43 Underhill Avenue, Brooklyn, NY 11238
The 10-unit, 4-story Old Law Tenement at 43 Underhill Avenue in Prospect Heights, owned by Jeffrey Groner and built in 1931, has experienced several significant maintenance issues in recent years, most notably regarding water supply and plumbing systems. In June 2025, there were two separate water supply incidents within three days, both of which HPD attempted but failed to inspect, and as of June 29, 2025, there is an open emergency mold complaint.
The building has a documented history of heat and hot water problems, particularly in late 2018 when multiple complaints emerged regarding lack of services throughout the building, though these were reportedly resolved. In 2019, specific safety violations were recorded in Apartment C2 related to smoke and carbon monoxide detectors, self-closing doors, and temporary furniture obstructions, all of which were eventually addressed.
Recent inspections have revealed rodent activity, with multiple baiting operations conducted between September 2024 and December 2024, and an initial rat activity finding in May 2025. The building's systems have been subject to multiple service requests and inspections, with several instances where HPD could not gain access to units for verification. All bedbug reporting from 2018 through 2024 shows zero infested or re-infested units, indicating successful management of this particular issue.
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Building Characteristics
Total units | 10 |
---|---|
Year built | 1931 |
Total area | 7100 sq ft |
Floors | 4 |
Tax Abatements | None |
Building Class | OLD LAW TENEMENT |

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Key Building Statistics
Included Addresses
- 759 Dean St, New York, NY 11238
- 43 Underhill Ave, New York, NY 11238
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