shareholders. He served as President and CEO of Colliers’ Houston office prior to assuming the position of Co-Chairman in 2004 and Chairman in 2020. He brings a wide range of real estate experience, along with an understanding of the legal issues involved in real estate transactions. He has represented a broad range of corporate clients, both public and private, in office and industrial sales and office tenant rep lease transactions in Houston and throughout the USA. Bob currently serves as a member of Colliers’ Tenant Advisory Council, Healthcare Services Group and Law Firm Services Group. Bob has been one of the top two producers in the Colliers Houston office for the past fifteen years. He has also been a Colliers Everest Award recipient since the inception of the award, which is granted to the top 10% of producers for Colliers in North America. Bob was recognized as a Connect Media CRE 2020 Top Broker with over $403 million of deals executed in 2019, and in 2018 he was recognized as the #2 ranked Heavy Hitter for office tenant representation in the greater Houston area with over $200 million in gross dollar value of deals executed in 2017. The SIOR designation that he carries signifies the highest level of accountability and ethical standards in commercial real estate.
- Colliers' Top 10 Producer (2000 - 2020)
- Colliers' Titan Award (2003 - 2020)
- Colliers' Everest Club (2011 - 2020)
- REDNews Texas Commercial Real Estate Icon (2020)
- Connect Media Top Broker Award (2020)
- CRE Office Tenant Rep Heavy Hitter Houston Business Journal (2014 - 2020)
- CRE Office Landlord Rep Heavy Hitter Houston Business Journal (2017)
- NAIOP Office Broker of the Year (2004)
- Real Estate Sales Agent's License, Texas
- JD, The University of Texas School of Law
- Bachelor of Arts in Government, The University of Virginia
Memberships & Involvements
- Colliers Tenant Advisory Council Member
- Colliers Law Firm Services Group Member
- Colliers Healthcare Services Group Member
- Houston Office Leasing and Brokers Association (HOLBA)
- McGuireWoods LLP
- Houston Methodist Hospital
- Howard Hughes Corporation
“I want to thank Bob Parsley in connection with the lease of our office space. In the past, we had always negotiated our own lease and did not believe we needed the assistance of a real estate professional to assist us in negotiating and analyzing the various alternatives that were available to use. As a result, we never got all the issues resolved and there were always issues that were not satisfactorily completed. Bob is a knowledgeable tenant rep who possesses a unique understanding of the office market, based on both his own experience as a practicing attorney and in his representation of various other law firms in the market. That was evident in the negotiations on our behalf with the landlord.” William E. Junell, Jr., Co- Managing Partner Schwartz Junell Greenberg & Oathout, L.L.P.
Senior Executive Administrator, Brokerage Services
Lisa Sims joined Colliers in 2001 as a member of the Office Services Group. She brings more than 23 years of commercial real estate experience to our team. Lisa oversees all aspects of lease and sale transactions from inception through closing, as well as manages the workflow and facilitation of tasks for her team. Lisa has participated in numerous transactions involving office, medical, land and investment properties. She manages the compilation of research materials, creation of marketing and promotional materials, preparation of financial analysis reports, and provides various other brokerage support services to insure the success of each project in which she is involved. Lisa’s strengths are her attention to detail, unique problem solving skills and her commitment to excellence. She has built an outstanding reputation as a dedicated professional with a strong work ethic and has a proven record of providing excellent internal and external results for clients and the members of her team.
Prior to joining Colliers, Lisa was with a smaller boutique commercial real estate firm in Houston. Previous to that, Lisa spent 18 years working with homebuilders in Houston and Austin, where she gained a multitude of knowledge in many different aspects of residential real estate transactions. Lisa is a native Houstonian.
Director of Market Research
Lisa joined Colliers in 2010 as Director of Market Research and has 37 years of commercial real estate experience. Lisa initiates proactive market research projects to further the business goals of the company. She writes and prepares 29 market reports annually, including quarterly reports on Houston's retail, office, industrial and healthcare properties. Further, she prepares statistical ownership reports for various clients as well as an annual Houston Economic Overview. Lisa also creates PowerPoint market presentations, trade journal articles, and other marketing materials supporting the company's business endeavors. She works with senior management in planning the company's marketing strategy and public relations support for local and national conferences, luncheon meetings, recruitment programs, and special events. Lisa works closely with the company's brokers to develop effective custom market research material specific to existing and potential clients.
Lisa serves on the Colliers Editorial Board, the Colliers U.S. Research Council, and is a recipient of the Colliers Researcher of the Year Award.
Lisa earned the Commercial Property Research Certification (CPRC) from Colliers University. CPRC is the first and only accreditation for commercial real estate research professionals. It offers a professional development path to increase strategic and tactical expertise in marketing/research, knowledge of the industry and capabilities with commercial real estate tools.
Director, Financial Analytics
Bringing 32 years of experience in commercial real estate, Marilynne joined Colliers in 2018 to provide financial analysis to the company’s leasing and investment sales teams for all types of assets, including the following types of financial analysis:
- lease renewal and relocation comparisons
- mid-term lease renegotiations (“blend and extend”)
- lease buyouts
- sublease disposition/recovery
- build-to-suit vs. design-build
- lease vs. buy
- own vs. sale/leaseback
- landlord net effective rate
- discounted cash flows
Prior to joining Colliers, she specialized in advising companies regarding their financial analysis for commercial real estate requirements or investments for 17 years. Marilynne also has a background in commercial mortgage underwriting/loan originations and commercial real estate appraisal.