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21 South Portland Ave

Brooklyn, NY 11217Company-ownedBBL 3021000024BIN 3058878
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Updated Aug 1, 2026 · 16 sources

Year Built1875
Floors4
Units9
Building Area5,540 sqft
ZoningR6B
ClassC6
Market Value$3.6M

21 SOUTH PORTLAND AVE is a property located at 21 SOUTH PORTLAND AVE, Brooklyn, NY 11217. It is classified as a walk-up apartment - cooperative. The building was constructed in 1875. It has 4 floors and 9 units. The building area is 5,540 square feet on a 2,500 sqft lot. The property is zoned R6B. The assessed market value is $3.6M. Public records list the property as company-owned. There are 7 building permits on record (4 active). There are 21 violations on record (10 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

73records on file

Completed in 1875, 21 South Portland Ave rises 4 stories over Kings. Public records put it at 9 units and 5,540 square feet of floor area, on land zoned R6B. It is carried on the public rolls at a market value of $3.6M, and assessed for tax at $1.6M. In the 57 years its record reaches back, the lot has drawn 73 separate government filings.

The documentary life of the address leans hard toward violation: 21 of its 73 records, fully 29%, fall under that one heading. Inspection (17) and permit (7) trail well behind. 10 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 1986.

Read together — 29% violation, 57 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$3.6M of Kings, written across 73 government filings.

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

Property Details

Address21 SOUTH PORTLAND AVE, Brooklyn, NY 11217
Building TypeWalk-Up Apartment - Cooperative
C6
Year Built1875
Floors4
Total Units9
Building Area5,540 sqft
Lot Size2,500 sqft
ZoningR6B
ConditionAverage
3021000024
3058878
OwnershipCompany-owned

Assessment & Sales

$3.6M
$1.6M
$12K

Building Permits

7 on record · 4 active
Cats RegistrationOther
CURRENT
Filed Jul 15, 2024Job #432150
View this permit's full record & inspection history →
Alteration — Type 2DOB Legacy
SIGNED OFF
Filed Nov 2, 2006Est. cost $3KJob #302223804-01
View this permit's full record & inspection history →
Construction EquipmentDOB Legacy
ISSUED
Filed Sep 13, 2006Job #302223804-01-01

FS

View this permit's full record & inspection history →
Construction EquipmentDOB Legacy
ISSUED
Filed Sep 13, 2006Job #302223804-1-1-hist

FS

View this permit's full record & inspection history →
Alteration — Type 2DOB Legacy
SIGNED OFF
Filed Dec 6, 2005Job #302029310-01
View this permit's full record & inspection history →

+ 2 more permits — view full report

Violations

21 on record · 10 open
HPDClass A
NOV SENT OUT
Issued May 5, 2026#18883924

(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
NOV SENT OUT
Issued Jun 10, 2025#17994292

(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 B
NOV SENT OUT
Issued Jun 28, 1998#2154615

SECTION 27-2040 ADM CODE PROVIDE ADEQUATE LIGHTING AT OR NEAR THE OUTSIDE OF THE FRONT ENTRANCEWAY OF THE BUILDING AND KEEP SAME BURNING FROM SUNSET EVERY DAY TO SUNRISE ON THE DAY FOLLOWING 100 WATTS MINIMUM REQUIRED FIXTURE PRESENT LIGHT NOT ON

View this violation's full details & status history →
DOB LegacyLocal Law 62/91
ACTIVE
Issued May 4, 1998#583887
View this violation's full details & status history →
HPDClass C
NOV SENT OUT
Issued Nov 16, 1995#2078257

SECTION 27-2013 ADM CODE REMOVE OR COVER IN A MANNER APPROVED BY THE DEPARTMENT THE PEELING LEAD PAINT CEILING WEST ROOM 2 STY EAST APT 2R ER1 95029902 , SECTION '' ''

View this violation's full details & status history →

+ 16 more violations on record — view full report

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

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Frequently Asked Questions

When was 21 SOUTH PORTLAND AVE, Brooklyn built?

The building at 21 SOUTH PORTLAND AVE, Brooklyn, NY 11217 was constructed in 1875. It is classified as a walk-up apartment - cooperative with 4 floors and 9 units. The building area is 5,540 sqft.

Are there building permits at 21 SOUTH PORTLAND AVE, Brooklyn?

Yes. 21 SOUTH PORTLAND AVE, Brooklyn, NY 11217 has 7 building permits on record, with 4 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 Jul 15, 2024.

Does 21 SOUTH PORTLAND AVE, Brooklyn have violations?

Yes. 21 SOUTH PORTLAND AVE, Brooklyn, NY 11217 has 21 violations on record, with 10 currently open. Breakdown: 6 DOB, 15 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 21 SOUTH PORTLAND AVE, Brooklyn have docketed judgments?

No docketed OATH judgments were found in local records for 21 SOUTH PORTLAND AVE, Brooklyn, NY 11217. Judgment data is sourced from NYC Office of Administrative Trials & Hearings (OATH) hearing records.

What is the property tax assessment for 21 SOUTH PORTLAND AVE?

21 SOUTH PORTLAND AVE, Brooklyn, NY 11217 has an assessed market value of $3.6M and a total assessed value of $1.6M (land: $12K). Assessment data is from the NYC Department of Finance (DOF).

What is the zoning for 21 SOUTH PORTLAND AVE?

21 SOUTH PORTLAND AVE, Brooklyn, NY 11217 is zoned R6B. 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 21 SOUTH PORTLAND AVE?

21 SOUTH PORTLAND AVE, Brooklyn, NY 11217 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 21 SOUTH PORTLAND AVE?

Search 21 SOUTH PORTLAND 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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21 SOUTH PORTLAND AVE, Brooklyn, NY 11217 — Property Records, Permits, Violations, Tax & Zoning | RegWatch