# 55 St Marks Avenue, Brooklyn, NY

Public-record building report from Know Your Building (https://knowyourbuilding.nyc/building/3009330050/55-st-marks-avenue-brooklyn).
BBL 3009330050 · BIN 3018616 · Generated 2026-10-24

## Concern level: high

- 2 open class-C HPD violations (immediately hazardous) — about 1 per 5 apartments
- 4 active DOB violation(s)
- 1 eviction executed in the last 3 years

Scale: low, moderate, high, severe. Set from open hazardous violations relative to building size, raised by distress signals (HPD's Alternative Enforcement Program, court harassment findings, evictions, unpaid OATH/ECB fines, open housing-court cases, a sold tax lien). It describes the public record, not any one apartment.

## Rent stabilization

Likely rent-stabilized. The owner registered 4 stabilized units for 2023, of about 9 apartments.
Registered units by year: 2018: 4, 2019: 4, 2020: 4, 2021: 4, 2022: 4, 2023: 4.
No public data says which specific apartment is stabilized; tenants can request their rent history from NYS Homes and Community Renewal.

## The building

built 1880, 3 floors, 9 residential units.

## HPD housing-maintenance violations

11 open (class C immediately hazardous: 2, class B hazardous: 4, class A non-hazardous: 5); 21 on record.

## DOB building violations

4 active (0 issued in the last 3 years); 4 on record.

## 311 housing complaints

0 in the last 12 months; 1 on record.
Most common: DOOR/WINDOW (1).

## Bedbugs

7 annual bedbug filings by the owner; latest reports 0 infested units.

## Evictions

1 executed in the last 3 years; 1 on record.

## Housing court (HPD litigation)

1 cases on record, 0 open, 0 tenant-initiated, 0 with a court finding of harassment.

## Landlord

- CorporateOwner: 55 SAINT MARKS AVENUE LLC
- Agent: BBI REALTY LLC
- SiteManager: WILLIAM SANTIAGO
- Shareholder: HANK HSU
- Officer: JUDY HSU
- Shareholder: JUDY HSU
- HeadOfficer: HANK HSU

The same owner is linked to 1 other building (HANK HSU at 10 LINCOLN PLACE).

## Sources and limits

NYC Open Data (HPD, DOB, OATH/ECB, 311, DOF, PLUTO) and NYS DHCR building lists. This is a screening signal from public records, not legal advice; records lag and contain errors. Full interactive report with violation details and maps: https://knowyourbuilding.nyc/building/3009330050/55-st-marks-avenue-brooklyn