921 St Marks Avenue, Brooklyn, NY 11213

The 20-unit, 4-story building at 921 St Marks Avenue in Crown Heights, owned by Zalmen Biederman, has experienced several significant issues over the last two years (2024-2025). Most notably, there have been recurring heat and hot water problems, with multiple complaints filed between April and May 2025, some of which remain open. The building has also faced challenges with unsanitary conditions, including garbage storage issues reported in May 2025, though HPD inspections found these did not violate housing laws.

A concerning pattern of violations emerged in 2022, with Class C violations related to heating and hot water problems specifically affecting Apartment 3C, along with electrical service issues. The building's maintenance history shows regular bedbug reporting with no infestations reported from 2020 through 2024, and rat activity was documented between 2018-2020, though more recent inspections have shown passing results. The building's recent history reveals ongoing maintenance challenges, particularly regarding heating systems and general upkeep. Three active Department of Buildings violations from 2023 relate to failure to file external low-pressure inspections for 2018 and 2019, as well as a 2017 boiler inspection report.

During construction work in 2018, several violations were recorded against Skyline Builders NYC Corp, including issues with fire stopping, excessive dust in common areas, and failure to maintain proper housekeeping. These violations resulted in various penalties, though most have been resolved. The building has shown general improvement in pest control and rodent inspections since 2020, with consistent bedbug reporting showing no infestations. However, the ongoing heat and hot water issues documented in 2025 suggest continuing challenges with building systems maintenance.