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49 Clarkson Ave

Brooklyn, NY 11226Company-ownedBBL 3050550082BIN 3115980
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Updated Aug 1, 2026 · 16 sources

Year Built1925
Floors4
Units47
Building Area51,524 sqft
ZoningR7-1
ClassC1
Market Value$2.9M

49 CLARKSON AVE is a property located at 49 CLARKSON AVE, Brooklyn, NY 11226. It is classified as a walk-up apartment - over six families without stores. The building was constructed in 1925. It has 4 floors and 47 units. The building area is 51,524 square feet on a 15,038 sqft lot. The property is zoned R7-1. The assessed market value is $2.9M. It last sold for $2.3M on Nov 4, 2004. Public records list the property as company-owned. There are 15 building permits on record (9 active). There are 40 violations on record (3 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

464records on file
94Energy Star

Completed in 1925, 49 Clarkson Ave rises 4 stories over Kings. Public records put it at 47 units and 51,524 square feet of floor area, on land zoned R7-1. It is carried on the public rolls at a market value of $2.9M, and assessed for tax at $1.3M. In the 60 years its record reaches back, the lot has drawn 464 separate government filings.

The documentary life of the address leans hard toward complaint: 338 of its 464 records, fully 73%, fall under that one heading. Violation (40) and assignment (18) trail well behind. 3 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 2007.

On the environmental ledger, the building posts an Energy Star score of 94, with a site energy-use intensity of 55.3 kBtu per square foot. Its operations answer for roughly 176 metric tons of CO2-equivalent a year.

Read together — 73% complaint, 60 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

73% of every record here performs the same act: complaint.

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

Property Details

Address49 CLARKSON AVE, Brooklyn, NY 11226
Building TypeWalk-Up Apartment - Over Six Families Without Stores
C1
Year Built1925
Floors4
Total Units47
Building Area51,524 sqft
Lot Size15,038 sqft
ZoningR7-1
ConditionAverage
3050550082
3115980
OwnershipCompany-owned

Assessment & Sales

$2.9M
$1.3M
$305K
$2.3M
Last Sale DateNov 4, 2004

Building Permits

15 on record · 9 active
Cats Registration InspectionOther
CURRENT
Filed May 15, 2024Job #419296
View this permit's full record & inspection history →
Alteration — Type 2DOB Legacy
SIGNED OFF
Filed Sep 29, 2018Est. cost $76KJob #321213281-01

FACADE

View this permit's full record & inspection history →
Alteration — Type 3DOB Legacy
SIGNED OFF
Filed Jun 15, 2017Job #340152266-01
View this permit's full record & inspection history →
Construction EquipmentDOB Legacy
ISSUED
Filed Mar 27, 2017Job #321213281-01-04

OT

View this permit's full record & inspection history →
Construction EquipmentDOB Legacy
ISSUED
Filed Jun 2, 2016Job #340152266-01-03

EQ

View this permit's full record & inspection history →

+ 10 more permits — view full report

Violations

40 on record · 3 open
HPDClass B
NOV CERTIFIED ON TIME
Issued Jun 1, 2026#18972974

§ 27-2005, 2007 ADM CODE AND DEPT. RULES AND REGULATIONS. REMOVE THE ENCUMBRANCE OBSTRUCTING EGRESS FROM FIRE ESCAPES AIR CONDTIONER PROTRUDING MORE THAN 4 INCHES OVER SILL AT 2ND STACK FROM WEST AT SOUTH AT FIRE ESCAPE, 2nd STORY

View this violation's full details & status history →

+ 39 more violations on record — view full report

Get the Complete Report for 49 CLARKSON 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 49 CLARKSON AVE, Brooklyn built?

The building at 49 CLARKSON AVE, Brooklyn, NY 11226 was constructed in 1925. It is classified as a walk-up apartment - over six families without stores with 4 floors and 47 units. The building area is 51,524 sqft.

Are there building permits at 49 CLARKSON AVE, Brooklyn?

Yes. 49 CLARKSON AVE, Brooklyn, NY 11226 has 15 building permits on record, with 9 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 Inspection (CURRENT) filed May 15, 2024.

Does 49 CLARKSON AVE, Brooklyn have violations?

Yes. 49 CLARKSON AVE, Brooklyn, NY 11226 has 40 violations on record, with 3 currently open. Breakdown: 6 DOB, 1 ECB, 33 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 49 CLARKSON AVE, Brooklyn have docketed judgments?

No docketed OATH judgments were found in local records for 49 CLARKSON AVE, Brooklyn, NY 11226. Judgment data is sourced from NYC Office of Administrative Trials & Hearings (OATH) hearing records.

What is the property tax assessment for 49 CLARKSON AVE?

49 CLARKSON AVE, Brooklyn, NY 11226 has an assessed market value of $2.9M and a total assessed value of $1.3M (land: $305K). Assessment data is from the NYC Department of Finance (DOF).

When was 49 CLARKSON AVE last sold?

49 CLARKSON AVE, Brooklyn, NY 11226 last sold for $2.3M on Nov 4, 2004. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 49 CLARKSON AVE?

49 CLARKSON AVE, Brooklyn, NY 11226 is zoned R7-1. 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 49 CLARKSON AVE?

49 CLARKSON AVE, 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 49 CLARKSON AVE?

Search 49 CLARKSON 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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49 CLARKSON AVE, Brooklyn, NY 11226 — Property Records, Permits, Violations, Tax & Zoning | RegWatch