GY properties is a U.S. real estate company headquartered in Philadelphia, PA, specializing in acquisition, development, construction, renovation, and in-house management of multifamily residential properties. GY Properties has been doing business for more than 32 years in the Philadelphia region. 

“A great company starts with great people. Our team’s hard work and dedication at GY Properties is integral to our success.”

Doron Gelfand, Founder & President







Doron is responsible for general operations at GY Properties, with 32 years of experience in the US residential market and more than $725M in acquisitions, developments, management and dispositions. Doron is Co-founder and Partner in Yardeni, Gelfand, Aberman & Co., a boutique Israeli accounting firm; and Partner in Prometheus Financial Advisory, an independent economic and financial consulting firm. Doron is a CPA and earned his BA in economics and accounting from Tel Aviv University, Israel. He is also well-known for his spectacular international handball career with the Israeli national team. Doron is a major (res.) in the IDF and served as military police company commander until age 49.

Haim Gelfand, CEO

Haim leads all residential activities and general operations at GY Properties and has extensive experience in real estate. Haim has supervised and functioned as the contractor on site of numoros project since 2009. He has also served as an associate in one of Israel’s leading real estate law practices at Weksler, Bregman & Co., worked two years in EY’s transaction real estate team. Haim is a CPA and attorney at law in Israel. He earned his BA in accounting, his LLB and MBA, with concentration in financial management, from Tel Aviv University, Israel. Haim has served as an officer in several armored corps units, and received an Israeli military decoration.

Amos Dikenstein – VP Operations

Amos is responsible for identifying new residential investment opportunities, due diligence and transactional execution of new properties. Amos is also responsible for asset management and for maximizing the value of Gelfund’s portfolio. Amos has also worked at GY Properties from 2012 and, since 2014 serves as VP Analyses & Operations, overseeing the company’s entire residential projects lifecycle. Previously, Amos served in several operations, marketing and pre-sale management roles in leading Israeli hi-tech companies. Amos completed his legal internship at Gornitzky & Co. and earned his LLB (cum laude) from the College of Management, Israel. Amos is a naval officer and holds the rank of lieutenant-commander.

Arthur Ruppin – VP Finance

Arthur leads finance activities at GY Properties and has vast experience in real estate investments, development, construction and asset management in the US. Prior to joining GYProperties in 2003 as its Chief Operations Officer, Mr. Ruppin was the CEO of PLA Advance Construction Co. a real estate development and construction company in Israel and was also the CEO of Marathon Development Corp. a single homes builder in Connecticut and upstate New York. Arthur earned his BA in Economics from the Hebrew University, Jerusalem and a MBA from INSEAD, Fontainebleau, France.


Joseph Palumbo

Construction Supervisor

Kathryn Sullivan


Miri Hemo

Operations Manager

Kobi Zonshein

Maintenance Supervisor

Marlene Jacobs

Senior Regional Property Manager

Henri Popa

Acquisitions Analyst

Ashley Self


Gwen Mattia

Human Resources

Nancy Palazzo

Regional Property Manager

Miguel Olave

Maintenance Supervisor