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Free Building Background Check

186 Knickerbocker Avenue

BROOKLYN, NY 11237 BBL 3031650032 5 units · 3 floors · 1931

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HPD violations vs. neighborhood
Class B/C violations on record vs. a typical building in Bushwick
? vs. avg
Fewer violations More violations

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Rent & eviction protection

Is 186 Knickerbocker 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 1931
6 or more units
5 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

186 Knickerbocker Avenue is a 3-story, 4-unit Old Law Tenement building located in Bushwick, built in 1931 and currently owned by Fang Ying Gao. The building has experienced several significant maintenance issues over the past few years, with the most pressing concerns centering around sanitation and safety. As of September 2023, there are open violations related to garbage accumulation in the compactor closet and front areas, a broken entrance door lock, and multiple issues in apartment 3L including pest infestations (both roaches and mice), a missing smoke detector, and a defective kitchen window sash. The building has also had recurring electrical issues, with a recent power outage in August 2023 and a history of electrical complaints dating back to 2021.

Notable safety and sanitary concerns have persisted throughout 2023, including violations related to smoke detectors, carbon monoxide detectors, mold, and various plumbing and flooring issues. Despite these challenges, recent rodent inspections in 2025 have shown compliance with passing results, suggesting some improvement in pest management. The building has demonstrated regular responses to pest control needs, with multiple bait applications recorded in early 2023. Of particular note is the building's bedbug reporting history, with filings in 2021 and 2024 showing no infested units or eradication efforts required during those periods. While many complaints have been inspected and closed by the Department of Housing Preservation and Development (HPD) throughout 2023, the presence of multiple open violations as of September 2023 suggests ongoing maintenance challenges.

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How we score buildings

How 186 Knickerbocker 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
28th percentile

Out of 5008 buildings in this neighborhood, 1402 have a higher predicted risk.

RiskiestSafest
Predicted violation outcome
23.3%
No serious
violations
63.0%
Some violations
(1–9)
13.7%
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.

Tenant HPD complaints (past 7 years)

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

Complaint rate, landlord's portfolio

Average complaint rate per building across everything this landlord owns. High rates signal systemic neglect.

311 housing calls (past 7 years)

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

Building characteristics
Total units5
Floors3
Year built1931
Gross area2,750 sq ft
Building class
Tax abatementNone
Issue trend & model projection

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

Who's behind the building

186 Knickerbocker 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
Quan Yuan Property Corp
Address
186 Knickerbocker ave
Brooklyn, NY 11237
Landlord portfolio

Other properties owned.

Portfolio data hidden

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What residents say

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