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Brooklyn • Elevator Apartment

561 Knickerbocker Ave

Brooklyn, NY 11237Individually ownedBBL 3033350001BIN 3346901
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16 sources

Year Built1998
Floors6
Units43
Building Area61,650 sqft
ZoningR6
ClassD1
Market Value$4.7M

561 KNICKERBOCKER AVE is a property located at 561 KNICKERBOCKER AVE, Brooklyn, NY 11237. It is classified as a elevator apartment - semi-fireproof. The building was constructed in 1998. It has 6 floors and 43 units. The building area is 61,650 square feet on a 13,287 sqft lot. The property is zoned R6. The assessed market value is $4.7M. Public records list the property as individually owned. There are 25 building permits on record (16 active). There are 247 violations on record (71 currently open). 14 docketed judgments carrying $25,657 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

746records on file
79Energy Star

Completed in 1998, 561 Knickerbocker Ave rises 6 stories over Kings. Public records put it at 43 units and 61,650 square feet of floor area, on land zoned R6. It is carried on the public rolls at a market value of $4.7M, and assessed for tax at $2.1M. In the 54 years its record reaches back, the lot has drawn 746 separate government filings.

The documentary life of the address leans hard toward complaint: 317 of its 746 records, fully 42%, fall under that one heading. Violation (247) and inspection (59) trail well behind. 71 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 2023.

On the environmental ledger, the building posts an Energy Star score of 79, with a site energy-use intensity of 63.8 kBtu per square foot. Its operations answer for roughly 275 metric tons of CO2-equivalent a year.

Read together — 42% complaint, 54 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$4.7M of Kings, written across 746 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

Address561 KNICKERBOCKER AVE, Brooklyn, NY 11237
Building TypeElevator Apartment - Semi-Fireproof
D1
Year Built1998
Floors6
Total Units43
Building Area61,650 sqft
Lot Size13,287 sqft
ZoningR6
ConditionAverage
3033350001
3346901
OwnershipIndividually owned

Assessment & Sales

$4.7M
$2.1M
$359K

Building Permits

25 on record · 16 active
ElevatorDOB NOW
SIGNED OFF
Filed Jan 17, 2020Job #B00289463-I1
View this permit's full record & inspection history →
Alteration — Type 2DOB Legacy
PERMIT ISSUED - ENTIRE JOB/WORK
Filed Sep 4, 2019Est. cost $1.3MJob #340693459-01

SOLAR

View this permit's full record & inspection history →
Construction EquipmentDOB Legacy
ISSUED
Filed Sep 4, 2019Job #340693459-01-01

OT

View this permit's full record & inspection history →
Cats RegistrationOther
EXPIRED
Filed Mar 4, 2019Job #243179
View this permit's full record & inspection history →
Cats RegistrationOther
EXPIRED
Filed Nov 5, 2018Job #247740
View this permit's full record & inspection history →

+ 20 more permits — view full report

Violations

247 on record · 71 open
Open judgment balance — docketed OATH judgments$25,657
Judgments · 14 docketed
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Feb 28, 2026Balance $1,562Ticket #039157632R
FAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEM
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Nov 30, 2024Balance $2,000Ticket #014125416Z
INSPECTION AND TESTING
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Dec 31, 2024Balance $125Ticket #048430363Z
ILLEGAL POSTING OF HANDBILL NOTICE
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Dec 31, 2024Balance $125Ticket #048430364K
ILLEGAL POSTING OF HANDBILL NOTICE
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Dec 31, 2024Balance $125Ticket #048430365M
ILLEGAL POSTING OF HANDBILL NOTICE

+ 9 more docketed judgments — view full report

HPDClass B
NOV SENT OUT
Issued Sep 9, 2026#19204085

§ 27-2026, 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK AT CEILING IN THE BATHROOM LOCATED AT APT 2F, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST

View this violation's full details & status history →
HPDClass C
NOTICE OF ISSUANCE SENT TO TENANT
Issued Sep 9, 2026#19204086

HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 2F, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Sep 9, 2026#19204087

§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR THE CEILING IN THE BATHROOM LOCATED AT APT 2F, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST

View this violation's full details & status history →
HPDClass A
NOV SENT OUT
Issued Sep 9, 2026#19204088

§27-2104(B) HMC POST A PROPER NOTICE REGARDING RENT STABILIZATION LAW, IN A FORM APPROVED BY THE COMMISSIONER, IN A CONSPICUOUS LOCATION WITHIN THE COMMON AREA AT THE BUILDINGS ENTRANCE. FOR MORE INFORMATION ABOUT SIGNAGE REQUIREMENTS, PLEASE VISIT: HTTPS://WWW.NYC.GOV/SITE/HPD/SERVICES-AND-INFORMATION/REQUIRED-SIGNAGE.PAGE

View this violation's full details & status history →
SafetyGas Piping Ll152
ACTIVE
Issued Oct 31, 2025#NOD-FTF-PL-PER-202212-0140578

Cycle 1, Sub-cycle C (premises is in Community District 4)

View this violation's full details & status history →

+ 242 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 561 KNICKERBOCKER AVE, Brooklyn built?

The building at 561 KNICKERBOCKER AVE, Brooklyn, NY 11237 was constructed in 1998. It is classified as a elevator apartment - semi-fireproof with 6 floors and 43 units. The building area is 61,650 sqft.

Are there building permits at 561 KNICKERBOCKER AVE, Brooklyn?

Yes. 561 KNICKERBOCKER AVE, Brooklyn, NY 11237 has 25 building permits on record, with 16 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Elevator (SIGNED OFF) filed Jan 17, 2020.

Does 561 KNICKERBOCKER AVE, Brooklyn have violations?

Yes. 561 KNICKERBOCKER AVE, Brooklyn, NY 11237 has 247 violations on record, with 71 currently open. Breakdown: 2 DOB Safety, 29 DOB, 9 ECB, 207 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 561 KNICKERBOCKER AVE, Brooklyn have docketed judgments?

Yes. 561 KNICKERBOCKER AVE, Brooklyn, NY 11237 has 14 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $25,657. 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 561 KNICKERBOCKER AVE?

561 KNICKERBOCKER AVE, Brooklyn, NY 11237 has an assessed market value of $4.7M and a total assessed value of $2.1M (land: $359K). Assessment data is from the NYC Department of Finance (DOF).

What is the zoning for 561 KNICKERBOCKER AVE?

561 KNICKERBOCKER AVE, Brooklyn, NY 11237 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 561 KNICKERBOCKER AVE?

561 KNICKERBOCKER AVE, Brooklyn, NY 11237 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 561 KNICKERBOCKER AVE?

Search 561 KNICKERBOCKER 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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561 KNICKERBOCKER AVE, Brooklyn, NY 11237 — Property Records, Permits, Violations, Tax & Zoning | RegWatch