4123 9 AVE, Brooklyn, NY 11232 — Property Records, Permits, Violations, Tax & Zoning | RegWatch

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Year Built1916

Floors4

Units38

Building Area29,960 sqft

ZoningR6

ClassC1

Market Value$1.8M

4123 9 AVE is a property located at 4123 9 AVE, Brooklyn, NY 11232. It is classified as a walk-up apartment - over six families without stores. The building was constructed in 1916. It has 4 floors and 38 units. The building area is 29,960 square feet on a 9,500 sqft lot. The property is zoned R6. The assessed market value is $1.8M. Public records list the property as company-owned. There are 8 building permits on record (1 active). There are 577 violations on record (110 currently open). 66 docketed judgments carrying $16,200 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

1,651records on file

15Energy Star

Completed in 1916, 4123 9 Ave rises 4 stories over Kings. Public records put it at 38 units and 29,960 square feet of floor area, on land zoned R6. It is carried on the public rolls at a market value of $1.8M, and assessed for tax at $813K. In the 55 years its record reaches back, the lot has drawn 1,651 separate government filings — a paper trail nearly as tall as the building itself.

The documentary life of the address leans hard toward complaint: 915 of its 1,651 records, fully 55%, fall under that one heading. Violation (577) and enforcement (82) trail well behind. 110 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 15, with a site energy-use intensity of 105.4 kBtu per square foot. Its operations answer for roughly 195 metric tons of CO2-equivalent a year.

Read together — 55% complaint, 55 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$1.8M of Kings, written across 1,651 government filings.

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Sources

NYC DOB NYC HPD NYC DOF ACRIS NYC DCP ECB/OATH NYC DEP NYC LPC NYC FDNY NYS DHCR MOCEJ FEMA EPA US Census HUD USGS

updated Aug 1, 2026

Property Details

Address4123 9 AVE, Brooklyn, NY 11232

Building TypeWalk-Up Apartment - Over Six Families Without Stores

Building ClassC1

Year Built1916

Floors4

Total Units38

Building Area29,960 sqft

Lot Size9,500 sqft

ZoningR6

ConditionAverage

BBL3055900001

BIN3135532

OwnershipCompany-owned

Assessment & Sales

Market Value$1.8M

Assessed Total$813K

Assessed Land$140K

Building Permits

8 on record · 1 active

Cats Registration InspectionOther

EXPIRED

Filed Jul 27, 2023Job #394561

View this permit's full record & inspection history →

ElectricalDOB NOW

APPROVED

Filed Apr 28, 2021Job #B00388056-P1

Filing to cure ECB violation 35454312N

View this permit's full record & inspection history →

ElectricalDOB NOW

COMPLETE

Filed Aug 20, 2020Job #B00388056-I1-EL

Filing to cure ECB violation 35454312N

View this permit's full record & inspection history →

Dec Bulk StorageOther

IN SERVICE

Filed Sep 18, 1987Job #PBS:2-273589:001:DIESEL

View this permit's full record & inspection history →

Limited AlterationDOB NOW

SIGNED OFF

Filed N/AJob #B00424999-I1

View this permit's full record & inspection history →

+ 3 more permits — view full report

Violations

577 on record · 110 open

Open judgment balance — docketed OATH judgments$16,200

Judgments · 66 docketed

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Jun 22, 2026Balance $300Ticket #049623857X

DIRTY SIDEWALK

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Jun 30, 2026Balance $300Ticket #049545040K

DIRTY SIDEWALK

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Apr 30, 2026Balance $300Ticket #049511299Y

DIRTY SIDEWALK

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Apr 30, 2026Balance $300Ticket #049388050H

UNCOVERED RECEPTACLES 1ST OCCURRENCE

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Apr 30, 2026Balance $300Ticket #049300227P

DIRTY SIDEWALK

+ 61 more docketed judgments — view full report

HPDClass C

NOV SENT OUT

Issued Jun 23, 2026#19026718

§ 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES IN THE ENTRANCE LOCATED AT APT B3, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH , SECTION ''SOUTH''

View this violation's full details & status history →

HPDClass B

NOV SENT OUT

Issued Jun 2, 2026#18973994

§ 27-2045(B)(1)(A) HMC, § 12-01, § 12-03 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH DEPARTMENT OF BUILDINGS RULES AND REGULATIONS DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT B31, 3rd STORY, 2nd APARTMENT FROM SOUTH AT WEST , SECTION AT SOUTH

View this violation's full details & status history →

HPDClass B

NOV SENT OUT

Issued Jun 2, 2026#18973995

§ 27-2045(B)(1)(B) HMC, § 12-06, § 12-07, § 12-09 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT B31, 3rd STORY, 2nd APARTMENT FROM SOUTH AT WEST , SECTION AT SOUTH

View this violation's full details & status history →

HPDClass C

NOV SENT OUT

Issued Jun 2, 2026#18973996

§ 27-2043.1 HMC INSTALL THE MISSING OR REPAIR/REPLACE THE DEFECTIVE WINDOW GUARD(S) IN ACCORDANCE WITH THE SPECIFICATIONS OF THE NEW YORK CITY HEALTH CODE SECTION 24 RCNY CHAPTER 12. WG TO INSTALL = 0, WG TO REPLACE = 0, WG TO REPAIR = 2 IN THE ENTIRE APARTMENT LOCATED AT APT B31, 3rd STORY, 2nd APARTMENT FROM SOUTH AT WEST , SECTION AT SOUTH

View this violation's full details & status history →

HPDClass A

NOV SENT OUT

Issued Jun 2, 2026#18973997

§ 27-2011 ADM CODE CLEANSE TO THE SATISFACTION OF THIS DEPARTMENT THE VISIBLE MOLD AT CAULKING AND GROUT JOINTS OF THE CERAMIC TILES AT WEST, NORTH AND EAST WALLS AROUND BATHTUB, IN THE BATHROOM LOCATED AT APT B31, 3rd STORY, 2nd APARTMENT FROM SOUTH AT WEST , SECTION AT SOUTH

View this violation's full details & status history →

+ 572 more violations on record — view full report

Get the Complete Report for 4123 9 AVE

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Frequently Asked Questions

When was 4123 9 AVE, Brooklyn built?

The building at 4123 9 AVE, Brooklyn, NY 11232 was constructed in 1916. It is classified as a walk-up apartment - over six families without stores with 4 floors and 38 units. The building area is 29,960 sqft.

Are there building permits at 4123 9 AVE, Brooklyn?

Yes. 4123 9 AVE, Brooklyn, NY 11232 has 8 building permits on record, with 1 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 (EXPIRED) filed Jul 27, 2023.

Does 4123 9 AVE, Brooklyn have violations?

Yes. 4123 9 AVE, Brooklyn, NY 11232 has 577 violations on record, with 110 currently open. Breakdown: 3 DOB, 8 ECB, 566 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 4123 9 AVE, Brooklyn have docketed judgments?

Yes. 4123 9 AVE, Brooklyn, NY 11232 has 66 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $16,200. 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 4123 9 AVE?

4123 9 AVE, Brooklyn, NY 11232 has an assessed market value of $1.8M and a total assessed value of $813K (land: $140K). Assessment data is from the NYC Department of Finance (DOF).

What is the zoning for 4123 9 AVE?

4123 9 AVE, Brooklyn, NY 11232 is zoned R6. 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 4123 9 AVE?

4123 9 AVE, Brooklyn, NY 11232 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 4123 9 AVE?

Search 4123 9 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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4123 9 AVE, Brooklyn, NY 11232 — Property Records, Permits, Violations, Tax & Zoning | RegWatch