503 UNION AVE, Brooklyn, NY 11211 — Property Records, Permits, Violations, Tax & Zoning | RegWatch

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Year Built1930

Floors5

Units24

Building Area36,888 sqft

ZoningM1-2/R6

ClassD5

Market Value$7.3M

503 UNION AVE is a property located at 503 UNION AVE, Brooklyn, NY 11211. It is classified as a elevator apartment - converted. The building was constructed in 1930. It has 5 floors and 24 units. The building area is 36,888 square feet on a 10,387 sqft lot. The property is zoned M1-2/R6. The assessed market value is $7.3M. Public records list the property as company-owned. There are 43 building permits on record (20 active). There are 42 violations on record (1 currently open). 14 docketed judgments carrying $550 in open balances are on record with OATH. Data sourced from NYC Department of Buildings (DOB), Housing Preservation & Development (HPD), Department of Finance (DOF), and other government agencies.

A RegWatch Dossier

216records on file

87Energy Star

Completed in 1930, 503 Union Ave rises 5 stories over Kings. Public records put it at 24 units and 36,888 square feet of floor area, on land zoned M1-2/R6. It is carried on the public rolls at a market value of $7.3M, and assessed for tax at $3.3M. In the 51 years its record reaches back, the lot has drawn 216 separate government filings.

The documentary life of the address leans hard toward enforcement: 44 of its 216 records, fully 20%, fall under that one heading. Permit (43) and violation (42) trail well behind. 1 violation stands open against it today.

The pace is anything but even. The early decades pass in near silence; the filings cluster heavily in recent years, peaking in 2017.

On the environmental ledger, the building posts an Energy Star score of 87, with a site energy-use intensity of 56.7 kBtu per square foot. Its operations answer for roughly 221 metric tons of CO2-equivalent a year.

Read together — 20% enforcement, 51 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$7.3M of Kings, written across 216 government filings.

Open the live report — daily-updated data, AI chat & alerts

Sources

NYC DOB NYC HPD NYC DOF ACRIS NYC DCP ECB/OATH NYC DEP NYC LPC NYC FDNY NYS DHCR MOCEJ FEMA EPA US Census HUD USGS

updated Aug 1, 2026

Property Details

Address503 UNION AVE, Brooklyn, NY 11211

Building TypeElevator Apartment - Converted

Building ClassD5

Year Built1930

Floors5

Total Units24

Building Area36,888 sqft

Lot Size10,387 sqft

ZoningM1-2/R6

ConditionAverage

BBL3023150021

BIN3061860 +2 more

OwnershipCompany-owned

Assessment & Sales

Market Value$7.3M

Assessed Total$3.3M

Assessed Land$421K

Building Permits

43 on record · 20 active

General ConstructionDOB NOW

LOC ISSUED

Filed Jun 20, 2023Est. cost $8KJob #B00463618-S1

View this permit's full record & inspection history →

ElectricalDOB NOW

CANCELLED

Filed Apr 3, 2022Job #B00711557-I1-EL

Run circuits for EV chargers from existing panel.

View this permit's full record & inspection history →

General ConstructionDOB NOW

LOC ISSUED

Filed Sep 15, 2021Est. cost $5KJob #B00463618-I1

View this permit's full record & inspection history →

General ConstructionDOB NOW

APPROVED

Filed Aug 10, 2021Est. cost $5KJob #B00463618-P2

View this permit's full record & inspection history →

PlumbingDOB NOW

SIGNED-OFF

Filed Jun 2, 2021Est. cost $5KJob #B00463618-I1

Renewal Permit Without Changes

View this permit's full record & inspection history →

+ 38 more permits — view full report

Violations

42 on record · 1 open

Open judgment balance — docketed OATH judgments$550

Judgments · 14 docketed

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Jan 31, 2026Balance $125Ticket #048789039H

ILLEGAL POSTING OF HANDBILL NOTICE

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Jan 31, 2026Balance $125Ticket #048789040P

ILLEGAL POSTING OF HANDBILL NOTICE

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Oct 31, 2024Ticket #048381449L

LOOSE RUBBISH 1ST OCCURRENCE

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Aug 31, 2024Ticket #048148100H

