51 5th Avenue, Brooklyn, NY 11217

51 5th Avenue is a 4-story, 6-unit old law tenement building constructed in 1920, currently owned by Alex Kaskel and located in Park Slope. The building has experienced several notable issues over recent years, with the most significant concerns centering on lead paint violations and building safety. As of May 2024, there are open violations related to lead paint hazards in Apartment 3L, including failure to provide required records and properly notify occupants, while a recent inspection in May 2024 found an illegal fastening lockable eye and hasp at the scuttle ladder opening cover at the roof exit, which was certified for correction on May 24, 2024.

The building has a history of maintenance issues, including multiple complaints in 2020 regarding unsanitary garbage/recycling storage conditions that the Department of Housing Preservation and Development could not inspect, and a heat/hot water complaint in January 2020 that was reported as resolved. The property has maintained a generally good record regarding pest control, as evidenced by its bedbug reporting history from 2019 through 2024, showing no reported infestations in any dwelling units during this period. Rodent inspections in 2018 yielded mixed results, with an initial failure followed by successful compliance.

A recent gas utility referral complaint was filed in April 2025 and remains active. The building also had a storefront violation in 2023 related to an illegal sign that resulted in a $620 penalty, though this appears to involve a business operation rather than the residential portion of the building. The property has undergone various maintenance and repair work over the years, including addressing multiple lead paint hazards in 2018, window repairs, and the removal of illegal alterations, though some violations from 2018 related to lead paint and window problems in Apartment 3L remain open as of 2024.