Free Building Background Check

811 Cortelyou Road

BROOKLYN, NY 11218 BBL 3053770043 85 units · 6 floors · 1941

While historically clean, our model detects a rising risk of severe maintenance issues in the next 12 months.

HPD violations vs. neighborhood
Class B/C violations on record vs. a typical building in Kensington
At or below average
avg 25.0
5
Fewer violations More violations

This building has 5 recorded HPD violations, at or below the Kensington average of 25.0.

Rent & eviction protection

Is 811 Cortelyou Road 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 1941
6 or more units
85 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 811 Cortelyou Road'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
18th percentile

Out of 893 buildings in this neighborhood, 161 have a higher predicted risk.

RiskiestSafest
Predicted violation outcome
17.7%
No serious
violations
60.2%
Some violations
(1–9)
22.0%
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.

Number of apartments

The number of residential units affects how the model interprets complaint and violation totals — more units means more potential sources.

Building size

Total residential square footage — a proxy for building scale and the number of systems (plumbing, HVAC, etc.) that can fail.

Emergency violations (past 7 years)

HPD violations classified as immediately dangerous — fires, raw sewage, no heat in winter.

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 811 Cortelyou Road report

Building characteristics
Total units85
Floors6
Year built1941
Gross area96,000 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.

801 Cortelyou Rd, New York, NY 11218
803 Cortelyou Rd, New York, NY 11218
805 Cortelyou Rd, New York, NY 11218
807 Cortelyou Rd, New York, NY 11218
809 Cortelyou Rd, New York, NY 11218
811 Cortelyou Rd, New York, NY 11218
813 Cortelyou Rd, New York, NY 11218
815 Cortelyou Rd, New York, NY 11218
817 Cortelyou Rd, New York, NY 11218
819 Cortelyou Rd, New York, NY 11218
821 Cortelyou Rd, New York, NY 11218
445 East 8th St, New York, NY 11218
447 East 8th St, New York, NY 11218
449 East 8th St, New York, NY 11218
451 East 8th St, New York, NY 11218
453 East 8th St, New York, NY 11218
386 East 9th St, New York, NY 11218
388 East 9th St, New York, NY 11218
390 East 9th St, New York, NY 11218
392 East 9th St, New York, NY 11218
394 East 9th St, New York, NY 11218
Who's behind the building

811 Cortelyou Road'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
811 Cortelyou Road Owners Corp.
Address
99 Park Avenue 14th F
New York, NY 10016
Landlord portfolio

Other properties owned.

Portfolio data hidden

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What residents say

Reviews from 811 Cortelyou Road 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

811 Cortelyou Road event timeline

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

2026
311+HPD Jan 30
Heat/Hot Water
Apartment Only

See all 33 events

Full history back to 2019 — violations, complaints, permits, bedbug filings, and more.

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Every record we have

Full data for 811 Cortelyou Road apartments

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

Side by side

How 811 Cortelyou Road compares to the neighborhood

This building against comparable properties in Kensington. 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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