604 20th Street, Brooklyn, NY 11218

The 5-unit, 3-story commercial property at 604 20th Street in Windsor Terrace, owned by Roman Katsnelson, was constructed in 1931 and has experienced several notable events in recent years. Most recently, in March 2023, the building received a Housing Maintenance Code violation related to the failure to file an annual bedbug report, though this appears to have been resolved by May 2025, with subsequent reports showing no infested units.

The building underwent significant construction work between 2019 and 2020, during which time two Department of Buildings complaints were filed - one for illegal after-hours work in June 2019 (which was determined to warrant no violation upon inspection), and a construction safety compliance complaint in March 2020 that resulted in a stop work order being fully rescinded in September 2020. During this construction period, two Environmental Control Board violations were issued to STROYBAT INC in early 2020: one for failure to maintain/display required site documents (resolved with no penalty), and another for sidewalk obstruction with a penalty of $6,250.

The building's permit history shows multiple permits being issued between 2019 and 2020, primarily for construction-related work including plumbing, electrical, and alteration permits, all under job number 320627229. The property has also maintained compliance with bedbug reporting requirements since 2024, with the most recent report for the period 2024-2025 showing no instances of infestation or eradication. While the building has experienced some regulatory scrutiny and construction-related issues in recent years, these appear to have been appropriately addressed, with no current outstanding violations on record as of July 2025.