318 Union Avenue, Brooklyn, NY 11211

318 Union Avenue is a 4-story, 8-unit old law tenement building located in Williamsburg, New York, built in 1920 and currently owned by Zulma Mercado. The building has experienced significant and persistent heating and hot water issues, most notably in September 2024, when multiple emergency complaints were filed regarding building-wide heat and hot water problems.

While some of these complaints were closed due to being duplicates of existing reports, at least one resulted in violations being issued. The building has also encountered safety concerns, particularly regarding door maintenance, with several violations documented in September 2024 related to defective or missing self-closing doors, including issues with hinges and latches at various locations such as the vestibule, public hall, and cellar. The property's maintenance history shows recurring challenges with both rodent and bedbug management.

While recent bedbug reports from 2025 indicate no current infestations, the building had multiple requirements to file annual bedbug reports between 2021-2024, suggesting prior issues. Rodent activity has been documented consistently from early 2023, with inspections showing rat activity in multiple months and bait applications being required regularly, though a compliance inspection in March 2024 resulted in a "Passed" status. The building's violation history reveals a mixture of Class A and Class C violations, with the most critical recent issues centered around heat and hot water supply, building security (due to door problems), and historical pest management challenges.