19 St Nicholas Avenue
This building has a severe track record, and our model predicts major ongoing maintenance failures.
This building has 612 recorded HPD violations, above the Harlem average of 48.5.
Is 19 St Nicholas Avenue rent-stabilized?
Rent stabilization caps how much your rent can rise and protects your right to renew. Here's how this building scores on the four signals that usually point to it.
Based on public NYC records. Not legal advice — verify with the DHCR (Division of Housing and Community Renewal) at apps.hcr.ny.gov.
19 St Nicholas Avenue is a 6-story, 39-unit apartment building in Harlem, constructed in 1915 and currently owned by Scott Castellano. The building has experienced numerous maintenance issues in recent years, with particular concern around heating, plumbing, and pest control. Between April and June 2025, there were multiple complaints regarding heat and hot water issues affecting the entire building, though some were resolved through verification of repairs. The building has also faced ongoing challenges with rodent activity, as evidenced by multiple 311 complaints and inspections showing rat sightings and the need for bait application from 2024-2025. Significant building violations remain unresolved as of July 2025, including issues with a defective boiler system from 2023-2024, problems with carbon monoxide detectors in multiple apartments (2B and 3D), and various maintenance concerns such as water leaks, pest infestations, and safety system deficiencies. The elevator system has been a recurring concern, with multiple complaints in 2025 about its operation and safety features, and there are several active Environmental Control Board violations related to elevator and boiler systems, including an active penalty balance of $2,530 for unregistered boiler issues from November 2024.
The property has a documented history of pest control challenges, with recent 311 complaints and housing maintenance code violations citing unsanitary conditions and pest issues. The building's maintenance history shows multiple instances of failed inspections or inability to complete necessary inspections, particularly regarding heat and hot water systems, as well as various plumbing issues including problems with sinks, showers, and bathtub fixtures. Recent inspections in 2025 have shown consistent rat activity, prompting ongoing compliance inspections and bait applications. The building's management has also received multiple violations for failure to maintain proper safety systems, including problems with smoke detectors, carbon monoxide detectors, and building access systems. While the building has achieved some resolution of various maintenance issues through inspections and repairs, many significant violations remain active as of July 2025, including problems with the building's mechanical systems, safety features, and general maintenance standards.
How 19 St Nicholas Avenue's risk score is calculated
We trained a model on 7 years of city inspection data — HPD violation filings, tenant complaints, and owner track records across their entire portfolio. It estimates the probability that HPD inspectors will find serious or dangerous violations at this address in the next 12 months. Lower % = safer.
What the score means for you
Out of 2807 buildings in this neighborhood, 28 have a higher predicted risk.
violations
(1–9)
(10+)
What's driving this score
These are the three data points that most influenced this building's score — ranked by how much weight the model placed on each one.
Don't stop here — this is just the surface.
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What's in the 19 St Nicholas Avenue report
| Total units | 34 |
|---|---|
| Floors | 6 |
| Year built | 1915 |
| Gross area | 34,430 sq ft |
| Building class | — |
| Tax abatement | None |
Violations & complaints per year — solid line is historical record, dashed line is AI projection.
Included addresses
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19 St Nicholas Avenue's landlord & ownership
The people and companies registered to this building, the other properties they run, and their court record. A landlord's wider portfolio is often the best predictor of how your building will be treated.
Registered contact for this building.
New York, NY 10001
Other properties owned.
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19 St Nicholas Avenue event timeline
Violations, complaints, fines, and permits — the most recent records on file, in order.
See all 37 events
Full history back to 2005 — violations, complaints, permits, bedbug filings, and more.
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30+ public city datasets for this address — searchable and sortable.
What this is
Housing code violations issued by HPD against property conditions. Non-compliance with NYC's Housing Maintenance Code can result in violations and fines.
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What this is
Complaints filed with HPD about conditions violating the NYC Housing Maintenance Code or NY State Multiple Dwelling Law.
| Received | Category | Type | Status | Apartment |
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What this is
Service requests logged daily with the city through 311 and tracked to resolution. These are complaints that can be directed to specific city agencies.
| Created Date | Problem | Problem Detail | Agency Name | Status |
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What this is
All complaints received by the Department of Buildings, including those from 311 and complaints entered directly by DOB staff.
| Filed | Number | Status | Category | Disposition |
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What this is
Civil penalties and violation notices issued by the Department of Buildings for construction and building code violations.
| Issue Date | Category | Type | Description | Disposition |
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What this is
Summonses and penalties adjudicated by OATH (Office of Administrative Trials & Hearings) and the Environmental Control Board. DOB enforcement cases that have been heard and decided.
| Issue Date | Violation # | Status | Description | Penalty |
|---|---|---|---|---|
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Executed eviction warrants in NYC from 2017-present. Records of completed residential and commercial evictions processed through housing court.
| Executed Date | Docket # | Apartment | Type | Marshal |
|---|---|---|---|---|
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Recorded real estate transactions and property sales. Public records of building transfers and changes in ownership.
| Sale Date | Price | Building Class | Neighborhood | Apartment |
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What this is
Property owner reports of bedbug infestation status required by NYC law. Building owners must file annual reports on bedbug treatment and infestation history.
| Filing Date | Infested Units | Eradicated | Re-infested | Period End |
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What this is
NYC Department of Health & Mental Hygiene rodent inspection results. Records of inspections for rat and rodent infestation signs.
| Inspection Date | Type | Result |
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Construction and demolition permits issued by the Department of Buildings. Required for legal building, construction, and demolition activities in NYC.
| Filing Date | Type | Work | Floor | Description | Status | Issued |
|---|---|---|---|---|---|---|
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