504 West 126th Street, Manhattan, NY 10027

504 West 126th Street is a 5-story, 9-unit Old Law Tenement building located in Harlem and built in 1901, currently owned by Donald Clayton. The property has experienced persistent maintenance and pest control challenges throughout 2023-2025, with particular concerns about heat/hot water issues in May 2025 affecting the entire building, as well as multiple rodent problems. Most recently, in June 2025, there were multiple complaints about rat sightings, and an inspection confirmed rat activity with violations recorded.

The building has also faced significant hygiene and maintenance issues, including mold, pest infestations, and water leak complaints in June 2025, with violations issued for unsanitary conditions related to pests. Earlier violations from November 2024 indicate multiple problems in apartments 3A and 4C, including mold, rodent infestation, broken fixtures, and missing safety equipment such as smoke and carbon monoxide detectors. The property has a history of heat and water supply problems, with multiple emergency complaints recorded in May 2025.

There have been recurring issues with illegal commercial/industrial use complaints in the surrounding area, though inspections often found no violations. An active ECB violation as of 2023 indicates that the lobby reception community room was improperly utilized as the "Genesis Museum of International" space, with a penalty of $1,250. While the building has had some rodent activity in 2023-2025, recent bedbug reports from 2022-2024 show no documented infestations. Recent rodent inspections show mixed results, with the most recent inspection in April 2025 passing, though this has not prevented subsequent complaints and violations.