Our resources are aligned around a consistent purpose – a focused investment strategy and a single product type.
We invest only through our funds, we manage what we own, and we only purchase recent-vintage apartment communities in premier western markets. We are not market timers, but rather rely on operational initiatives and tactics to create value in all market conditions.
Our team of nearly 250 professionals is a multifamily expert with a culture focused on the resident experience. We believe that success consists of happy employees leading to satisfied residents and exceptional investment performance.
Griffis Residential has a scalable investment and management platform, employing a dedicated team of nearly 250 real estate professionals, including approximately 200 site-level property management associates supported by deep corporate resources. These nearly 50 corporate employees span multiple functional areas including: acquisitions and dispositions; finance, accounting and compliance; asset management; marketing and communications; information technology; property operations; and construction management.Read Team Profiles
Chairman and Co-CEO
Mr. Griffis brings 33 years’ apartment experience, consistently investing in apartments since the founding of the predecessor companies Griffis/Blessing, Inc. (1985) and Griffis Investment Company. Historical investment markets include: Colorado, Washington, Oregon, California, Texas, Nevada and Arizona. Mr. Griffis has invested in 14,600 units for total transactions of 24,528 units valued at $3.3b (2018).
Mr. Griffis is Chairman and Co-Chief Executive Officer sharing responsibility for strategic management of Griffis Residential and its investment activities. He is a member of the Griffis Residential Investment Committee.
Mr. Griffis has been involved with numerous nonprofits and charities. He is a former Trustee of Colorado College and is a member of the William Jackson Palmer Founders Society, The Fountain Valley School, and a member of the Casa Serena Society. Appointed by the County Board of Commissioners, Mr. Griffis is a former member of the El Paso County Facilities Corporation. He has also led various public/private initiatives including: the development of a 150-bed dormitory on the University of Southern Colorado Campus, the selection and acquisition of a new D-38 high school, four conservation easements, the assemblage and creation of a public 800-acre park, and the preservation of an archaeological site and section of the historic Cherokee Trail. This is the oldest pioneer trail in the State of Colorado for which he was awarded the Friends of the Oregon Trail award. Mr. Griffis is a founding board member of Griffis Residential Gives, a public non-profit formed to address affordability and homelessness and its contributing causes in the cities in which Griffis Residential owns apartments.
Mr. Griffis holds a B.A. from Colorado College.
Mr. Birnbaum has been Co-Chief Executive Officer since the founding of Griffis Residential and the Prior Funds, sharing responsibility for strategic management of Griffis Residential and its investment activities. In addition to being a member of the Griffis Residential Investment Committee, he manages the execution of major investment activities and investor reporting. Mr. Birnbaum has successfully overseen the acquisition or sale of 17,111 apartment units in five states.
Prior to Griffis Residential, Mr. Birnbaum was CEO of Tablogix, a European-based contract logistics and warehousing company. Founded in 1994, Mr. Birnbaum oversaw its expansion into multiple international markets and managed the company’s sale and relocation to London in 1998, where he continued as CEO until 2003.
Mr. Birnbaum holds a B.A. from Colorado College and an M.B.A. from Dartmouth’s Amos Tuck School. He currently chairs the Museum Committee for the Colorado Springs Fine Arts Center at Colorado College, is a trustee of the Denver Art Museum, and serves on the Russian and Eastern European Acquisition Committee for London’s Tate Modern Museum.
President and COO
Mr. Barta is responsible for Griffis Residential’s asset management initiatives and overseeing property operations and finance functions. Mr. Barta is a member of the Fund V Investment Committee.
Prior to joining Griffis Residential in 2005, Mr. Barta served as Corporate Controller for Westmoreland Coal Company, a publicly-traded company, for four years, where he oversaw all financial and accounting functions. From 1994 to 2001, Mr. Barta was in the audit practice in the Denver, Colorado office of KPMG.
Mr. Barta holds a B.A. from the University of Colorado, Boulder.
Chief Financial Officer
Mr. Souther is the Chief Financial Officer for Griffis Residential and is responsible for finance, reporting, accounting, and tax administration. Prior to Griffis Residential, Mr. Souther was with Denver-based D4 Urban, LLC, where he served as Chief Financial Officer.
Prior to his move to Denver, Mr. Souther was Chief Financial Officer of the US subsidiary of a publicly-traded multinational property development and management company. Mr. Souther brings 20 years of accounting experience to Griffis Residential and an extensive background in leadership of key areas of finance for the real estate, construction, and professional services sectors. Mr. Souther serves as the Chief Compliance Officer in connection with Griffis Residential’s status as a Registered Investment Advisor.
Mr. Souther is a Certified Public Accountant and holds B.S. and M.S. degrees in Accounting from Wake Forest University.
Sr. Vice President of Capital Markets
Mr. Leggee manages all private equity capital raising initiatives for Griffis Residential and is a member of the Fund V Investment Committee. Mr. Leggee is responsible for identifying, acquiring and building relationships with institutional, high net worth and family office clients to maintain and grow Griffis Residential’s private equity real estate fund business.
Mr. Leggee also contributes to fund strategy, tracking industry trends and research. Prior to joining Griffis Residential in 2014, Mr. Leggee spent eight years at NorthMarq Capital, most recently as a Producer of Debt & Equity Placement.
Mr. Leggee holds a B.S. in Real Estate and Finance from DePaul University. He serves on the Emerging Leaders Board of the National Multifamily Housing Council (NMHC). Additionally, Mr. Leggee is a member of PREA and the ‘Rising Leaders’ program, as well a member of the Urban Land Institute (ULI) and its Young Leaders Council. He also serves on the Development Committee of the Denver Art Museum.
Sr. Vice President of Investments
Mr. DiRienzo is responsible for the acquisition, underwriting, due diligence, market research and disposition of investments. In addition, Mr. DiRienzo is a member of the Fund V Investment Committee.
Prior to Griffis Residential, Mr. DiRienzo was with Northmarq Capital for six years where he was named “Analyst of the Year” and was further recognized with the “Analyst Excellence” and “Amerisphere Excellence” awards.
Mr. DiRienzo holds a B.S. in Finance from Colorado State University. He also represents Griffis Residential on the metro-Denver Economic Development Committee, served on Griffis Residential’s Customer Experience Management Team, and is a member of the Urban Land Institute (ULI).