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Brooklyn • Two Family Dwelling

18 South Portland Ave

Brooklyn, NY 11217Individually ownedBBL 3020990051BIN 3058817
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Updated Aug 1, 2026 · 16 sources

Year Built1861
Floors3
Units2
Building Area3,200 sqft
ZoningR6B
ClassB3
Market Value$4.2M

18 SOUTH PORTLAND AVE is a property located at 18 SOUTH PORTLAND AVE, Brooklyn, NY 11217. It is classified as a two family dwelling - converted. The building was constructed in 1861. It has 3 floors and 2 units. The building area is 3,200 square feet on a 2,000 sqft lot. The property is zoned R6B. The assessed market value is $4.2M. Public records list the property as individually owned. There are 7 building permits on record (0 active). Data sourced from NYC Department of Buildings (DOB), Housing Preservation & Development (HPD), Department of Finance (DOF), and other government agencies.

A RegWatch Dossier

49records on file

Completed in 1861, 18 South Portland Ave rises 3 stories over Kings. Public records put it at 2 units and 3,200 square feet of floor area, on land zoned R6B. It is carried on the public rolls at a market value of $4.2M, and assessed for tax at $251K. In the 56 years its record reaches back, the lot has drawn 49 separate government filings.

The documentary life of the address leans hard toward mortgage: 16 of its 49 records, fully 33%, fall under that one heading. Assignment (10) and permit (7) trail well behind. No 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 2003.

Read together — 33% mortgage, 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.

$4.2M of Kings, written across 49 government filings.

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

Property Details

Address18 SOUTH PORTLAND AVE, Brooklyn, NY 11217
Building TypeTwo Family Dwelling - Converted
B3
Year Built1861
Floors3
Total Units2
Building Area3,200 sqft
Lot Size2,000 sqft
ZoningR6B
ConditionAverage
3020990051
3058817
OwnershipIndividually owned

Assessment & Sales

$4.2M
$251K
$37K

Building Permits

7 on record
General ConstructionDOB NOW
LOC ISSUED
Filed Aug 20, 2024Est. cost $44KJob #B01072037-I1
View this permit's full record & inspection history →
SolarDOB NOW
SIGNED-OFF
Filed Jul 8, 2024Est. cost $44KJob #B01072037-I1

Initial Permit

View this permit's full record & inspection history →
ElectricalDOB NOW
COMPLETE
Filed Jun 25, 2024Job #B01072084-I1-EL

ELECTRICAL PERMIT TO INSTALL 13 430 WATT PANELS WITH 13 ENPHASE IQ8MC MICROINVERTERS. SIZE 10 FEEDERS CONNECTING TO 3 STRINGS OF 7, 3, AND 3 PANELS AND MICROINVERTERS AS WELL AS TWO JUNCTION BOXES AND ONE COMBINER BOX. TWO 2POLE 20A BREAKERS CONNECTING TO A DISCONNECT SWITCH. SIZE 10 FEEDERS CONNECTING TO TWO 60A DISCONNECTS WITH 20A FUSES SIZE 4 SERVICE ENTRANCE CONDUCTORS CONNECTING TO THE 2ND AND 3RD FLOOR SERVICE PANEL AND BASEMENT SERVICE PANEL, RESPECTIVELY.

View this permit's full record & inspection history →
ElectricalDOB NOW
COMPLETE
Filed Apr 5, 2024Job #B01031202-I1-EL

From the existing parlor floor panel box located in the hallway, we will extend a new 8/3 50A line to the stove in the kitchen and terminate into a 4 prong outlet. No other work was done.

View this permit's full record & inspection history →
Limited AlterationDOB NOW
SIGNED OFF
Filed N/AJob #B01031332-I1
View this permit's full record & inspection history →

+ 2 more permits — view full report

Violations

none on record

No violations found in local records.

Get the Complete Report for 18 SOUTH PORTLAND 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 18 SOUTH PORTLAND AVE, Brooklyn built?

The building at 18 SOUTH PORTLAND AVE, Brooklyn, NY 11217 was constructed in 1861. It is classified as a two family dwelling - converted with 3 floors and 2 units. The building area is 3,200 sqft.

Are there building permits at 18 SOUTH PORTLAND AVE, Brooklyn?

Yes. 18 SOUTH PORTLAND AVE, Brooklyn, NY 11217 has 7 building permits on record, with 0 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 Aug 20, 2024.

Does 18 SOUTH PORTLAND AVE, Brooklyn have violations?

No violations were found in local records for 18 SOUTH PORTLAND AVE, Brooklyn, NY 11217. Violation data is sourced from DOB (safety and legacy), HPD (housing), and ECB (environmental control).

Does 18 SOUTH PORTLAND AVE, Brooklyn have docketed judgments?

No docketed OATH judgments were found in local records for 18 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 18 SOUTH PORTLAND AVE?

18 SOUTH PORTLAND AVE, Brooklyn, NY 11217 has an assessed market value of $4.2M and a total assessed value of $251K (land: $37K). Assessment data is from the NYC Department of Finance (DOF).

What is the zoning for 18 SOUTH PORTLAND AVE?

18 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 18 SOUTH PORTLAND AVE?

18 SOUTH PORTLAND AVE, Brooklyn, NY 11217 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 18 SOUTH PORTLAND AVE?

Search 18 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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18 SOUTH PORTLAND AVE, Brooklyn, NY 11217 — Property Records, Permits, Violations, Tax & Zoning | RegWatch