431 Knickerbocker Avenue, Brooklyn, NY 11237

The 3-story, 4-unit tenement building at 431 Knickerbocker Avenue in Bushwick, built in 1931 and currently owned by Kmickerbocker 427 Llc, has experienced a number of significant maintenance and compliance issues over the past several years. Most recently, in 2025, there were two notable incidents involving potential safety concerns: a "Work Without a Permit" violation was recorded and served, and there were compliance inspections related to Local Law 188/17.

The building has had recurring issues with rodent activity, with inspection results showing significant rat activity in 2021, while more recent inspections in 2025 indicated improved conditions, though problems persisted with initial inspections showing rat activity as recently as May 2025. The property has also underwent various construction and maintenance work over the years, with multiple permits issued between 2019 and 2022 for electrical, plumbing, and other general work, including some related to a sidewalk shed violation in 2021 that resulted in a $2,400 penalty.

The building's bedbug situation appears to have stabilized, with the most recent reports from 2022-2023 showing zero infested units, though there were prior violations in 2021 and 2022 related to the failure to file annual bedbug reports, which were ultimately closed. Historical records from 2019-2020 indicate some construction-related enforcement actions, including a stop work order that was fully rescinded. While the property has faced various compliance issues over the years, recent records indicate improvements in certain areas, such as rodent control and bedbug management, though the building still requires ongoing monitoring to maintain these improvements.