# 401 St Marks Avenue, Brooklyn, NY

Public-record building report from Know Your Building (https://knowyourbuilding.nyc/building/3011480080/401-st-marks-avenue-brooklyn).
BBL 3011480080 · BIN 3396276 · Generated 2026-10-23

## Concern level: severe

- 86 open class-C HPD violations (immediately hazardous) across 24 apartments
- 42 of those issued in the last 3 years
- 39 open rent-impairing violation(s)

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 24 stabilized units for 2023, of about 24 apartments.
Registered units by year: 2018: 24, 2019: 24, 2020: 24, 2021: 24, 2022: 24, 2023: 24.
No public data says which specific apartment is stabilized; tenants can request their rent history from NYS Homes and Community Renewal.

## The building

built 2000, 3 floors, 24 residential units.

## HPD housing-maintenance violations

60 open (class C immediately hazardous: 10, class B hazardous: 40, class A non-hazardous: 10); 98 on record.
6 open class-C violations were issued in the last 3 years.
This tax lot has 8 buildings; these counts are for this building only.

## DOB building violations

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

## 311 housing complaints

61 in the last 12 months; 277 on record.
Most common: HEAT/HOT WATER (51), PLUMBING (51), UNSANITARY CONDITION (42), PAINT/PLASTER (37), WATER LEAK (36).

## Bedbugs

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

## Evictions

0 executed in the last 3 years; 4 on record.

## Housing court (HPD litigation)

13 cases on record, 0 open, 9 tenant-initiated, 0 with a court finding of harassment.

## City debt and tax-lien sale

On a tax-lien sale list in 2025 (30-day notice).

## Landlord

- CorporateOwner: KNOX HOMES L.P
- Agent: NEW START GROUP, INC
- HeadOfficer: ALFRED THOMPSON
- Officer: LAQUASIA THOMAS
- SiteManager: LAQUASIA THOMAS

The same owner is linked to 4 other buildings (ALFRED THOMPSON at 575 GRAND AVENUE).

## 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/3011480080/401-st-marks-avenue-brooklyn