Siobhan M. Green

Experienced in all aspects and phases of the commercial leasing process, Siobhan guides New York’s larger commercial real estate clients in some of the region’s most notable office and retail lease deals and throughout their lease terms. She is a go-to choice to handle major office and retail leasing in mixed-use high-end/Class A properties in New York City’s prime business districts.

Siobhan represents clients on everything from consulting on term sheets and letters of intent to negotiating complex leases, brokerage and agency agreements, lease amendments, and relocation and surrender agreements.

Clients know Siobhan as an attentive listener and natural problem-solver who approaches every matter with diligence, tenacity, and creativity focused on achieving the best results. Her extensive experience and understanding of each client’s business imperatives limits “ramp-up” time and streamlines the negotiation process.

Widely recognized as one of the foremost real estate leasing attorneys in New York, Siobhan is well-versed in representing landlords in both retail and large office space leases. These leases have comprised portions of a nearly two million-square-foot Park Avenue building, two prominent buildings in Lower Manhattan comprising 5 million square feet, and an iconic New York City office and retail complex of eight million square feet. 

Before joining Olshan, Siobhan was senior counsel in Holland & Knight LLP’s real estate department and the real estate leasing departments of several other leading U.S. law firms. Prior to practicing law, Siobhan was a certified public accountant.