721 UNION AVE, Bronx, NY 10455 — Property Records, Permits, Violations, Tax & Zoning | RegWatch

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Year Built1920

Floors6

Units49

Building Area43,750 sqft

ZoningR6

ClassC7

Market Value$3.7M

721 UNION AVE is a property located at 721 UNION AVE, Bronx, NY 10455. It is classified as a walk-up apartment - over six families with stores. The building was constructed in 1920. It has 6 floors and 49 units. The building area is 43,750 square feet on a 9,600 sqft lot. The property is zoned R6. The assessed market value is $3.7M. It last sold for $6.5M on Apr 27, 2015. Public records list the property as company-owned. There are 28 building permits on record (16 active). There are 1202 violations on record (48 currently open). 55 docketed judgments carrying $2,050 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

4,016records on file

54Energy Star

Completed in 1920, 721 Union Ave rises 6 stories over Bronx. Public records put it at 49 units and 43,750 square feet of floor area, on land zoned R6. It is carried on the public rolls at a market value of $3.7M, and assessed for tax at $1.7M. In the 40 years its record reaches back, the lot has drawn 4,016 separate government filings — a paper trail nearly as tall as the building itself.

The documentary life of the address leans hard toward complaint: 2,517 of its 4,016 records, fully 63%, fall under that one heading. Violation (1,202) and enforcement (94) trail well behind. 48 violations stand 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 2023.

On the environmental ledger, the building posts an Energy Star score of 54, with a site energy-use intensity of 77.6 kBtu per square foot. Its operations answer for roughly 227 metric tons of CO2-equivalent a year.

Read together — 63% complaint, 40 years of accumulation, a parcel of Bronx — these scattered records compose a portrait of the address that no single page sets out to draw.

$3.7M of Bronx, written across 4,016 government filings.

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Executive summary, compliance history, title chain & existing debt, recorded documents & agreements, owner contacts, tax detail, Use & Development, build envelope, market comps, investment metrics, deal math & stress tests, deal signals, pre-foreclosure signals, neighborhood. Downloadable PDF. One payment, no subscription.

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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

latest record Sep 23, 2026

Property Details

Address721 UNION AVE, Bronx, NY 10455

Building TypeWalk-Up Apartment - Over Six Families With Stores

Building ClassC7

Year Built1920

Floors6

Total Units49

Building Area43,750 sqft

Lot Size9,600 sqft

ZoningR6

ConditionAverage

BBL2026650061

BIN2004775

OwnershipCompany-owned

Assessment & Sales

Market Value$3.7M

Assessed Total$1.7M

Assessed Land$108K

Last Sale Price$6.5M

Last Sale DateApr 27, 2015

Building Permits

28 on record · 16 active

Cats RegistrationOther

CURRENT

Filed May 8, 2025Job #460882

View this permit's full record & inspection history →

Cats RegistrationOther

CURRENT

Filed Apr 4, 2025Job #458270

View this permit's full record & inspection history →

General ConstructionDOB NOW

LOC ISSUED

Filed Jan 23, 2025Est. cost $2KJob #X01100698-S1

View this permit's full record & inspection history →

General ConstructionDOB NOW

LOC ISSUED

Filed Jan 23, 2025Est. cost $6KJob #X01100698-I1

View this permit's full record & inspection history →

PlumbingDOB NOW

SIGNED-OFF

Filed Sep 16, 2024Est. cost $6KJob #X01100698-I1

Initial Permit

View this permit's full record & inspection history →

+ 23 more permits — view full report

Violations

1202 on record · 48 open

Open judgment balance — docketed OATH judgments$2,050

Judgments · 55 docketed

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Jun 30, 2026Ticket #049499717Z

LOOSE RUBBISH 1ST OCCURRENCE

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Oct 31, 2025Ticket #048482020L

SPILLAGE FROM A RECEPTACLE 1ST OFFENSE

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Oct 31, 2025Balance $50Ticket #048356335Z

DIRTY SIDEWALK

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Sep 30, 2024Balance $450Ticket #048372885N

SPILLAGE FROM A RECEPTACLE 1ST OFFENSE

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Dec 31, 2024Balance $50Ticket #048276920J

UNCOVERED RECEPTACLES 1ST OCCURRENCE

+ 50 more docketed judgments — view full report

HPDClass B

CIV14 MAILED

Issued Sep 23, 2026#19242959

§ 27-2045(B)(1)(A) HMC, § 12-01, § 12-03 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH DEPARTMENT OF BUILDINGS RULES AND REGULATIONS MISSING IN THE ENTIRE APARTMENT LOCATED AT APT C1, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST , SECTION ''729''

View this violation's full details & status history →

HPDClass B

CIV14 MAILED

Issued Sep 23, 2026#19242960

§ 27-2045(B)(1)(B) HMC, § 12-06, § 12-07, § 12-09 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES MISSING IN THE ENTIRE APARTMENT LOCATED AT APT C1, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST , SECTION ''729''

View this violation's full details & status history →

HPDClass B

CIV14 MAILED

Issued Sep 23, 2026#19242961

§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING AND EAST WALL IN THE BATHROOM LOCATED AT APT C1, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST , SECTION ''729''

View this violation's full details & status history →

HPDClass B

CIV14 MAILED

Issued Sep 23, 2026#19242962

§ 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... GREATER THAN 10SQ.FT AT EAST WALL BEHIND WATER CLOSET IN THE BATHROOM LOCATED AT APT C1, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST , SECTION ''729''

View this violation's full details & status history →

HPDClass B

CIV14 MAILED

Issued Sep 18, 2026#19228870

§ 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE RUBBER GASKET AT REFRIGERATOR DOOR IN THE KITCHEN LOCATED AT APT 2D, 4th STORY, 2nd APARTMENT FROM SOUTH AT WEST , SECTION ''731''

View this violation's full details & status history →

+ 1197 more violations on record — view full report

Get the Complete Report for 721 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 721 UNION AVE, Bronx built?

The building at 721 UNION AVE, Bronx, NY 10455 was constructed in 1920. It is classified as a walk-up apartment - over six families with stores with 6 floors and 49 units. The building area is 43,750 sqft.

Are there building permits at 721 UNION AVE, Bronx?

Yes. 721 UNION AVE, Bronx, NY 10455 has 28 building permits on record, with 16 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Cats Registration (CURRENT) filed May 8, 2025.

Does 721 UNION AVE, Bronx have violations?

Yes. 721 UNION AVE, Bronx, NY 10455 has 1202 violations on record, with 48 currently open. Breakdown: 8 DOB, 5 ECB, 1189 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 721 UNION AVE, Bronx have docketed judgments?

Yes. 721 UNION AVE, Bronx, NY 10455 has 55 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $2,050. 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 721 UNION AVE?

721 UNION AVE, Bronx, NY 10455 has an assessed market value of $3.7M and a total assessed value of $1.7M (land: $108K). Assessment data is from the NYC Department of Finance (DOF).

When was 721 UNION AVE last sold?

721 UNION AVE, Bronx, NY 10455 last sold for $6.5M on Apr 27, 2015. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 721 UNION AVE?

721 UNION AVE, Bronx, NY 10455 is zoned 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 721 UNION AVE?

721 UNION AVE, Bronx, NY 10455 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 721 UNION AVE?

Search 721 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 ($15, one-time) adds the complete title history, owner contacts, and a downloadable PDF.

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721 UNION AVE, Bronx, NY 10455 — Property Records, Permits, Violations, Tax & Zoning | RegWatch