503 UNION AVENUE
503 UNION AVENUE is a Class D5 (elevator, large with stores) building in Brooklyn (BBL 3023150021) built in 1930, with 24 residential units across 5 floors.
The building is in NYC community district 301, council district 33, zoning district M1-2/R6, on a 10,387-square-foot lot with a building footprint of 36,888 square feet.
The current registered owner of record per NYC PLUTO is 505 UNION AVE LLC.
MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
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 17, 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 OfficerBERNARD JACOBOWITZ
- Corporate Owner505 UNION AVE LLC
- Managing AgentMENDY GREEN
Most recent deed
Recent ACRIS documents (last 5)
Building stats
- Zoning:
- M1-2/R6
- Lot size:
- 10,387 sqft
- Building area:
- 36,888 sqft
- Floors:
- 5
- Assessed value:
- $2.8M
- Community district:
- 301
- Council district:
- 33
HPD violations
Recent HPD violation details
- Class AInspected Dec 20, 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 Mar 2, 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 AInspected Apr 13, 2021(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 BInspected Sep 24, 2008§ 9, 170, 171, 300, 301, 302 M.D.LAW-FILE PLANS AND APPLICATION AND OBTAIN A CERTIFICATE OF OCCUPANCY TO LEGALIZE THE CONVERSION FROM A PRIV…
Recent ACRIS activity
Frequently asked questions about 503 UNION AVENUE
Who owns 503 UNION AVENUE?
The current registered owner of record for 503 UNION AVENUE per NYC PLUTO is 505 UNION AVE LLC. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 503 UNION AVENUE last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 503 UNION AVENUE in the last 5 years of recorded NYC public-records data. NYC ACRIS coverage extends back to 1966; an absence in our 5-year window typically means either the BBL has not transacted recently, or the most recent recorded document is not a DEED type (such as a refinance rather than a sale).
How many HPD violations does 503 UNION AVENUE have?
No open HPD housing-maintenance code violations are on record for 503 UNION AVENUE as of May 17, 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 503 UNION AVENUE?
NYC Department of Finance assesses 503 UNION AVENUE at $2.80M 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 503 UNION AVENUE and what does that mean?
503 UNION AVENUE is NYC building class D5 — Elevator, large with stores. A large elevator apartment building with ground-floor commercial space. 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.