503 West 121st Street, Manhattan, NY 10027

503 West 121st Street is a 6-story, 30-unit residential building constructed in 1910, currently owned by Monica Kuth and classified as a New Law Single Room Occupancy property. The building has experienced several notable issues over recent years, with the most recent being an emergency porch/balcony complaint in April 2024 that was investigated but resulted in no violations. There has been recurring bedbug reporting irregularity, with one reported case in 2024 (the first infestation since 2019), and multiple years where the annual bedbug report filing requirement was not properly met between 2021-2024.

The building has faced multiple building safety and maintenance challenges, including an active violation regarding the failure to file FISP Cycle 9A technical report by 02/21/2022, and failures to submit required benchmarking reports of energy use between 2019-2022. The property has a documented history of elevator issues, with a complaint in 2021 regarding non-functioning phone service that resulted in an Oath violation. More recently, in 2024, there was a complaint about illegal after-hours work that was inspected but found to have no warrant for violation.

The building has maintained good rodent inspection results, consistently passing all inspections from 2016 through 2025. Furthermore, there are significant outstanding environmental violations, including an active ECB violation from 2022 regarding the failure to submit an acceptable required Cycle 9A report of critical examination documenting the condition of exterior walls, with a penalty of $6,250 imposed. While the building appears to be actively addressing various maintenance issues, the pattern of cancelled or unmet regulatory requirements over recent years suggests ongoing challenges with compliance to housing maintenance code requirements.