666 St Nicholas Avenue, Manhattan, NY 10030

The 50-unit, 6-story tenement building at 666 St. Nicholas Avenue in Harlem, owned by Mark Scharfman, has experienced recurring maintenance issues primarily related to heating, plumbing, and sanitation over the past year. Most recently, in April 2025, multiple complaints were filed regarding unsanitary conditions and plumbing issues (including basin/sink problems), though inspectors were unable to gain access to the affected units for verification.

Between December 2024 and February 2025, there were also heat and hot water complaints affecting the entire building, with some issues resolved upon follow-up verification, while others remained unverified due to access issues. The building has a concerning history of pest issues, with multiple violations recorded between 2024-2025, including an active pest problem documented in Apartment 25 in November 2024, along with various other pest-related complaints and violations throughout 2025. The elevator system has presented ongoing concerns, with multiple complaints about the single device's lack of alternate service between 2021 and 2024, though investigations consistently found no violations warranting penalties.

Other maintenance issues have included plumbing problems, flooring concerns, and various repairs needed in different apartments, as evidenced by multiple Housing Maintenance Code violations throughout 2024-2025. While the building's most recent rodent inspections (throughout 2024-2025) have consistently passed, indicating improved pest control, the building's documented history shows recurring challenges with building systems and maintenance access. The property has carried some Environmental Control Board violations regarding emergency exit conditions from 2022, though these particular violations are currently marked as "active" with a $625 penalty. However, the building has maintained an active bedbug-free status in recent annual filings from 2021-2024, with no reported infestations in the past three years.