5701 4th Avenue, Brooklyn, NY 11220
5701 4th Avenue is a 3-story, 4-unit old law tenement building located in Sunset Park, built in 1931 and currently owned by Nathan Siony. The property has experienced recurring plumbing issues, with multiple emergency complaints about toilet problems in late 2024 through early 2025, as well as concerning heating and hot water issues including dangerously scalding temperatures (184°F) documented in December 2024.
There are currently several open violations from a December 2024 inspection, including inadequate heating system access, hot water temperature control issues, and problems with self-closing doors in Apartment 2R. The building's common areas have also shown maintenance concerns, with open violations from May 2024 related to fire safety materials, wall conditions, and various encumbrances in the public hall areas.
Significant past issues include active Environmental Control Board violations from 2018 relating to the boiler and water heater systems, including problems with flue connections and boiler jacket placement, though some of these violations are marked as resolved. The building's maintenance history shows periodic pest control issues, with violations issued in 2024 regarding unsanitary conditions, and multiple HPD inspections have resulted in violation issuance across various complaint types including plumbing, heating, and general maintenance. The property has maintained a clean record for bedbug infestations over the past five years, with no reported cases since 2021, and previous pest issues were addressed as per HPD inspections.
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Building Characteristics
Total units | 4 |
---|---|
Year built | 1931 |
Total area | 4554 sq ft |
Floors | 3 |
Tax Abatements | None |
Building Class | OLD LAW TENEMENT |

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Key Building Statistics
Included Addresses
- 5701 4th Ave, New York, NY 11220
- 402 57th St, New York, NY 11220
- 404 57th St, New York, NY 11220
- 406 57th St, New York, NY 11220
- 408 57th St, New York, NY 11220
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