634 HUMBOLDT STREET
634 HUMBOLDT STREET is a Class C2 (walk-up, five to six) building in Brooklyn (BBL 3026860057) built in 1931, with 6 residential units across 3 floors.
The building is in NYC community district 301, council district 33, zoning district R6B, on a 2,375-square-foot lot with a building footprint of 3,206 square feet.
The current registered owner of record per NYC PLUTO is 634 HUMBOLDT STR, LLC.
The most recent ACRIS deed transfer for this BBL was recorded on October 23, 2024 when RICHARD BABIJ, TRUSTEE; THE ALBIN BABIJ TRUST conveyed the property to 634 HUMBOLDT STR, LLC for $1.41M. The transaction was recorded as cash (no paired mortgage instrument).
The building is registered with NYC HPD's landlord-registration system and has no open HPD housing-maintenance code violations on record as of May 18, 2026.
Data sourced daily from NYC PLUTO (Department of City Planning), NYC ACRIS (Department of Finance), and NYC HPD housing-maintenance code violations.
Owner of record
HPD registered contacts
- Head OfficerKRZYSZTOF ROSTEK
- Corporate Owner634 Humboldt Str, LLC
- Site ManagerMARIUSZ JANIEC
Most recent deed
Recent ACRIS documents (last 3)
Building stats
- Zoning:
- R6B
- Lot size:
- 2,375 sqft
- Building area:
- 3,206 sqft
- Floors:
- 3
- Assessed value:
- $671K
- Community district:
- 301
- Council district:
- 33
HPD violations
Recent HPD violation details
- Class CInspected Jan 27, 2026§ 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF SCALDING HOT WATER ABOVE 130 DEGREES IN THE ENTIRE APARTMENT LOCATED AT AP…
- Class AInspected Feb 28, 2025§ 329, M/D LAW AND DEPT. RULES AND REGS. PROVIDE A COMPLETED CERTIFICATE OF INSPECTION VISITS IN A PROPER FRAME AT OR NEAR MAILBOXES, BOTTOM…
- Class AInspected Feb 28, 2025§ 27-2045 ADM CODE POST A PROPER NOTICE OF SMOKE DETECTOR REQUIREMENTS, IN A FORM APPROVED BY THE COMMISSIONER, AT OR NEAR THE MAIL BOX MISS…
- Class AInspected Feb 28, 2025§ 27-2046.1 HMC: POST A PROPER NOTICE OF CARBON MONOXIDE DETECTING DEVICE REQUIREMENTS, IN A FORM APPROVED BY THE COMMISSIONER, IN A COMMON…
- Class AInspected Feb 28, 2025§ 27-2104 ADM CODE POST AND MAINTAIN A PROPER SIGN ON WALL OF ENTRANCE STORY SHOWING THE REGISTRATION NUMBER ASSIGNED BY THE DEPARTMENT AND…
Recent ACRIS activity
Frequently asked questions about 634 HUMBOLDT STREET
Who owns 634 HUMBOLDT STREET?
The current registered owner of record for 634 HUMBOLDT STREET per NYC PLUTO is 634 HUMBOLDT STR, LLC. The most recent ACRIS deed transfer for this BBL was recorded on October 23, 2024 when the property was conveyed to 634 HUMBOLDT STR, LLC. PLUTO ownership is refreshed monthly by NYC Department of Finance; the registered owner may not reflect transactions recorded within the last 30 days.
When was 634 HUMBOLDT STREET last sold?
The most recent ACRIS deed transfer for 634 HUMBOLDT STREET was recorded on October 23, 2024, when RICHARD BABIJ, TRUSTEE; THE ALBIN BABIJ TRUST conveyed the property to 634 HUMBOLDT STR, LLC for $1.41M. The transaction was recorded as cash (no paired mortgage instrument).
How many HPD violations does 634 HUMBOLDT STREET have?
No open HPD housing-maintenance code violations are on record for 634 HUMBOLDT STREET as of May 18, 2026. The building is registered with NYC HPD's landlord-registration system. HPD violation data is pulled daily from the NYC Open Data violations feed.
What is the assessed value of 634 HUMBOLDT STREET?
NYC Department of Finance assesses 634 HUMBOLDT STREET at $671K for the current tax year. NYC assesses property at a fraction of estimated market value (the assessment ratio varies by tax class — 6% for tax class 1 one-to-three-family dwellings, approximately 45% for tax class 2 rental apartment buildings), so the market value implied by this assessment is meaningfully higher. Assessment data is published by NYC Department of Finance.
What building class is 634 HUMBOLDT STREET and what does that mean?
634 HUMBOLDT STREET is NYC building class C2 — Walk-up, five to six. A 3-to-6-story walk-up apartment building, 5-6 residential units. Building class is assigned by NYC Department of Finance and recorded in PLUTO; it determines the property's tax class and the regulatory regime that applies.