10031 4th Avenue, Brooklyn, NY 11209

The 6-story residential building at 10031 4th Avenue in Fort Hamilton, owned by Ronald Katz, has experienced several recurring issues over the past two years, particularly concerning indoor air quality. Between June 2024 and June 2025, there have been multiple reports of chemical vapors, gases, and odors, with the most recent complaint still marked as "In Progress" as of June 2025. Notably, there were also mold issues documented in August 2024 (Apartment 4M), resulting in violations for failure to address the condition properly.

The building's maintenance history reveals ongoing concerns with building systems and safety features. In 2024, a comprehensive inspection of Apartment 4M resulted in several violations, including defective smoke detectors, carbon monoxide detectors, and various bathroom repairs needed (including mold removal, plumbing repairs, and tile replacement). The elevator system has faced multiple compliance issues, with several ECB violations in 2022-2023 citing problems with gibs, car phone functionality, and piston leaks, though most were resolved without penalties.

The building underwent several permit issuances for elevator work between 2020-2023, and there have been minimal issues with bedbugs, with only one documented case in 2022 and none reported since 2023. The property has experienced periodic violations related to construction work, particularly regarding final inspections in 2022, resulting in fines that appear to have been resolved. The building's historical maintenance records also show various plumbing and heating issues dating back to 2019-2021, though these were generally addressed promptly. The most concerning recent pattern is the ongoing air quality complaints, with multiple incidents throughout late 2024 and into 2025, suggesting a persistent environmental issue that has not been fully resolved despite multiple notifications to management.