Free Building Background Check

840 West End Avenue

MANHATTAN, NY 10025 BBL 1018730001 40 units · 6 floors · 1904

This building has a severe track record, and our model predicts major ongoing maintenance failures.

HPD violations vs. neighborhood
Class B/C violations on record vs. a typical building in Upper West Side
Above average
avg 14.1
111
Fewer violations More violations

This building has 111 recorded HPD violations, above the Upper West Side average of 14.1.

Rent & eviction protection

Is 840 West End 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.

Built before 1974
Built 1904
6 or more units
40 units
Registered with RGB
Not found
421-A / J-51 abatement
None found
Potential rent stabilization. Building age and size suggest eligibility — confirm with the DHCR (Division of Housing and Community Renewal) or request a rent history.

Based on public NYC records. Not legal advice — verify with the DHCR (Division of Housing and Community Renewal) at apps.hcr.ny.gov.

Augrented Insights
AI summary · updated June 2026

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How we score buildings

How 840 West End 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

Neighborhood percentile
3th percentile

Out of 3016 buildings in this neighborhood, 90 have a higher predicted risk.

RiskiestSafest
Predicted violation outcome
1.1%
No serious
violations
50.7%
Some violations
(1–9)
48.1%
Many violations
(10+)
Risk factors

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.

Serious violations last 1–2 years

HPD found serious or dangerous conditions at this address recently — the strongest signal of problems ahead.

311 housing calls (past 7 years)

311 calls from or about this address logged as housing-related over 7 years.

Hazardous violations (past 7 years)

HPD violations classified as hazardous — things like mold, peeling lead paint, or broken heat.

Don't stop here — this is just the surface.

The full report adds 30+ data sets, complete violation history, landlord portfolio and court record. Or keep reading free:

What's in the 840 West End Avenue report

Building characteristics
Total units40
Floors6
Year built1904
Gross area46,607 sq ft
Building class
Tax abatementNone
Issue trend & model projection

Violations & complaints per year — solid line is historical record, dashed line is AI projection.

Multiple entrances & addresses

Included addresses

All street addresses that share this building's BBL and are covered by this report.

257 West 101st St, New York, NY 10025
840 West End Ave, New York, NY 10025
842 West End Ave, New York, NY 10025
844 West End Ave, New York, NY 10025
846 West End Ave, New York, NY 10025
Who's behind the building

840 West End 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.

Corporate Owner

Registered contact for this building.

Name
Thor 840 West End Avenue LLC
Address
2361 Nostrand Ave 601
Brooklyn, NY 11210
Landlord portfolio

Other properties owned.

Portfolio data hidden

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What residents say

Reviews from 840 West End Avenue tenants

Real experiences from people who have lived here. Share your honest feedback to help others make informed decisions.

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On the map

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The story over time

840 West End Avenue event timeline

Violations, complaints, fines, and permits — the most recent records on file, in order.

2026
HPD Violation Apr 29
Class A violation
(A) § Hmc:File Annual Bedbug Report In Accordance With Hpd Rule As Described On The Back Of This Notice Of Violation Or As Described On Hpd…
HPD Violation Apr 18
Class B violation

See all 27 events

Full history back to 2003 — violations, complaints, permits, bedbug filings, and more.

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Every record we have

Full data for 840 West End Avenue apartments

30+ public city datasets for this address — searchable and sortable.

Side by side

How 840 West End Avenue compares to the neighborhood

This building against comparable properties in Upper West Side. Toggle filters to narrow the peer group.

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Cancel anytime · Data sourced from NYC Open Data, HPD, DOB, DOF & the courts

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