# 725 4 Avenue, Brooklyn, NY

Public-record building report from Know Your Building (https://knowyourbuilding.nyc/building/3006490001/725-4-avenue-brooklyn).
BBL 3006490001 · BIN 3009537 · Generated 2026-10-23

## Concern level: high

- 9 open class-C HPD violations (immediately hazardous) — about 1 per 18 apartments
- 8 open rent-impairing violation(s)
- 7 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 103 stabilized units for 2023, of about 164 apartments.
Registered units by year: 2018: 105, 2019: 105, 2020: 103, 2021: 103, 2022: 102, 2023: 103.
No public data says which specific apartment is stabilized; tenants can request their rent history from NYS Homes and Community Renewal.

## The building

built 1928, 6 floors, 164 residential units.

## HPD housing-maintenance violations

53 open (class C immediately hazardous: 9, class B hazardous: 33, class A non-hazardous: 11); 393 on record.
8 open violations are rent-impairing.

## DOB building violations

7 active (1 issued in the last 3 years); 29 on record.

## OATH/ECB violations and fines

0 active of 31 on record; 0 decided by default; $0 balance due.

## 311 housing complaints

29 in the last 12 months; 143 on record.
Most common: HEAT/HOT WATER (73), UNSANITARY CONDITION (23), PLUMBING (11), ELECTRIC (9), DOOR/WINDOW (7).

## Bedbugs

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

## Evictions

1 executed in the last 3 years; 5 on record.

## Housing court (HPD litigation)

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

## City debt and tax-lien sale

On a tax-lien sale list in 2025 (60-day notice), water/sewer debt only.

## Landlord

- Agent: ISAAC KURTZ
- HeadOfficer: SAMUEL KURTZ
- CorporateOwner: 725 4TH OWNER LLC
- SiteManager: LUIS Martinez

## 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/3006490001/725-4-avenue-brooklyn