Jason Seidenberg currently serves as a Senior Vice President at Newmark’s New York headquarters. Seidenberg is a member of the New York Consulting Group, a team that partners with brokerage personnel to provide new business development, strategy development, financial structuring and transaction execution services. Seidenberg specializes in analyzing the financial impacts of a real estate transaction from both an acquisition and disposition perspective.
Prior to joining Newmark in 2024, Seidenberg was a Senior Vice President with JLL’s New York Consulting & Advisory Group. While there, he supported more than 1 million square feet of leasing transactions and over $200 million in property sales.
Prior to joining JLL in 2019, Seidenberg worked as lead Financial Analyst, focusing on acquisitions, leasing and property financings for a Manhattan-based landlord who owns and manages over 2 million square feet of office space and has a portfolio valued at over $2.5 billion.
Noteworthy Ongoing/Completed Transactions
- Bank of America: National portfolio strategy
- Cambridge University Press: NYC portfolio strategy
- LIXIL: 1 million+ square feet of office and industrial transactions
- Hackensack Meridian Health: 225,000-square-foot ambulatory/office
- Manulife US REIT: The Children’s Place 120,000-square-foot restructure
- Shefa School: 100,000-square-foot, 99-year ground lease and relocation
- Bhatia Development: $120 million property sale to The New School
- Fanduel: 36,000-square-foot relocation
Representative Clients
- Bank of America
- JP Morgan Chase
- Puig
- L’Oreal
- FanDuel
- Bhatia Development Org.
- Cambridge University Press
- The Shefa School
- LIXIL
- Vontobel
- Milrose Consultants
- CCRM
Education
Seidenberg earned a Bachelor of Science degree in Economics from the University of Wisconsin-Madison, and a Master’s degree in Real Estate Finance and Investment from New York University.