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4123 9 Ave

Brooklyn, NY 11232Company-ownedBBL 3055900001BIN 3135532
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16 sources

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 594 violations on record (113 currently open). 69 docketed judgments carrying $29,300 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

1,725records 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 1,725 separate government filings — a paper trail nearly as tall as the building itself.

The documentary life of the address leans hard toward complaint: 964 of its 1,725 records, fully 56%, fall under that one heading. Violation (594) and enforcement (84) trail well behind. 113 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 2026.

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 — 56% 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 1,725 government filings.

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Executive summary, compliance history, title chain & existing debt, recorded documents & agreements, owner contacts, tax detail, Use & Development, build envelope, market comps, investment metrics, deal math & stress tests, deal signals, pre-foreclosure signals, neighborhood. Downloadable PDF. One payment, no subscription.

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

Address4123 9 AVE, Brooklyn, NY 11232
Building TypeWalk-Up Apartment - Over Six Families Without Stores
C1
Year Built1916
Floors4
Total Units38
Building Area29,960 sqft
Lot Size9,500 sqft
ZoningR6
ConditionAverage
3055900001
3135532
OwnershipCompany-owned

Assessment & Sales

$1.8M
$813K
$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

594 on record · 113 open
Open judgment balance — docketed OATH judgments$29,300
Judgments · 69 docketed
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Oct 31, 2026Balance $12,500Ticket #039187442N
UNLAWFUL ACTS.FAILURE TO COMPLY WITH AN ORDER OF THE COMMISSIONER
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Sep 18, 2026Balance $300Ticket #049680952P
SIDEWALK OBSTRUCTION
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Sep 30, 2026Balance $300Ticket #049318577K
DIRTY SIDEWALK
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

+ 64 more docketed judgments — view full report

HPDClass B
NOV SENT OUT
Issued Oct 12, 2026#19293388

§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING IN THE BATHROOM LOCATED AT APT B3, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Oct 12, 2026#19293389

§ 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 B3, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH

View this violation's full details & status history →
HPDClass A
NOTICE OF ISSUANCE SENT TO TENANT
Issued Oct 12, 2026#19293390

§ 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... LESS THAN 10 SQUARE FEET AT CEILING IN THE BATHROOM LOCATED AT APT B3, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Oct 12, 2026#19293391

§ 27-2026, 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK AT CEILING IN THE BATHROOM LOCATED AT APT B3, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Oct 12, 2026#19293392

§ 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 B3, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH

View this violation's full details & status history →

+ 589 more violations on record — view full report

Get the Complete Report for 4123 9 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 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 594 violations on record, with 113 currently open. Breakdown: 3 DOB, 8 ECB, 583 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 4123 9 AVE, Brooklyn have docketed judgments?

Yes. 4123 9 AVE, Brooklyn, NY 11232 has 69 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $29,300. 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 ($15, one-time) 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