644 West 173rd Street, Manhattan, NY 10032

644 West 173rd Street is a 5-story, 30-unit New Law tenement building constructed in 1917, currently owned by Fernando Alba. The building has experienced recurring issues with heat and hot water systems, as evidenced by multiple emergency complaints in 2025 and 2024 affecting both individual apartments and the entire building.

In 2024, significant maintenance issues were documented in apartment 4C, including violations related to broken floor tiles, wall paint requirements, and other repair needs; these violations were certified as corrected by October 2024. The building has a documented history of rodent activity, with inspections in 2025, 2024, and earlier years showing persistent rat presence despite some passing inspections in 2023-2022. Multiple housing maintenance code violations have been issued over the years, including a 2024 Class C violation for mouse infestation in apartment A3 and a 2022 Class B violation for a defective smoke detector in apartment C4.

The property has also faced administrative challenges regarding energy reporting requirements, with active violations for failure to file benchmarking reports and display energy efficiency scores as required by the NYC Administrative Code since 2021. While there have been no documented bedbug infestations in recent years (2019-2024), and the building's illegal hotel room complaints from 2018-2019 resulted in inspectors being unable to gain access for verification, the recurring issues with heating systems, pest control, and maintenance violations suggest ongoing challenges with building upkeep. The property appears to have maintained compliance with bedbug eradication protocols, as evidenced by zero infested units reported in the past seven filing periods.