143 Montague Street, Brooklyn, NY 11201

143 Montague Street is a 6-unit, 4-story residential building in Brooklyn Heights, constructed in 1860 and currently owned by Uri Koptiev. The property has experienced significant recent activity regarding its residential status, with multiple violations issued in May 2024 related to illegal transient occupancy of Apartment 3F on the second floor, including failures to maintain proper egress, sprinkler, and fire alarm systems, resulting in fines totaling $7,500. There are also active violations from June 2023 for failure to file external low-pressure inspections for 2018 and 2019.

The building underwent a heat and hot water emergency situation in late 2022, though this was resolved according to tenant reports. The property has been subject to numerous health department inspections and complaints, particularly in 2025, with multiple food establishment-related service requests all closed, and one food poisoning complaint from April 2023 still in progress. There was a period of concerning safety and maintenance issues in 2019-2020, with multiple emergency housing maintenance code complaints regarding smoke detectors, carbon monoxide detectors, electrical wiring, and unsanitary conditions/mold, all of which were closed.

The building has consistently demonstrated compliance with rodent inspections, passing all inspections from 2013 through 2025, though there was a report of rat activity in April 2024. The bedbug reporting for the past four years indicates no infestations or eradication efforts needed, suggesting effective pest management practices. Recent complaints about illegal hotel rooms in the building were resolved with Oath violations served between 2022 and 2025.