John Brennan

John Brennan is a commercial real estate broker with Marcus & Millichap, specializing in investment property sales across Brooklyn, New York. With a focus on both rent-regulated and free market multifamily, mixed-use, retail, office, land, and redevelopment properties, Brennan has built a reputation as a trusted advisor and skilled negotiator on behalf of his clients navigating the Brooklyn commercial real estate market.

Since 2013, Brennan has closed nearly 150 sales, amounting to nearly $400 million in dollar volume. His notable sales include two South Brooklyn elevator apartment buildings totaling 150 units for $46 million; seven buildings in Sunset Park totaling 124 units for $20 million; a $15 million residential development site in Prospect Lefferts Gardens; a $9 million commercial and industrial site in Central Brooklyn; a $7.5 million medical office building in Bay Ridge; and a 32-unit apartment building in Bay Ridge for $6.1 million. Backed by access to one of the industry’s largest buyer networks, his track record of securing premium pricing on each sale reflects his deep market insight and his commitment to prioritizing interpersonal relationships.

Brennan is a multi-year recipient of the Marcus & Millichap Sales Recognition Award (2015 through 2023) and was a National Achievement Award qualifier in 2016 and 2018. He earned a Bachelor of Arts in Psychology from Boston University and currently lives in Hoboken, New Jersey. Outside of work, he enjoys Brazilian Jiu Jitsu, hiking, exploring New York City’s restaurant scene, and spending time with family and friends.

License: NY: 10301221743