Free Building Background Check

5221 Flatlands Avenue

BROOKLYN, NY 11234 BBL 3078000039 24 units · 3 floors · 2006

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 Flatlands
At or below average
avg 23.6
17
Fewer violations More violations

This building has 17 recorded HPD violations, at or below the Flatlands average of 23.6.

Rent & eviction protection

Is 5221 Flatlands 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 2006
6 or more units
24 units
Registered with RGB
Not found
421-A / J-51 abatement
None found
Likely not rent stabilized. This building doesn't show the typical signals — but confirm with the DHCR (Division of Housing and Community Renewal) if you suspect otherwise.

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 5221 Flatlands 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
17th percentile

Out of 412 buildings in this neighborhood, 70 have a higher predicted risk.

RiskiestSafest
Predicted violation outcome
13.4%
No serious
violations
58.1%
Some violations
(1–9)
28.5%
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.

Tenant HPD complaints (past 7 years)

Formal complaints tenants filed with HPD about this address over the last 7 years.

Building size

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

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 5221 Flatlands Avenue report

Building characteristics
Total units24
Floors3
Year built2006
Gross area24,152 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.

5220 Avenue J, New York, NY 11234
5222 Avenue J, New York, NY 11234
1260 East 53rd St, New York, NY 11234
1262 East 53rd St, New York, NY 11234
5213 Flatlands Ave, New York, NY 11234
5215 Flatlands Ave, New York, NY 11234
5217 Flatlands Ave, New York, NY 11234
5219 Flatlands Ave, New York, NY 11234
5221 Flatlands Ave, New York, NY 11234
5223 Flatlands Ave, New York, NY 11234
5225 Flatlands Ave, New York, NY 11234
5227 Flatlands Ave, New York, NY 11234
Who's behind the building

5221 Flatlands 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
Lin Flats Realty LLC
Address
117 9Th Street
Brooklyn, NY 11215
Landlord portfolio

Other properties owned.

Portfolio data hidden

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What residents say

Reviews from 5221 Flatlands 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

5221 Flatlands Avenue event timeline

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

2026
HPD Violation May 08
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 Feb 11
Class B violation

See all 18 events

Full history back to 2006 — violations, complaints, permits, bedbug filings, and more.

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Every record we have

Full data for 5221 Flatlands Avenue apartments

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

Side by side

How 5221 Flatlands Avenue compares to the neighborhood

This building against comparable properties in Flatlands. 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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