343 West 21st Street, Manhattan, NY 10011

343 West 21st Street is a 3-story, 15-unit residential building in Chelsea, constructed in 1920 and currently owned by Bonnie Hegarty-diaz. The property has experienced several notable issues over recent years, with the most significant concerns relating to heating system problems in October 2020, when emergency heat/hot water complaints were logged for the entire building. In 2018, there were reports of pest-related sanitary conditions, though no violations were issued following HPD inspections.

The building's safety systems have required attention, as evidenced by four open violations from March 2018 related to safety notices and door requirements, including the need for self-closing doors at Apartment 1B, gas leak procedures, housing information guide notifications, and proper display of inspection certificates. The building's mechanical systems have been a continuing focus, with a boiler-related violation issued in 2021 for missing components and chimney issues, resulting in a $625 penalty. Historical inspections and complaints show a pattern of heating system challenges, though these appear to have been addressed when reported.

The property has maintained a clean record regarding bedbug infestations over the past seven years, with zero reported cases in the most recent annual filings through 2024. While there was an initial rodent activity report in 2019, subsequent inspections have consistently passed, including the most recent rodent inspections in 2025. The building's maintenance history shows regular responses to identified issues, though some violations remain open as of the latest available data, particularly regarding the posting of required safety notices.