Gregory Hartman Jaske

Gregory Jaske advises real estate developers, property owners and investors in sophisticated real estate matters.

Greg maintains a broad-based real estate practice that includes negotiating and structuring LLC and other joint ventures, acquisitions, purchase and sale agreements, development agreements, ground leasing and borrower-side financings.

With extensive experience in New York City and nationwide, Greg has guided clients through multimillion dollar joint venture agreements, representing both operators and investors in significant multifamily, commercial, and mixed-use properties and development projects. He also regularly counsels clients in telecommunications real estate matters, including data center development and leasing and rooftop facility leases, as well as tenant-side retail healthcare leasing. In addition, Greg has substantial experience in commercial real estate financing matters, from loans to purchases of co-lending interests and loan participations totaling billions of dollars in loan originations.

Greg frequently serves as lead counsel in high-stakes real estate matters, including representing a multi-billion-dollar family office in its negotiation of real estate joint ventures with sponsors for horizontal and vertical phases of development. Clients rely on him for his ability to structure and negotiate joint venture agreements, purchase and sale agreements, development agreements, property and asset management agreements, office and retail leases, telecom-related real estate agreements and real estate-related corporate matters.

Prior to joining Olshan, Greg worked at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C. and other prominent New York law firms, where he handled a wide array of real estate matters, including complex joint ventures and development projects. He began his career as an analyst at a leading international financial services institution and a hedge fund.

Greg grew up and resides on Long Island. He enjoys spending family time skiing, hiking and exploring the Catskills.