Brian Steinwurtzel Co-CEO and principal, GFP Real Estate Brian Steinwurtzel is co-chief executive officer and principal at GFP Real Estate. He oversees all aspects of the firm’s operations with a focus on new investments, development and project management. Steinwurtzel also leads the firm’s sustainability efforts: GFP Real Estate has deployed new energy-saving technologies portfolio-wide, including wireless thermostats, energy efficient lighting and sensors that monitor energy use with the aim of increasing efficiency. Under his leadership, GFP Real Estate worked on the office-to-residential conversion of a 1-million-square-foot space in the Financial District. Steinwurtzel currently serves on the board of the Downtown Alliance.