NYC Building Records · BBL 3056040006
4307 12 AVENUE
Brooklyn · Block 5604 · Lot 6 · Walk-up apartment (Class C1)
Owner of record
MAZEL 12 AV LLC
HPD-registered head officer: ARON GUMBU
HPD registered contacts
People legally accountable to HPD for conditions at this building, in registration-priority order:
- Head OfficerARON GUMBU
- Corporate OwnerMAZEL 12AV LLC
- Site ManagerReuven Gumbu
Most recent deed
Last transferred on Apr 16, 2013 for $2.3M to Mazel 12 Av Llc.
Previous owner: 12th Avenue Homes Corp.
Cash sale: no recorded mortgage tied to this transfer.
🔒 See full deed history for this building →Recent ACRIS documents (last 2)
DateTypeAmountParties
Apr 16, 2013DEED$2.3MParties redacted — full names in MetroDeeds Scout+
Apr 18, 2005DEEDO$1.9MParties redacted — full names in MetroDeeds Scout+
🔒 Unlock party names + multi-decade history →Building stats
Units
16
Year built
1916
Class
C1
Borough
Brooklyn
- Zoning:
- R6
- Lot size:
- 4,000 sqft
- Building area:
- 14,240 sqft
- Floors:
- 4
- Assessed value:
- $522K
- Community district:
- 312
- Council district:
- 44
HPD violations
0 open
Most severe class on record: Class C (immediately hazardous)
No open violations on record. Source: NYC HPD.
🔒 See full violation history →Recent HPD violation details
Most recent 5 violations issued by NYC HPD at this address:
- Class AInspected Apr 30, 2026(A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD…
- Class CInspected Apr 20, 2026§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD FLOOR IN THE 4th ROOM FROM NORTH AT EAST LOCATED AT AP…
- Class CInspected Apr 20, 2026§ 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF KEY OPERATED LOCK AT DOOR LEADING TO FIRE ESCAPE IN THE 4th ROOM FROM NORT…
- Class BInspected Apr 20, 2026§ 27-2045(B)(1)(B) HMC, § 12-06, § 12-07, § 12-09 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVI…
- Class CInspected Apr 20, 2026§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD FLOOR IN THE 3rd ROOM FROM NORTH LOCATED AT APT D4, 4t…
Recent ACRIS activity
2 documents in the last 5 years (most recent Apr 16, 2013).
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