4211 Avenue K, Brooklyn, NY 11210

The 73-unit, 6-story building at 4211 Avenue K in Flatlands, constructed in 1959 and currently owned by 4200 Ave K Equities LLC, has experienced several significant maintenance and safety issues in recent years. Most notably, there have been recurring problems with heat and hot water in early 2025, multiple building-wide power outages (most recently in June 2025), and persistent sanitation issues including pests and unsanitary conditions. The building's elevator system has been a particular area of concern, with multiple complaints about single-device operation and no alternate service between 2019 and 2025, with an active complaint regarding this issue as of June 2025.

Violations related to fire safety systems, including missing signage and malfunctioning equipment, were recorded in 2023 with associated penalties. Apartment 5F has multiple open violations from a September 2024 inspection, including issues with water leaks, mold, and missing safety devices such as smoke and carbon monoxide detectors. The building has experienced intermittent heating issues, water leaks, and various maintenance problems throughout 2025, with multiple HPD inspections resulting in violation notices.

Recent complaints filed in June 2025 indicate continuing problems with pests, paint/plaster conditions, flooring, doors, and appliances. The property has documented bedbug infestations in two units in late 2023, though these were reportedly eradicated. While a rodent inspection in 2016 resulted in a passing grade, more recent pest control concerns have emerged. The building's infrastructure appears to be showing signs of age, with recurring complaints about basic services like heat and water, along with multiple open violations suggesting ongoing maintenance challenges.