8425 5th Avenue, Brooklyn, NY 11209
The 4-story, 9-unit New Law tenement building at 8425 5th Avenue in Bay Ridge, owned by Mary Vlahos and dating back to 1924, has experienced several significant issues in recent years that merit attention. Most notably, in May 2025, there were multiple heat and hot water complaints from the entire building, with one incident requiring emergency response from HPD.
Additionally, in the same month, there was a window frame issue that resulted in violations being issued to the property owner. The building has persistent open violations regarding annual bedbug reporting requirements from 2019-2024 that remain unresolved. Other historical concerns include an electrical power outage in 2021, cooking gas issues in 2019, and a water supply problem that occurred in 2019, though most of these older complaints have been closed.
The property currently faces two active Department of Buildings violations from 2023 regarding the failure to file external low-pressure inspections for both 2020 and 2022. A boiler-related complaint from March 2025 was inspected and no violations were found at that time. A Department of Buildings electrical wiring inspection in 2021 resulted in an inspector being unable to gain access to the unit, though this issue was categorized as "In Progress." The most recent permit records show a permit was issued in August 2019, though the specific details of this permit were not provided in the data.
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Building Characteristics
Total units | 9 |
---|---|
Year built | 1924 |
Total area | 8548 sq ft |
Floors | 4 |
Tax Abatements | None |
Building Class | NEW LAW TENEMENT |

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Key Building Statistics
Included Addresses
- 8425 5th Ave, New York, NY 11209
- 501 85th St, New York, NY 11209
- 503 85th St, New York, NY 11209
- 505 85th St, New York, NY 11209
- 507 85th St, New York, NY 11209
- 509 85th St, New York, NY 11209
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