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Brooklyn • Elevator Apartment

520 East 21 St

Brooklyn, NY 11226Company-ownedBBL 3051840006BIN 3119497
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16 sources

Year Built1951
Floors6
Units102
Building Area103,494 sqft
ZoningR7A
ClassD1
Market Value$8.3M

520 EAST 21 ST is a property located at 520 EAST 21 ST, Brooklyn, NY 11226. It is classified as a elevator apartment - semi-fireproof. The building was constructed in 1951. It has 6 floors and 102 units. The building area is 103,494 square feet on a 27,000 sqft lot. The property is zoned R7A. The assessed market value is $8.3M. It last sold for $26.5M on Mar 30, 2015. Public records list the property as company-owned. There are 30 building permits on record (17 active). There are 1251 violations on record (283 currently open). 68 docketed judgments carrying $37,101 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

3,236records on file
68Energy Star

Completed in 1951, 520 East 21 St rises 6 stories over Kings. Public records put it at 102 units and 103,494 square feet of floor area, on land zoned R7A. It is carried on the public rolls at a market value of $8.3M, and assessed for tax at $3.7M. In the 56 years its record reaches back, the lot has drawn 3,236 separate government filings — a paper trail nearly as tall as the building itself.

The documentary life of the address leans hard toward complaint: 1,662 of its 3,236 records, fully 51%, fall under that one heading. Violation (1,251) and enforcement (131) trail well behind. 283 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 2025.

On the environmental ledger, the building posts an Energy Star score of 68, with a site energy-use intensity of 82.2 kBtu per square foot. Its operations answer for roughly 543 metric tons of CO2-equivalent a year.

Read together — 51% complaint, 56 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$8.3M of Kings, written across 3,236 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 DOBNYC HPDNYC DOFACRISNYC DCPECB/OATHNYC DEPNYC LPCNYC FDNYNYS DHCRMOCEJFEMAEPAUS CensusHUDUSGS
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Property Details

Address520 EAST 21 ST, Brooklyn, NY 11226
Building TypeElevator Apartment - Semi-Fireproof
D1
Year Built1951
Floors6
Total Units102
Building Area103,494 sqft
Lot Size27,000 sqft
ZoningR7A
ConditionAverage
3051840006
3119497
OwnershipCompany-owned

Assessment & Sales

$8.3M
$3.7M
$790K
$26.5M
Last Sale DateMar 30, 2015

Building Permits

30 on record · 17 active
General ConstructionDOB NOW
LOC ISSUED
Filed Apr 1, 2026Est. cost $1KJob #B01038815-I1
View this permit's full record & inspection history →
ElectricalDOB NOW
PERMIT ISSUED
Filed Feb 16, 2026Job #B01360284-I1-EL

Installing 18 EV Chargers

View this permit's full record & inspection history →
Sidewalk ShedDOB NOW
SIGNED-OFF
Filed Apr 21, 2025Est. cost $1KJob #B01038815-I1

Renewal Permit Without Changes

View this permit's full record & inspection history →
Cats Certificate To OperateOther
EXPIRED
Filed Apr 1, 2025Job #298055
View this permit's full record & inspection history →
ElectricalDOB NOW
PERMIT ISSUED
Filed Apr 23, 2024Job #B01040286-I1-EL

INSTALLATION OF LIGHTING FOR SIDEWALK SHED 445 LF

View this permit's full record & inspection history →

+ 25 more permits — view full report

Violations

1251 on record · 283 open
Open judgment balance — docketed OATH judgments$37,101
Judgments · 68 docketed
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Mar 31, 2026Balance $300Ticket #049297558P
STORAGE OF RECEPTACLES PLACED OUT PRIOR TO 8PM WITHOUT A RECEPTACLE
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Feb 28, 2026Balance $1,250Ticket #039154762L
FAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEM
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Jun 30, 2025Balance $300Ticket #048815427X
IMPROPER DISPOSAL--BEDDING 1ST OCCURRENCE
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Jun 30, 2025Balance $300Ticket #048097084J
IMPROPER DISPOSAL--BEDDING 1ST OCCURRENCE
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Apr 30, 2025Balance $300Ticket #048613143Z
FAILURE TO CLEAN 18 INCHES INTO STREET

+ 63 more docketed judgments — view full report

HPDClass B
NOV SENT OUT
Issued Oct 21, 2026#19314376

§ 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE REFRIGERATOR SEAL AT BOTTOM DOOR IN THE KITCHEN LOCATED AT APT 4G, 4th STORY, 1st APARTMENT FROM NORTH AT EAST , SECTION ''NORTH''

View this violation's full details & status history →
HPDClass C
NOTICE OF ISSUANCE SENT TO TENANT
Issued Oct 21, 2026#19314377

HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 4G, 4th STORY, 1st APARTMENT FROM NORTH AT EAST , SECTION ''NORTH''

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Oct 21, 2026#19314378

§ 27-2026 ADM CODE REPAIR THE FLUSHING APPARATUS AND MAINTAIN SAME SO AS TO FLUSH EFFECTIVELY THE WATER CLOSET . IN THE BATHROOM LOCATED AT APT 4G, 4th STORY, 1st APARTMENT FROM NORTH AT EAST , SECTION ''NORTH''

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Oct 21, 2026#19314379

§ 27-2026, 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK AT CEILING IN THE 4th ROOM FROM NORTH LOCATED AT APT 4G, 4th STORY, 1st APARTMENT FROM NORTH AT EAST , SECTION ''NORTH''

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Oct 21, 2026#19314380

§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING AND NORTH WALL IN THE 4th ROOM FROM NORTH LOCATED AT APT 4G, 4th STORY, 1st APARTMENT FROM NORTH AT EAST , SECTION ''NORTH''

View this violation's full details & status history →

+ 1246 more violations on record — view full report

Get the Complete Report for 520 EAST 21 ST

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

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Frequently Asked Questions

When was 520 EAST 21 ST, Brooklyn built?

The building at 520 EAST 21 ST, Brooklyn, NY 11226 was constructed in 1951. It is classified as a elevator apartment - semi-fireproof with 6 floors and 102 units. The building area is 103,494 sqft.

Are there building permits at 520 EAST 21 ST, Brooklyn?

Yes. 520 EAST 21 ST, Brooklyn, NY 11226 has 30 building permits on record, with 17 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 Apr 1, 2026.

Does 520 EAST 21 ST, Brooklyn have violations?

Yes. 520 EAST 21 ST, Brooklyn, NY 11226 has 1251 violations on record, with 283 currently open. Breakdown: 19 DOB Safety, 53 DOB, 68 ECB, 1111 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 520 EAST 21 ST, Brooklyn have docketed judgments?

Yes. 520 EAST 21 ST, Brooklyn, NY 11226 has 68 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $37,101. 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 520 EAST 21 ST?

520 EAST 21 ST, Brooklyn, NY 11226 has an assessed market value of $8.3M and a total assessed value of $3.7M (land: $790K). Assessment data is from the NYC Department of Finance (DOF).

When was 520 EAST 21 ST last sold?

520 EAST 21 ST, Brooklyn, NY 11226 last sold for $26.5M on Mar 30, 2015. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 520 EAST 21 ST?

520 EAST 21 ST, Brooklyn, NY 11226 is zoned R7A. 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 520 EAST 21 ST?

520 EAST 21 ST, Brooklyn, NY 11226 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 520 EAST 21 ST?

Search 520 EAST 21 ST 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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520 EAST 21 ST, Brooklyn, NY 11226 — Property Records, Permits, Violations, Tax & Zoning | RegWatch