Meet Our Executive Team

Karney Properties is operated by an experienced team of executives, with extensive expertise in a wide range of real estate development initiatives. Our commitment to excellence is only possible by maintaining the utmost professionalism, which is the foundation for our well-earned reputation within the industry.

Aliza Karney Guren


Chief Executive Officer

Aliza Karney Guren is the Chief Executive Officer and co-owner of Karney Properties. She assumed her position in 2003 and sets the overall strategy for the company. She is also directly involved in all key areas of the company’s activities, including development, finance, acquisitions and dispositions and asset management.

She has spent more than 20 years in the real estate industry, including related experience in law and mediation. Prior to joining the company in 1991, she was a practicing attorney and mediator, and founded and directed an independent nonprofit arts organization.

Aliza Guren, a California-licensed general contractor, is an active member of the Urban Land Institute and the National Association for Industrial and Office Parks. She is also a board member of the Center Theatre Group, one of the nation’s largest and most active theater companies. In 2014, she was named one of Bisnow’s top 60 women in Los Angeles commercial real estate.

Aliza Guren earned a bachelor’s degree magna cum laude from Harvard University, where she also earned a law degree cum laude from Harvard Law School. She is a member of the State Bar of California.

Susanna Karney Flaster



Susanna Karney Flaster is Principal and co-owner of Karney Properties. She joined the company in 1991 and has been actively involved in management oversight, operational strategy and financial planning since 2003.

Active in San Diego civic affairs, Susanna Flaster serves on the boards of directors of the Jewish Community Foundation San Diego, San Diego Museum of Art and Planned Parenthood of the Pacific Southwest.

Susanna Flaster earned a bachelor’s degree in psychology from Harvard University and a master’s degree in communication disorders from Northwestern University.

K.C. Yasmer

K.C. Yasmer

Vice President of Development 

As Vice President of Development, Mr. Yasmer has responsibility for all development and redevelopment projects within the portfolio.  Prior to joining Karney Properties, Mr. Yasmer served 12 years at Forest City Realty Trust, a publicly-traded real estate investment trust that owns, operates and develops urban, mixed-use projects.  His various roles included managing the acquisition, entitlement, design and construction of a $140 million mixed-use residential project in downtown Los Angeles, masterplanning, marketing, and developing commercial properties at the 4,600-acre redevelopment of the former Stapleton airport in Denver, as well as working exclusively and directly for the co-Chairman of the Board on corporate strategic planning and new site acquisition.

Mr. Yasmer received his undergraduate degree from Stanford University and was a member of the Men’s Division I-A golf team.

Carl J. Wellinger

Carl J. Wellinger

Director – Head of Asset Management 

Mr. Wellinger has overall responsibility of asset and portfolio management and strategic investments.

Prior to joining Karney Properties, Mr. Wellinger served as Vice President at CommonWealth Partners, a national, vertically integrated, real estate investment firm.  During his tenure, he held positions in the investment transactions and asset management groups, while most recently overseeing all value add and core investments throughout the East Coast, Midwest, Utah and Texas.  Mr. Wellinger was an integral member of the team which grew the investment platform from zero to over $7.5bn assets under management. Mr. Wellinger also held development and management roles at IDS Real Estate Group.

Mr. Wellinger received an Economics degree from the University of Michigan and his M.B.A. from UCLA Anderson School of Management.

Jennifer Sung

Jennifer Sung

Vice President and General Counsel

Jenn Sung joined Karney Properties as Vice President and General Counsel in 2017. Ms. Sung has overall responsibility for all aspects of Karney’s legal affairs. She provides legal support and guidance with respect to the company’s acquisitions, sales, leasing, property management, partnerships and financing transactions.

Prior to joining Karney, Ms. Sung was a partner at Goodwin Proctor LLP, where she represented institutional investors, public and private REITs, investment funds and developers in structuring, negotiating, documenting and closing complex real estate and corporate transactions for all asset classes. She earned a J.D. from Loyola Law School and a B.A. from UCLA, and is admitted to the practice of law in California.

CONTACT:  Tel (310) 476-5633  //  Fax (310) 476-4712  //  //  ADDRESS: 12011 San Vicente Boulevard, Suite 700 Los Angeles, CA 90049

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