643 JEFFERSON AVENUE
643 JEFFERSON AVENUE is a Class C3 (walk-up, pre-1929) building in Brooklyn (BBL 3016510077) built in 1910, with 4 residential units across 3 floors.
The building is in NYC community district 303, council district 36, zoning district R6B, on a 2,000-square-foot lot with a building footprint of 3,600 square feet.
The current registered owner of record per NYC PLUTO is SCHAMBERG AS TRUSTEE, JAY.
The most recent ACRIS deed transfer for this BBL was recorded on April 5, 2022 when SCHAMBERG, JAY; SCHAMBERG, ANNE conveyed the property to SCHAMBERG ''AS TRUSTEE'', JAY; SCHAMBERG ''AS TRUSTEE'', ANNE; JAY AND ANNE SCHAMBERG REVOCABLE TRUST for a non-disclosed consideration. 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
- Managing AgentHANS YOO
Most recent deed
Recent ACRIS documents (last 5)
Building stats
- Zoning:
- R6B
- Lot size:
- 2,000 sqft
- Building area:
- 3,600 sqft
- Floors:
- 3
- Assessed value:
- $399K
- Community district:
- 303
- Council district:
- 36
HPD violations
Recent HPD violation details
- Class AInspected Apr 10, 2024(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 AInspected Mar 23, 2023(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 AInspected Feb 25, 2022(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 IInspected Feb 25, 2022§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE…
- Class IInspected Oct 30, 2019§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE…
Recent ACRIS activity
Frequently asked questions about 643 JEFFERSON AVENUE
Who owns 643 JEFFERSON AVENUE?
The current registered owner of record for 643 JEFFERSON AVENUE per NYC PLUTO is SCHAMBERG AS TRUSTEE, JAY. The most recent ACRIS deed transfer for this BBL was recorded on April 5, 2022 when the property was conveyed to SCHAMBERG ''AS TRUSTEE'', JAY; SCHAMBERG ''AS TRUSTEE'', ANNE; JAY AND ANNE SCHAMBERG REVOCABLE TRUST. 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 643 JEFFERSON AVENUE last sold?
The most recent ACRIS deed transfer for 643 JEFFERSON AVENUE was recorded on April 5, 2022, when SCHAMBERG, JAY; SCHAMBERG, ANNE conveyed the property to SCHAMBERG ''AS TRUSTEE'', JAY; SCHAMBERG ''AS TRUSTEE'', ANNE; JAY AND ANNE SCHAMBERG REVOCABLE TRUST for a non-disclosed consideration. The transaction was recorded as cash (no paired mortgage instrument).
How many HPD violations does 643 JEFFERSON AVENUE have?
No open HPD housing-maintenance code violations are on record for 643 JEFFERSON AVENUE 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 643 JEFFERSON AVENUE?
NYC Department of Finance assesses 643 JEFFERSON AVENUE at $399K 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 643 JEFFERSON AVENUE and what does that mean?
643 JEFFERSON AVENUE is NYC building class C3 — Walk-up, pre-1929. A walk-up apartment building constructed before 1929, typically 3-6 stories and often rent-stabilized. 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.