640 West 237th Street, Bronx, NY 10463

640 West 237th Street is a 19-story, 65-unit Class A residential building in Riverdale, constructed in 2006 and currently owned by Stephen Cohen. The building has experienced recurring indoor air quality issues, with the most recent complaint in April 2025 regarding ventilation problems. Previous concerns include chemical vapors in July 2021 and construction lead dust from that same period, which remains unresolved.

The property has documented multiple plumbing and sanitation issues from mid-2019, including two mold violations (one with penalties), sewage problems, and sink malfunctions, though most of these were resolved through inspections. The building has had repeated heating and hot water system problems, with emergency complaints recorded in 2019 and 2020, though no violations were found during subsequent inspections. More recent history shows several infrastructure concerns, including an active ECB violation from January 2023 regarding an out-of-service device critical to building safety, and past issues with the boiler system in 2022 that were ultimately resolved.

The building's systems have undergone periodic inspections and maintenance, with records showing regular compliance with bedbug reporting requirements (with no infestations reported since 2020) and passing rodent inspections in 2013 and 2017. There have been multiple complaints regarding various building systems in recent years, including elevator issues and vibration concerns in 2023, though inspections did not warrant finding any violations in these cases. The property has maintained a relatively stable infestation history, with only one documented bedbug case in 2018, which was eradicated.