594 6th Street, Brooklyn, NY 11215

594 6th Street is a 4-story, 16-unit residential building located in Park Slope and owned by Nicholas Kotsonis. Built in 1905, this New Law Tenement structure has experienced several significant maintenance issues in recent years, most notably a cluster of heat and hot water complaints in February 2024.

During this period, there were multiple emergency complaints (10 in total) regarding heat and hot water issues, with inspections by the Department of Housing Preservation and Development (HPD) revealing varying access issues and conditions, though no violations were ultimately issued. The building has had recurring safety and maintenance concerns, including three housing maintenance code violations in 2023 related to apartment 3A, concerning missing smoke and carbon monoxide detectors, and a defective self-closing door.

The building's mechanical systems have required attention, with a Department of Buildings inspection in September 2020 highlighting multiple issues including a clogged boiler room fresh air louver, missing water heater safety discharge pipe, and holes near gas meters, resulting in a $310 penalty that was later resolved with a balance due of -$315. While there were two bedbug-related violations noted in 2022 and 2023, the property has maintained a clean record for pest infestations in recent filings, with the most recent report (June 2025) showing zero infested, eradicated, or re-infested units. The building has undergone regular rodent inspections, with the most recent inspection in November 2022 passing compliance, following an initial rat activity finding in October 2022.