414 51 Street

Brooklyn, NY

BBL 3-00799-0011BIN 3013538

Concern level2 of 4

Moderate

011 open class-C HPD violation (immediately hazardous) — about 1 per 9 apartments
021 of those issued in the last 3 years
034 active DOB violation(s)

How this is set: open hazardous violations measured against the building's size, then raised by strong distress signals — HPD's enforcement program, court harassment findings, recent evictions, unpaid DOB fines, open housing-court cases, and a sold tax lien. Neighborhood noise and crime are not part of it. It describes the public record, not the condition of any one apartment, and a quiet record is not proof of a good building.

Rent regulation

Likely rent-stabilized

The owner registered 17 stabilized units with New York State for 2021 — essentially all of the building's 9 apartments.

No public data says which specific apartment is stabilized.

Registration counts apply to the building, not to unit numbers. To confirm your own apartment, request your rent history from New York State Homes and Community Renewal — it is free and takes a few weeks.

How to request your rent history →

Rent regulation

The building

1905

Built

Floors

Residential units

Walk-up apartments

Type

The building

This building and the landlord's others

This building

HPD housing-maintenance violations

Open now

On record

Open Class C

Open Class B

Open Class A

Class C is immediately hazardous, Class B is hazardous, Class A is non-hazardous. A violation stays open until HPD certifies the repair, so some open items may already be fixed.

CLASS I · NON-HAZARDOUS

§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE SUBJECT TO CIVIL PENALTIES, PROHIBITED FROM CERTIFYING VIOLATIONS, AND DENIED THE RIGHT TO RECOVER POSSESSION OF PREMISES FOR NONPAYMENT OF RENT UNTIL A VALID REGISTRATION STATEMENT IS FILED.

Status: Notice issued, not yet certified

CLASS C · IMMEDIATELY HAZARDOUSApt 202BIssued 2026-10-05

§ 27-2037, 2038 HMC: PROVIDE A SAFE AND ADEQUATE SUPPLY OF ELECTRIC SERVICE TO THE FIXTURES AT CEILING AND ALL WALLS IN THE ENTIRE APARTMENT LOCATED AT APT 202B, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST

Status: Notice issued, not yet certified

CLASS B · HAZARDOUSApt 305Issued 2009-01-135+ YRS OLD

§ 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. LOCATED AT B-ROOM 305, 2nd STORY, 2nd B-ROOM FROM WEST AT NORTH

Status: Landlord hasn't certified a fix

CLASS B · HAZARDOUSApt 305Issued 2008-12-295+ YRS OLD

§ 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. IN THE ROOM LOCATED AT B-ROOM 305, 2nd STORY, 1st B-ROOM FROM WEST AT NORTH

Status: Notice issued, not yet certified

HPD housing-maintenance violations

311 complaints from tenants

All time

Last 12 months

Electric3

ElectricNo Lighting2026-10-07 · closed

ElectricPower Outage2026-10-02 · closed

ElectricPower Outage2026-10-01 · closed

Complaints record what a tenant reported, not a finding by the city. "Closed" often means the inspector could not gain access.

311 complaints from tenants

Neighborhood noise

Higher than averagevs. NYC apartment blocks

601

Noise reports · last 12 mo

≈ per month

% from neighbors

Residential350

Street/Sidewalk145

Unspecified55

Commercial28

Vehicle21

House of Worship1

Helicopter1

311 noise complaints within about 1,000 ft (a few blocks) in the last year. Most reports here are about noise from inside buildings — neighbors, not the street. This counts how often people call 311, which tracks how densely populated and busy an area is as much as how loud it is — it is not a sound measurement.

Neighborhood noise

Neighborhood crime

Higher than averagevs. NYC apartment blocks

322

NYPD reports · last 12 mo

≈ per month

Felony109

Misdemeanor182

Violation31

NYPD complaints reported within about 1,000 ft (a few blocks) in the last year, by severity. This reflects what gets reported and where police are active as much as actual safety, and busier, denser, higher-foot-traffic blocks log more. Locations are approximate — the NYPD shifts each report to the nearest corner for privacy — so read this as rough context, not a safety score.

Neighborhood crime

Bedbug history

No bedbugs reported

The owner filed 5 annual bedbug reports and reported no infested units. Filing with zero infestations is the compliant, reassuring case.

Bedbug history

DOB building violations

Active

On record

Active, last 3 yrs

ACTIVE · C-CONSTRUCTION OTHER OPTIONAL2009-01-06

COMPLY WITH ORDER TO VACATE CELLAR APARTMENT

ACTIVE · C-CONSTRUCTION OTHER OPTIONAL2008-12-15

WORK W/OUT PERMIT

ACTIVE · C-CONSTRUCTION OTHER OPTIONAL2008-12-15

WORK W/OUT PERMIT

DOB building violations

Evictions

No executed evictions on record for this building.

Evictions

Housing court

No HPD housing-court cases on record for this building.

Housing court

Landlord and related buildings

Managing agent

GARY KONG

No other buildings found sharing this building's registered contact.

Landlord and related buildings

Unpaid city fines

Balance due (active)

Active violations

Lost by default

DOB violations adjudicated by OATH carry money penalties. "Lost by default" means the owner never appeared at the hearing. An unpaid balance is a stronger "ignoring the city" signal than a raw violation count.

UnknownClass 22009-11-18$800 penalty

ConstructionClass 12008-12-15$1,600 penalty

ConstructionClass 12008-12-15$2,400 penalty

Unpaid city fines

Ownership & money

Recorded sales

Mortgages / refinances

Last recorded sale2002-10-18 · no recorded price

Most recent mortgage2000-04-26 · $120,000

Sale2002-10-18no recorded price

ZHEN, LONG GUI, LAU, HIN PING, GUI,ZHEN LONG → KONG, YAN YANG, CHENG, SUK YUE, KONG, GARY

Mortgage2000-04-26$120,000

borrower LAU, HIN PING, GUI, ZHEN LONG · lender EQUICREDIT

Sale2000-03-10no recorded price

GUI, ZHEN LONG → LAU, HIN PING, GHI, ZHEN LONG

Sale1999-10-13no recorded price

GUI, ZHEN LONG → LAU, HIN PING, GUI, ZHEN LONG

Mortgage1999-04-29$30,000

borrower GUI, ZHEN LONG · lender MALPICA, MARIA

From ACRIS recorded documents. Amounts are often $0 or nominal for transfers between related parties, and LLCs can obscure who is really involved — treat this as public-record context, not a valuation.

Ownership & money

City debt & tax-lien sale

Not on the city's tax-lien sale list (2019–2025). The owner has not fallen far enough behind on property tax or water charges to be flagged for a lien sale.

City debt & tax-lien sale