542 9th Street, Brooklyn, NY 11215

542 9th Street is a 3-story, 3-unit Old Law Tenement building in South Slope, Brooklyn, constructed in 1896 and currently owned by Ellen Thatos. The building has experienced several significant maintenance issues, particularly regarding heating systems. In late 2018 and early 2019, there were multiple complaints about heat and hot water problems affecting both individual apartments and the entire building, though inspections often found no access to verify the conditions.

Additionally, there are several open violations from 2018-2019 related to Apartment 1, including inadequate heating, flooring issues, and unauthorized alterations involving subgrade excavation, along with some maintenance concerns about the public hall and basement access. More recent issues have included rodent sightings, with the most recent inspection in April 2025 showing no rat activity, though there were previous detections in 2024-2025. The building has passed recent health inspections, including a 2025 inspection for unsanitary pigeon conditions.

While there were multiple bedbug violation notices from 2019-2024 requiring annual reporting, the most recent bedbug report (July 2024) indicated no current infestations or eradicated units. A concerning pattern of heating-related complaints is noted in late 2018 through early 2019, with multiple complaints about heat and hot water issues, though many inspections were unable to gain access to verify the problems. The property also had one illegal conversion complaint in September 2018, but access was denied for inspection. On a positive note, recent inspections indicate improved rodent control, with the most recent April 2025 inspection passing without issues.