170 East 51 Street

Brooklyn, NY

BBL 3-04620-0013BIN 3100190

Concern level4 of 4

Severe

017 open class-C HPD violations (immediately hazardous) across 6 apartments
022 of those issued in the last 3 years
031 open rent-impairing violation(s)
047 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 6 stabilized units with New York State for 2018 — essentially all of the building's 6 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

1930

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 C · IMMEDIATELY HAZARDOUSApt 1CIssued 2025-09-08

§ 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES AT DOOR IN THE ENTRANCE LOCATED AT APT 1C, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST

Status: HPD couldn't get in to re-inspect

CLASS C · IMMEDIATELY HAZARDOUSApt 1CIssued 2025-08-18

Status: Awaiting HPD re-inspection

CLASS C · IMMEDIATELY HAZARDOUSApt 2AIssued 2020-07-245+ YRS OLD

HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 2A, 1st STORY, APARTMENT AT WEST

Status: Defect letter issued

CLASS C · IMMEDIATELY HAZARDOUSApt 2AIssued 2020-07-245+ YRS OLD

HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 2A, 1st STORY, APARTMENT AT WEST

Status: Defect letter issued

HPD housing-maintenance violations

311 complaints from tenants

All time

Last 12 months

Plumbing7

Heat/Hot Water5

Water Leak3

Electric1

General1

Water LeakSlow Leak2026-10-12 · open

Water LeakHeavy Flow2026-09-26 · 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

About averagevs. NYC apartment blocks

312

Noise reports · last 12 mo

≈ per month

% from neighbors

Street/Sidewalk127

Residential123

Commercial36

Unspecified10

Vehicle10

House of Worship6

311 noise complaints within about 1,000 ft (a few blocks) in the last year. Most reports here are about outdoor noise (mostly street/sidewalk) — street life and traffic more than neighbors. 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

282

NYPD reports · last 12 mo

≈ per month

Felony78

Misdemeanor124

Violation80

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 1 annual bedbug report 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 · LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED2023-06-20

VIOLATION ISSUED-FAILURE TO FILE 2018 EXTERNAL LOW PRESSURE INSPECTION

ACTIVE · LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED2017-02-24

VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2015 INSPECTION REPORT

ACTIVE · LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED2015-10-01

VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2014 INSPECTION REPORT

DOB building violations

Evictions

No executed evictions on record for this building.

Evictions

Housing court

Cases on record

Open now

Tenant-brought

Harassment found

With a judgment

Most cases are tenants taking the owner to court to force repairs. A case is not proof of wrongdoing; a harassment finding or judgment is a court ruling against the owner.

CLOSEDOpened 2025-08-27

Tenant action

CLOSEDOpened 2024-12-17

Tenant action

CLOSEDOpened 2019-01-02

Heat / hot water

CLOSEDOpened 2018-05-02

Heat / hot water

Housing court

Landlord and related buildings

Registered owner

BKJA ESTATE LLC

Head officer

CLIVE CHANG

Managing agent

BKJA ESTATE LLC

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.

Unpaid city fines

Ownership & money

Recorded sales

Mortgages / refinances

Last recorded sale2020-09-02 · no recorded price

Most recent mortgage2020-09-02 · $605,000

Sale2020-09-02no recorded price

CHANG, CLIVE → BKJA ESTATE LLC

Mortgage2020-09-02$605,000

borrower BKJA ESTATE LLC · lender RIDEWOOD SAVINGS BANK

Sale2019-12-10no recorded price

CHANG, CLIVE, CHANG, JOHN → CHANG, CLIVE

Sale2014-07-08no recorded price

MENDIS, THAMAR → CHANG, JOHN, CHANG, CLIVE

Mortgage2010-08-31$97,723.46

borrower MENDIS, THAMAR · lender EMIGRANT FUNDING CORPORATION

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