433 West 21st Street, Manhattan, NY 10011

433 West 21st Street is an 11-story, 69-unit Class A residential building in Chelsea, built in 1930 and currently owned by Richard Mason. The building has experienced recurring maintenance issues in recent months, with multiple open complaints regarding janitorial/supervisor-related concerns filed between April and June 2025.

Of particular note is a recent emergency mold complaint from June 2025, and a history of pest-related problems including rodent inspections showing persistent activity throughout 2024-2025, with multiple bait applications recorded. The building experienced heat and hot water issues in December 2024 affecting the entire building, though these complaints were closed after inspection. The property has several active violations with the Department of Buildings, including multiple failures to submit required Energy Efficiency Reports (EER) for the years 2019-2023, and a Cycle 9A report for a critical examination of exterior walls and appurtenances with a penalty of $6,250.

Apartment 9A has multiple open Housing Maintenance Code violations from 2024 related to defective plastered surfaces and paint requirements, while Apartment 6E has violations for pest infestations. The building's maintenance history shows regular 311 complaints and Housing Maintenance Code issues, with particular attention needed for the recurring janitorial/supervisor-related complaints. The property maintains a clean record with no reported bedbug infestations in recent years, and while there have been several general maintenance violations, many have been promptly addressed while others remain open for resolution.