231 West 121st Street, Manhattan, NY 10027

231 West 121st Street is a 5-story, 21-unit Old Law Tenement building constructed in 1910 in Harlem, currently owned by 133 Equities LLC. The building has experienced recurring issues with its heating and hot water systems, with numerous emergency complaints filed between 2022 and 2025, including recent complaints in early 2025. The Department of Housing Preservation and Development (HPD) has conducted multiple investigations of these complaints, often facing access issues but confirming violations in some cases, particularly in November 2023 when inadequate heating and hot water were documented and violations issued.

The building has also faced mechanical and safety challenges, including a significant boiler inspection issue in 2025, with inspectors unable to gain access to assess the system. The property has documented various housing maintenance violations, including issues with the sprinklers and hot water systems in specific apartments (notably 5D), as well as problems with self-closing doors in the dumbwaiter chute on multiple floors in 2022. While there have been reports of bedbug infestations in past years (2019 and 2021), recent filings from 2022 through 2024 show no active infestations.

The building's rodent inspection record shows mixed results, with several passed inspections between 2021 and 2025, though some compliance failures were noted in mid-2024. Additionally, there are outstanding violations related to the failure to file the 2022 external low-pressure inspection report. Despite these issues, the building's most recent bedbug and rodent control filings indicate improved management of these concerns, with no current infestations reported.