STORAGE OF RECEPTACLES PLACED OUT PRIOR TO 8PM WITHOUT A RECEPTACLE

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Jul 31, 2024Ticket #048116380P

STORAGE OF RECEPTACLES PLACED OUT PRIOR TO 8PM WITHOUT A RECEPTACLE

+ 9 more docketed judgments — view full report

DOB LegacyC

DISMISSED

Issued Jan 14, 2026#2818202

FTM BLDG IN A CODE COMPPLIANT MANNER-OBSVD @ EXP1 SEVERAL BRICK MASONRY CRACKS AT GROUND FLOOR AND NEAR MAIN ENTRANCE. OWNER TO IMMED RETAIN NYSPE TO EVAL THE ENITE BLDG AND PREPAR/FILE REPAIR DWGS REPAIR BLDG UNDER PERMIT. START WORK BY 02/14/26 COMPLETE/SIGN OFF BY 03/14/2026

View this violation's full details & status history →

HPDClass A

VIOLATION DISMISSED

Issued Dec 20, 2025#18519187

§ 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 EDGE OF FRAME BETWEEN 48-62 INCHES ABOVE FLOOR MISSING

View this violation's full details & status history →

DOB LegacyEnergy Benchmarking

DISMISSED

Issued Jun 1, 2022#2586601

FAILURE TO FILE BENCHMARKING REPORT OF ENERGY USE AS PER AD. CODE SEC. 28-309.4

View this violation's full details & status history →

HPDClass A

VIOLATION DISMISSED

Issued Mar 2, 2022#14960544

(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 HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.

View this violation's full details & status history →

HPDClass A

VIOLATION DISMISSED

Issued Apr 13, 2021#14218962

(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 HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.

View this violation's full details & status history →

+ 37 more violations on record — view full report

Get the Complete Report for 503 UNION AVE

Title history, detailed tax records, environmental data, zoning analysis, and more from 250+ government sources.

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Frequently Asked Questions

When was 503 UNION AVE, Brooklyn built?

The building at 503 UNION AVE, Brooklyn, NY 11211 was constructed in 1930. It is classified as a elevator apartment - converted with 5 floors and 24 units. The building area is 36,888 sqft.

Are there building permits at 503 UNION AVE, Brooklyn?

Yes. 503 UNION AVE, Brooklyn, NY 11211 has 43 building permits on record, with 20 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a General Construction (LOC ISSUED) filed Jun 20, 2023.

Does 503 UNION AVE, Brooklyn have violations?

Yes. 503 UNION AVE, Brooklyn, NY 11211 has 42 violations on record, with 1 currently open. Breakdown: 13 DOB, 25 ECB, 4 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 503 UNION AVE, Brooklyn have docketed judgments?

Yes. 503 UNION AVE, Brooklyn, NY 11211 has 14 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $550. A docketed judgment is an enforceable money judgment entered by OATH after a hearing on a summons issued at this property; where the respondent is the property owner it can attach to the property as a lien.

What is the property tax assessment for 503 UNION AVE?

503 UNION AVE, Brooklyn, NY 11211 has an assessed market value of $7.3M and a total assessed value of $3.3M (land: $421K). Assessment data is from the NYC Department of Finance (DOF).

What is the zoning for 503 UNION AVE?

503 UNION AVE, Brooklyn, NY 11211 is zoned M1-2/R6. Zoning data is from the NYC Department of City Planning (DCP). For detailed FAR, overlays, and development rights, view the full property report on RegWatch.

Who owns 503 UNION AVE?

503 UNION AVE, Brooklyn, NY 11211 is company-owned according to public records. Ownership data is from NYC Department of Finance assessment rolls. View the current owner of record and registered contacts in the full property report on RegWatch.

How do I get a full property report for 503 UNION AVE?

Search 503 UNION AVE on RegWatch to see its public record free — violations, permits, tax records, zoning, environmental data, and more from 250+ government sources, no credit card required. A Full Analysis report adds the complete title history, owner contacts, and a downloadable PDF.

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503 UNION AVE, Brooklyn, NY 11211 — Property Records, Permits, Violations, Tax & Zoning | RegWatch