523 West 147th Street, Manhattan, NY 10031

The two-family house at 523 West 147th Street in Hamilton Heights, owned by David Isaksson, has undergone significant rodent-related challenges over the past few years. The building, constructed in 1899, has shown a recurring pattern of rat activity, particularly between 2023 and 2025.

Most notably, during 2023, there were multiple rodent-related incidents, with three separate complaints in July alone, all of which were closed with inspections revealing rat activity. An earlier pattern of rodent issues was documented in March 2021, which also resulted in violations and follow-up inspections. The building's recent inspection history shows improvement, with initial rodent inspections in 2024 and 2025 resulting in "Passed" status, though a compliance inspection from October 2023 noted "Rat Activity." The property has also faced concerns regarding unauthorized short-term rentals, with two separate complaints about illegal hotel rooms in 2023.

Both investigations, conducted in June and February, were closed due to the inspector's inability to gain access on second final attempts. While these unauthorized rental concerns were a significant issue, the ongoing rodent management situation has been more persistent. It's important to note that the building's current inspections show improved compliance with rodent control measures, with all inspections from 2024 to 2025 passing, suggesting that recent management efforts may be addressing the previous challenges.