401 East 84th Street, Manhattan, NY 10028

401 East 84th Street is a 28-story, 85-unit residential condominium building located in the Upper East Side, completed in 1986 and currently owned by James Gallagher. The building has experienced several significant maintenance and compliance issues in recent years, with the most pressing concern being an ongoing Department of Health and Mental Hygiene investigation into construction lead dust in common areas and apartments since November 2022. In early 2025, the building underwent multiple plumbing and maintenance issues, resulting in several complaints including radiator problems, water leaks, and issues with walls, ceilings, cabinets, and flooring, though all were resolved within a few days.

The building's history includes three notable Department of Buildings (DOB) complaints between 2022-2023 regarding unauthorized work, illegal conversions, and privately owned public space non-compliance; however, inspections found no violations warranting penalties in these cases. The building experienced two environmental control board violations in 2019 related to construction safety and rigging concerns during work on the roof level, which were resolved with no penalties. One active violation from 2018 regarding zoning conditions in the privately owned public space remains on record with a $4,000 penalty, though current payment status shows $0.

The property has maintained a clean record regarding bedbugs since at least 2018, with no reported infestations or eradications in the past seven years. Regular rodent inspections between 2010-2019 generally passed, with only one instance of rat activity noted in April 2017. The building has also demonstrated proactive maintenance with multiple permit issuances between 2019-2021 for various construction and maintenance work, suggesting ongoing investment in property upkeep.