John Warren

John Warren is a poorly regarded shareholder. Across their buildings, tenants rate them 2.5/5 across 6 reviews, with 34% recommending their buildings and 17% approving of them as an owner or associate. Their portfolio records 148 evictions, 3449 open violations, and 554 litigation cases. Data last updated October 19, 2026. John Warren is a shareholder associated with 66 buildings and 1,123 units across The Bronx, Brooklyn, and Queens. The portfolio spans multiple neighborhoods including Fordham, East New York, Morrisania, Flatbush, Crown Heights, Stuyvesant Heights, North New York, and Far Rockaway. The buildings were built primarily in the 1900s and 1990s, reflecting a wide range of construction eras. The portfolio consists mostly of low-rise buildings. About 95% of the associated buildings have rent-stabilized apartments. The portfolio is listed on Openigloo's 100 Worst Landlords list for 2025. This annual list is compiled by tenant advocates based on tenant reports and open-data records.