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6813 21 Ave

Brooklyn, NY 11204Individually ownedBBL 3055800001BIN 3135116
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Updated Aug 1, 2026 · 16 sources

Year Built1926
Floors4
Units42
Building Area34,000 sqft
ZoningR5
ClassC1
Market Value$2.1M

6813 21 AVE is a property located at 6813 21 AVE, Brooklyn, NY 11204. It is classified as a walk-up apartment - over six families without stores. The building was constructed in 1926. It has 4 floors and 42 units. The building area is 34,000 square feet on a 9,667 sqft lot. The property is zoned R5. The assessed market value is $2.1M. Public records list the property as individually owned. There are 7 building permits on record (3 active). There are 83 violations on record (49 currently open). Data sourced from NYC Department of Buildings (DOB), Housing Preservation & Development (HPD), Department of Finance (DOF), and other government agencies.

A RegWatch Dossier

342records on file
27Energy Star

Completed in 1926, 6813 21 Ave rises 4 stories over Kings. Public records put it at 42 units and 34,000 square feet of floor area, on land zoned R5. It is carried on the public rolls at a market value of $2.1M, and assessed for tax at $929K. In the 50 years its record reaches back, the lot has drawn 342 separate government filings.

The documentary life of the address leans hard toward complaint: 205 of its 342 records, fully 60%, fall under that one heading. Violation (83) and inspection (18) trail well behind. 49 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 2011.

On the environmental ledger, the building posts an Energy Star score of 27, with a site energy-use intensity of 99.0 kBtu per square foot. Its operations answer for roughly 201 metric tons of CO2-equivalent a year.

Read together — 60% complaint, 50 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$2.1M of Kings, written across 342 government filings.

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Sources
NYC DOBNYC HPDNYC DOFACRISNYC DCPECB/OATHNYC DEPNYC LPCNYC FDNYNYS DHCRMOCEJFEMAEPAUS CensusHUDUSGS
updated

Property Details

Address6813 21 AVE, Brooklyn, NY 11204
Building TypeWalk-Up Apartment - Over Six Families Without Stores
C1
Year Built1926
Floors4
Total Units42
Building Area34,000 sqft
Lot Size9,667 sqft
ZoningR5
ConditionAverage
3055800001
3135116
OwnershipIndividually owned

Assessment & Sales

$2.1M
$929K
$87K

Building Permits

7 on record · 3 active
Cats RegistrationOther
CURRENT
Filed Aug 7, 2025Job #469349
View this permit's full record & inspection history →
ElectricalDOB NOW
APPROVED
Filed Apr 5, 2024Job #B00984691-P1

Panel preplacement Boiler room and Basement

View this permit's full record & inspection history →
ElectricalDOB NOW
COMPLETE
Filed Jan 3, 2024Job #B00984691-I1-EL

Panel preplacement Boiler room and Basement

View this permit's full record & inspection history →
Alteration — Type 2DOB Legacy
SIGNED OFF
Filed Jun 17, 2014Est. cost $10KJob #340075368-01
View this permit's full record & inspection history →
Construction EquipmentDOB Legacy
ISSUED
Filed Jul 25, 2013Job #340075368-01-01

PL

View this permit's full record & inspection history →

+ 2 more permits — view full report

Violations

83 on record · 49 open
HPDClass B
NOV SENT OUT
Issued Mar 7, 2022#14970952

§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE FIRE RETARDANT AT CEILING AND SOUTH WALL AT PUBLIC HALL, 1st STORY

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Mar 7, 2022#14970954

§ 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF PLEXIGLASS INSTALLED AT VESTIBULE DOOR AT PUBLIC HALL, 1st STORY

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Mar 7, 2022#14970955

§ 27-2005 ADM CODE REPLACE WITH NEW THE MISSING GLASS PANEL AT VESTIBULE DOOR AT PUBLIC HALL, 1st STORY

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Dec 21, 2021#14740714

§ 27-2005 ADM CODE PROVIDE A HEAVY DUTY MECHANICAL LOCK TO DOOR AT BUILDING FRONT ENTRANCE

View this violation's full details & status history →
HPDClass C
INVALID CERTIFICATION
Issued Dec 21, 2021#14740713

§ 27-2005, 2007 ADM CODE REMOVE THE ILLEGAL FASTENING CONSISTINGOF AN ELECTROMAGNETIC LOCKING DEVICE INSTALLED AT BUILDING FRONT ENTRANCE DOOR

View this violation's full details & status history →

+ 78 more violations on record — view full report

Get the Complete Report for 6813 21 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 6813 21 AVE, Brooklyn built?

The building at 6813 21 AVE, Brooklyn, NY 11204 was constructed in 1926. It is classified as a walk-up apartment - over six families without stores with 4 floors and 42 units. The building area is 34,000 sqft.

Are there building permits at 6813 21 AVE, Brooklyn?

Yes. 6813 21 AVE, Brooklyn, NY 11204 has 7 building permits on record, with 3 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 Aug 7, 2025.

Does 6813 21 AVE, Brooklyn have violations?

Yes. 6813 21 AVE, Brooklyn, NY 11204 has 83 violations on record, with 49 currently open. Breakdown: 2 DOB, 81 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 6813 21 AVE, Brooklyn have docketed judgments?

No docketed OATH judgments were found in local records for 6813 21 AVE, Brooklyn, NY 11204. Judgment data is sourced from NYC Office of Administrative Trials & Hearings (OATH) hearing records.

What is the property tax assessment for 6813 21 AVE?

6813 21 AVE, Brooklyn, NY 11204 has an assessed market value of $2.1M and a total assessed value of $929K (land: $87K). Assessment data is from the NYC Department of Finance (DOF).

What is the zoning for 6813 21 AVE?

6813 21 AVE, Brooklyn, NY 11204 is zoned R5. 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 6813 21 AVE?

6813 21 AVE, Brooklyn, NY 11204 is individually 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 6813 21 AVE?

Search 6813 21 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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6813 21 AVE, Brooklyn, NY 11204 — Property Records, Permits, Violations, Tax & Zoning | RegWatch