340 Mcguinness Boulevard, Brooklyn, NY 11222

340 McGuinness Boulevard is a 3-story, 6-unit Old Law Tenement building in Greenpoint, built in 1930 and currently owned by 340 McGuinness LLC. The property has experienced recurring maintenance issues in recent years, with a notable cluster of electrical problems in 2025 including multiple reports of no lighting, power outages, and corresponding violations issued by HPD. The building has also faced challenges with access for inspections, as evidenced by several complaints in 2025 regarding lighting, refrigeration, door issues, and wall conditions where inspectors were unable to gain access.

A significant concern emerged in 2023 with multiple violations related to self-closing doors in the cellar, and unauthorized modifications were documented including illegal Class "A" apartment conversions in the cellar with water and waste lines installed for bathrooms and sinks. The building's violation history shows consistent patterns of maintenance issues, particularly regarding egress, fire safety, and unauthorized modifications. In 2023, violations were issued for exposed electrical wiring in the cellar, and more serious concerns were documented regarding fire stopping requirements and work performed without proper permits.

The property has been subject to multiple complaints about illegal conversions between 2020-2023, suggesting ongoing concerns about unauthorized modifications to the building's layout. While the building has maintained a record of no bedbug infestations in recent reporting periods from 2022-2025, the persistent nature of other maintenance issues raises questions about overall building maintenance. The most recent permits on record show limited activity, with only one permit issued in February 2021.