3935 Blackstone Avenue, Bronx, NY 10471

3935 Blackstone Avenue is a 12-story, 123-unit residential building located in Riverdale, completed in 1960 and currently owned by Melissa Pabon. The building has experienced recurring issues with heating and hot water systems, with three reported outages affecting the entire building (most recently in February 2025 and November 2019) and two apartment-specific outages (February 2021 and March 2020), though in some cases, tenants reported that services had been restored by the time inspectors arrived. A radiator plumbing complaint was filed in March 2023, which remains unresolved, and another was reported in an earlier incident.

The Department of Buildings conducted multiple inspections in 2023 (April-June) for tenant safety and compliance tracking, finding no violations at the time of inspection. The building has experienced two bedbug infestations in recent years: one documented in the 2023-2024 reporting period affecting two units (both eradicated), and a previous case from 2019-2020 involving one unit. The building has had some regulatory compliance issues, including a violation in 2023 for failing to file the FISP Cycle 9B technical report by the deadline, though this was later dismissed in May 2024.

Previous violations for energy efficiency score display requirements were also dismissed in 2022. Periodic inspections and complaints regarding various permit-related matters have been conducted, including a 2020 complaint about work without a permit, which resulted in no violations being found. The most recent records indicate ongoing attention to heating system maintenance, with multiple emergency complaints filed throughout the building's recent history, suggesting this remains a persistent maintenance challenge.