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.

Personal interests: Victorian Literature, the Spanish Civil War and Art History.

David Alperstein, Chief technology officer 

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.

Personal interests: hiking Hudson Valley trails, following my son’s career as a nationally ranked fencer, NY Times crossword, American history.


Nancy Jones enjoys the challenge of matching the right clients with the right office space. Every week she communicates by phone and email with hundreds of potential clients. It’s a numbers game, and she takes numbers inspiration from Michael Jordan, who admits he “missed more than 9,000 shots in his career; lost almost 300 games; 26 times was trusted to take the game winning shot and missed; failed over and over again in his life; and that is why he succeeded.” Keep those phone calls and emails going!

Ms. Jones graduated summa cum laude from A&T State University in Greensboro, North Carolina where she majored in political science. Before joining Wharton Property Advisors Nancy worked for 23 years in administration at Cooley LLP in New York. She resides in Brooklyn.

Personal interests: volunteering, theatre, civil rights, and writing screenplays.


Personal interests: playing ball, eating, sleeping.