21 West 100 Street
While historically clean, our model detects a rising risk of severe maintenance issues in the next 12 months.
This building has 1 recorded HPD violations, at or below the Upper West Side average of 14.1.
Is 21 West 100 Street 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.
21 West 100th Street is a five-story, nine-unit Old Law Tenement building located in Manhattan's Upper West Side, owned by 21 West 100th Street Owners Corp and constructed in 1915. The building has experienced several maintenance and compliance issues over recent years, with the most concerning being three active violations (as of June 2023) related to the failure to file external low-pressure inspections for the years 2018 and 2019. There was a similar violation issued in 2019 for not filing the 2017 boiler inspection report, though this was ultimately dismissed in January 2021. Additionally, the building received an A-class housing maintenance code violation in 2021 concerning the filing of annual bedbug reports, though subsequent filings from 2021 through 2024 show no infested units or eradication efforts required, suggesting this issue may have been resolved.
The building underwent a rodent inspection in July 2024 where it passed, indicating regulatory compliance at that time. However, the property has had fluctuating rodent activity in the past, with rat activity noted in October 2023, compliance inspection in November 2023, followed by another passed inspection in July 2024. The building's recent history shows improved conditions regarding both bedbugs and rodent presence, with 2024 bedbug reports showing zero infestation cases, and the most recent rat inspection indicating no current issues. The property has maintained consistent records of bedbug reporting since 2021, with the most recent reports from 2023-2024 showing no infestations.
How 21 West 100 Street'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 3016 buildings in this neighborhood, 1960 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 21 West 100 Street report
| Total units | 9 |
|---|---|
| Floors | 5 |
| Year built | 1915 |
| Gross area | 7,800 sq ft |
| Building class | — |
| Tax abatement | None |
Violations & complaints per year — solid line is historical record, dashed line is AI projection.
21 West 100 Street'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 10025
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21 West 100 Street event timeline
Violations, complaints, fines, and permits — the most recent records on file, in order.
See all 10 events
Full history back to 2021 — 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.
| Inspection Date | Class | Category | Description | Status |
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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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Cancel anytime · Data sourced from NYC Open Data, HPD, DOB, DOF & the courts