503 Union Avenue
Class B
Class C
12 months to Aug 2026
rent-stabilized with
DHCR (most recent year)
units (PLUTO)
12 months through March 2026
rent
min walk
(311 complaints)
errands grade
nearby
Top insights
- Built before 1939 (city records: 1930) — likely subject to NYC lead-paint rules
- Rent-stabilized: 7 of 23 units
About this building
The building’s floor space is 3.6 times the size of its lot: 36,888 sq ft of building on a 10,387 sq ft lot.
Comparisons with neighboring buildings, as of October 31, 2026.
A difference between the DHCR rent-stabilized count and the PLUTO total is common and does not, on its own, indicate a violation: units can leave rent stabilization legally, the two datasets count units differently, some units may be non-residential, and a registration can be filed incompletely. To check your own apartment, see how to request your rent history from DHCR.
503 Union Avenue
Open in Google Street View ↗
- City records show 1 open HPD violation at this building. Ask which are still unresolved in the unit and the landlord’s timeline to clear them.
- The oldest open violation on record dates to 2009 — why has it stayed open this long, and is it in or near this unit?
- DHCR’s most recent registration lists 7 rent-stabilized units here. Ask whether this specific unit is one of them, and ask the landlord for its legal regulated rent and lease history.
- Confirm the condition behind the most recent open violation was actually repaired, not just marked closed: M.d.law-file plans and application and obtain a certificate of occupancy to legalize….
503 Union Avenue sits in Brooklyn, ZIP 11211. The closest subway is Metropolitan Av/Lorimer St (G,L) (4-minute walk), served by the G and L lines.
Building Condition
Issued September 2009. HPD marks a violation open until it is certified as corrected, so an old date can mean an unresolved condition or a repair that was never certified.
- 2008-09-24
- Class B · 1 open · penalty 5 · (5/ea)
- 2025-12-17 · Apt BLDG · EMERGENCY · HEAT/HOT WATER
- 2022-06-01 "FAILURE TO FILE BENCHMARKING REPORT OF ENERGY USE AS PER AD. CODE SEC. 28-309.4"
- 2019-05-02 "FAILURE TO FILE BENCHMARKING REPORT OF ENERGY USE AS PER AD. CODE SEC. 28-309.4"
- 2018-03-14
No HPD lead-paint violations are on record for this building. That means no complaint or inspection was filed — not that the building is lead-free.
Built 1930. Under NYC Local Law 1 (Admin Code §27-2056.5), lead paint is presumed present in common areas and in apartments where a child under 6 resides, in multiple dwellings built before 1960. The presumption stands unless the owner obtained a lead-free or lead-safe exemption from HPD. Those exemption records aren’t published as open data, so we can’t confirm one either way.
The Building
Neighborhood & Environment
~1 block 300m
~2-3 blocks
- GRAND LARCENY: 48
- PETIT LARCENY: 42
- ASSAULT 3 & RELATED OFFENSES: 26
- HARRASSMENT 2: 23
- CRIMINAL MISCHIEF & RELATED OF: 20
- Noise - Commercial: 117
- Noise - Residential: 66
- Illegal Parking: 61
- Graffiti: 52
- Blocked Driveway: 39
- 275 N 8TH ST
- 484 UNION AVENUE
- 45 HAVEMEYER STREET
- P.S. 017 Henry D. Woodworth
- P.S. 132 The Conselyea School
- Citizens of the World Charter School 1 Williamsbur
- Conselyea Preparatory School
- John Ericsson Middle School 126
- J.H.S. 050 John D. Wells
- Brooklyn Preparatory High School
- Williamsburg High School for Architecture and Desi
- Williamsburg Preparatory School
- Metropolitan Av/Lorimer St
- Bedford Av
- Graham Av
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Artshack Brooklyn, Inc.
- Friends Of City Reliquary Incorporated
- Williamsburg High School For Architecture And Design
- Ericsson Playground
- Badame Sessa Triangle
- Frost Street Plaza
Internet providers serving this area
Internet providers available in this area — including fiber:
- Verizon Fiber Up to 2,300 Mbps down · 2,300 Mbps up
- Spectrum Cable Fiber Up to 1,000 Mbps down · 1,000 Mbps up
- Optimum Cable Up to 940 Mbps down · 35 Mbps up
How to check internet providers before signing an NYC lease →
Source: FCC Broadband Data Collection (NY, rev. May 2026). Wired broadband only — cable + fiber. DSL, satellite, and fixed-wireless not included. Block-level data; actual availability may vary by building.
Market & Availability
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