512 48th Street, Brooklyn, NY 11220

The 8-unit, 4-story residential building at 512 48th Street in Sunset Park, owned by Conghui Zheng, has experienced several recurring maintenance and safety issues since 2020. Most notably, there are ongoing rodent problems, with inspections in 2025 (July) and 2025 (May) both confirming rat activity. The property has multiple open violations as of 2025, including failures to comply with various safety inspections and requirements.

A significant cluster of violations was identified in April 2024 relating to apartment 4R, including issues with window frames, mold, smoke detector functionality, carbon monoxide detector functionality, and electrical outlets. These violations were categorized as Class A and B, indicating varying levels of severity. Other concerning incidents include a heat and hot water emergency in November 2023 affecting the entire building, and multiple historical rodent sightings between 2020 and 2025.

The building's maintenance record shows attention to various infrastructure issues, with several non-emergency complaints in 2024 including electrical lighting problems, door/window issues, wall conditions, and pest control concerns. There are also active Department of Buildings violations as of 2025 related to failure to file required annual boiler and low-pressure inspection reports between 2018-2023. The property has a documented history of rodent infestations, with multiple inspections showing rat activity between 2018 and 2025, though some inspections in 2018 did pass. While the building has received permits for plumbing work in 2019, a potentially concerning permit notice from 2019 indicated issues with the plumber's license, suggesting some regulatory compliance history worth noting.