# 733 Knickerbocker Avenue, Brooklyn, NY

Public-record building report from Know Your Building (https://knowyourbuilding.nyc/building/3033920001/733-knickerbocker-avenue-brooklyn).
BBL 3033920001 · BIN 3078027 · Generated 2026-10-23

## Concern level: severe

- 3 open class-C HPD violations (immediately hazardous) — about 1 per 3 apartments
- 3 of those issued 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: on the DHCR 2024 registered building list.
No public data says which specific apartment is stabilized; tenants can request their rent history from NYS Homes and Community Renewal.

## The building

built 1905, 4 floors, 8 residential units.

## HPD housing-maintenance violations

7 open (class C immediately hazardous: 3, class B hazardous: 4, class A non-hazardous: 0); 22 on record.
3 open class-C violations were issued in the last 3 years.

## DOB building violations

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

## OATH/ECB violations and fines

0 active of 8 on record; 0 decided by default; $0 balance due.

## 311 housing complaints

7 in the last 12 months; 7 on record.
Most common: HEAT/HOT WATER (3), DOOR/WINDOW (1), FLOORING/STAIRS (1), PAINT/PLASTER (1), PLUMBING (1).

## Bedbugs

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

## Evictions

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

## Housing court (HPD litigation)

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

## Landlord

- CorporateOwner: G A G LLC
- Agent: G A G LLC
- HeadOfficer: YOCMANAN ALTBERG
- Officer: GUY ALTBERG
- Shareholder: GUY ALTBERG
- Shareholder: YOCHANAN ALTBERG
- SiteManager: JOHN ALBERT

## 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/3033920001/733-knickerbocker-avenue-brooklyn