MANAGEMENT 2018-05-17T15:49:09+00:00

Meet the team

Ruth-Colp-Haber-271x300Ruth Colp-Haber
Counselor of Real Estate
Fellow of Royal Institution of Chartered Surveyors

Over the last 25 years, Ruth Colp-Haber has completed roughly 500 NYC office leases for businesses, schools, and nonprofits.

In a real estate market where landlords charge eye-popping rents, Colp-Haber has a record of obtaining favorable leases for her clients. Colp-Haber has been a member of the Real Estate Board of New York (Rebny) since 1989. She currently serves on the Economic Policy, Plaza District, and Tax Policy and Research Committees.  She is also a Board Member of St. Mary’s Foundation for Children and La Casa Latina and Association of Latino Alumni at the University of Pennsylvania

In her career before real estate, Colp-Haber was a Mortgage Trader at Merrill Lynch.

Colp-Haber earned her MBA at The Wharton School. She earned her Bachelor’s degree at the University of Pennsylvania, graduating Magna cum Laude. She is a native New Yorker and attended the Fieldston School.

ID headshotDavid Alperstein
Vice President / CTO

Mr. Alperstein brings a focus on customer service to his position at Wharton Property Advisors.  With a background in engineering and Information Technology, he brings technical knowledge to his role that helps in finding his clients office solutions in an increasingly “wired” world.

Before joining Wharton Property Advisors, Mr. Alperstein was the Director of Information Technology at Mercy College. He began his career with Texaco, where he was a Senior Mechanical Engineer, followed by many years with IBM’s Global Services, where he was a Technical Services Manager.

Mr. Alperstein earned his BS in Mechanical Engineering at The Pennsylvania State University. He has completed a number of graduate courses at Pace University’s Lubin School of Business. He resides with his family in Fishkill in upstate New York’s beautiful Hudson Valley.

Rachel Borkowski
Vice President

Rachel Borkowski earned her Bachelor’s degree in Communications at the University of Maryland. Ms. Borkowski started her corporate real estate career in 2012. Her first job was at Douglas Elliman where she specialized in condominium sales and high-end retail leases.  Thereafter, Rachel took her real estate experience to Marcus and Millichap where she managed their Brooklyn marketing team with a specific focus on financial analysis.

Beyond corporate real estate, Rachel is well versed in brand development from her time as an Operations Manager at VburgerUSA and her experience as Founder and CEO of

She currently resides in Bushwick, Brooklyn. She enjoys exploring the outdoors with her dog Shayna.

Lucy The English Bulldog
Broker in Training