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NYC Building Records · BBL 3011410043

634 CLASSON AVENUE

Brooklyn · Block 1141 · Lot 43 · Class S9

Owner of record

HP MJM HOUSING DEVELOPMENT FUND COMPANY, INC.,
HPD-registered head officer: MATTHEW KELLER

HPD registered contacts

People legally accountable to HPD for conditions at this building, in registration-priority order:
  • Head OfficerMATTHEW KELLER
  • Corporate OwnerPROSPECT AFFORDABLE PACKAGE LLC
  • Managing AgentNIEUW AMSTERDAM PROPERTY MANAGEMENT
  • Site ManagerGABE STONE

Most recent deed

Last transferred on Jun 24, 2021 for $22.1M to HP MJM HOUSING DEVELOPMENT FUND COMPANY, INC.,; PROSPECT AFFORDABLE PACKAGE LLC.
Previous owner: 634 CLASSON LLC; 663 CLASSON LLC; 667 CLASSON LLC; 643 FRANKLIN LLC; 483 ST MARKS LLC; 489 ST MARKS LLC; 515 ST MARKS LLC; 649-651 CLASSON LLC; 1020 PACIFIC LLC; 1063 PACIFIC LLC; 592 FRANKLIN LLC; 808 BERGEN LLC; 818 BERGEN LLC; 872 BERGEN LLC
Mortgage: $17.7M recorded Jun 24, 2021 with Rockrose Llc. Loan-to-value: 80%.
🔒 See full deed history for this building →

Recent ACRIS documents (last 5)

DateTypeAmountParties
Oct 25, 2021AGMT$21.0MParties redacted — full names in MetroDeeds Scout+
Oct 25, 2021MTGE$3.3MParties redacted — full names in MetroDeeds Scout+
Jun 24, 2021AGMT$17.7MParties redacted — full names in MetroDeeds Scout+
Jun 24, 2021MTGE$799KParties redacted — full names in MetroDeeds Scout+
Jun 24, 2021DEED$22.1MParties redacted — full names in MetroDeeds Scout+
🔒 Unlock party names + multi-decade history →

Building stats

Units
8
Year built
1931
Class
S9
Borough
Brooklyn
Zoning:
R6A
Lot size:
2,450 sqft
Building area:
6,250 sqft
Floors:
4
Assessed value:
$1.1M
Community district:
308
Council district:
35

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 Oct 30, 2025
    § 53, 187, 231 M/D LAW AND DEPARTMENT RULES AND REGULATIONS. PROVIDE A SHOE PROPERLY SECURED TO BOTTOM OF STRING OF DROPLADDER SHOE AT NORTH…
  • Class AInspected Apr 15, 2022
    § 27-2011 ADM CODE CLEANSE TO THE SATISFACTION OF THIS DEPARTMENT THE CERAMIC TILES SURFACE WITH GROUTED JOINTS OF VISIBLE MOLD AT SOUTH WAL…
  • Class AInspected Apr 15, 2022
    § 27-2005 ADM CODE PROPERLY REPAIR THE BROKEN OR DEFECTIVE INOPERATIVE INTERCOM SYSTEM FROM BUILDING FRONT ENTRANCE TO PANEL AT NORTH WALL I…
  • Class BInspected Apr 15, 2022
    § 27-2005 ADM CODE PROPERLY REPAIR THE BROKEN OR DEFECTIVE INOPERATIVE LIGHT FIXTURE AT CEILING AT PUBLIC HALL, 2nd STORY
  • Class BInspected Apr 15, 2022
    § 27-2046.1 HMC: REPAIR OR REPLACE THE CARBON MONOXIDE DETECTING DEVICE(S). MISSING IN THE ENTIRE APARTMENT LOCATED AT APT 2B, 2nd STORY, 1s…
🔒 See full violation history with closure dates →

Recent ACRIS activity

5 documents in the last 5 years (most recent Oct 25, 2021).

More from MetroDeeds

Go deeper on this building

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Every deed, every violation, court cases, mortgages, and operator portfolio — in one panel.
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