621 Lefferts Avenue, Brooklyn, NY 11203
The 6-story, 122-unit residential building at 621 Lefferts Avenue, built in 1926 and currently owned by Michael Niamonitakis, has experienced several significant maintenance and safety issues over the past year. In recent months (2025), there have been multiple complaints regarding flooring conditions, wall maintenance, and building systems, including heat/hot water and plumbing issues. Notably, there were three flooring complaints in June 2025, and multiple heat/hot water complaints in April 2025, though some were resolved promptly.
The building has a concerning pattern of building-wide system failures, with three heating/hot water complaints in April 2025 alone, and violations related to self-closing doors in the public hall on the 5th story documented in December 2024. The property has also faced structural and safety concerns, particularly regarding building stability and electrical systems. In June 2025, complaints about building shaking/vibration and electrical wiring were investigated, though no violations were found.
An active ECB violation from November 2024 cites failure to maintain building walls and appurtenances, including issues with window lintels, masonry cracks, and chipped paint. The building's elevator systems have a history of inspection issues, with multiple violations and complaints documented between 2019-2021. While the building has typically had zero reported bedbug infestations in recent years (2021-2024), and passed rodent inspections in 2011, the frequency of recent maintenance complaints suggests ongoing challenges with building upkeep.
621 Lefferts Avenue Report Contents
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Building Characteristics
Total units | 122 |
---|---|
Year built | 1926 |
Total area | 146400 sq ft |
Floors | 6 |
Tax Abatements | None |
Building Class | NEW LAW TENEMENT |

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Key Building Statistics
Included Addresses
- 484 Albany Ave, New York, NY 11203
- 486 Albany Ave, New York, NY 11203
- 488 Albany Ave, New York, NY 11203
- 490 Albany Ave, New York, NY 11203
- 492 Albany Ave, New York, NY 11203
- 494 Albany Ave, New York, NY 11203
- 621 Lefferts Ave, New York, NY 11203
- 623 Lefferts Ave, New York, NY 11203
- 625 Lefferts Ave, New York, NY 11203
- 627 Lefferts Ave, New York, NY 11203
- 629 Lefferts Ave, New York, NY 11203
- 631 Lefferts Ave, New York, NY 11203
- 633 Lefferts Ave, New York, NY 11203
- 635 Lefferts Ave, New York, NY 11203
- 637 Lefferts Ave, New York, NY 11203
- 639 Lefferts Ave, New York, NY 11203
- 641 Lefferts Ave, New York, NY 11203
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