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Brooklyn • Elevator Apartment

2251 Knapp St

Brooklyn, NY 11229Individually ownedBBL 3088210010BIN 3321845
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Updated Aug 1, 2026 · 16 sources

Year Built1953
Floors6
Units162
Building Area174,580 sqft
ZoningR5
ClassD4
Market Value$16.9M

2251 KNAPP ST is a property located at 2251 KNAPP ST, Brooklyn, NY 11229. It is classified as a elevator apartment - cooperative. The building was constructed in 1953. It has 6 floors and 162 units. The building area is 174,580 square feet on a 84,200 sqft lot. The property is zoned R5. The assessed market value is $16.9M. Public records list the property as individually owned. There are 98 building permits on record (80 active). There are 141 violations on record (73 currently open). 8 docketed judgments carrying $3,580 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

465records on file
79Energy Star

Completed in 1953, 2251 Knapp St rises 6 stories over Kings. Public records put it at 162 units and 174,580 square feet of floor area, on land zoned R5. It is carried on the public rolls at a market value of $16.9M, and assessed for tax at $7.6M. In the 74 years its record reaches back, the lot has drawn 465 separate government filings.

The documentary life of the address leans hard toward violation: 141 of its 465 records, fully 30%, fall under that one heading. Complaint (116) and permit (98) trail well behind. 73 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 2020.

On the environmental ledger, the building posts an Energy Star score of 79, with a site energy-use intensity of 2.4 kBtu per square foot. Its operations answer for roughly 8 metric tons of CO2-equivalent a year.

Read together — 30% violation, 74 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$16.9M of Kings, written across 465 government filings.

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

Property Details

Address2251 KNAPP ST, Brooklyn, NY 11229
Building TypeElevator Apartment - Cooperative
D4
Year Built1953
Floors6
Total Units162
Building Area174,580 sqft
Lot Size84,200 sqft
ZoningR5
ConditionAverage
3088210010
3321845
OwnershipIndividually owned

Assessment & Sales

$16.9M
$7.6M
$689K

Building Permits

98 on record · 80 active
Cats Certificate To OperateOther
CURRENT
Filed Jun 18, 2026Job #485438
View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ISSUED
Filed Mar 26, 2026Est. cost $198KJob #B01145291-I1

Renewal Permit Without Changes

View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ISSUED
Filed Mar 26, 2026Est. cost $192KJob #B01145340-I1

Renewal Permit Without Changes

View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ENTIRE
Filed Mar 26, 2026Est. cost $192KJob #B01145340-I1
View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ENTIRE
Filed Mar 26, 2026Est. cost $198KJob #B01145291-I1
View this permit's full record & inspection history →

+ 93 more permits — view full report

Violations

141 on record · 73 open
Open judgment balance — docketed OATH judgments$3,580
Judgments · 8 docketed
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Feb 28, 2026Balance $1,250Ticket #037031388H
MISCELLANEOUS VIOLATIONS
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Feb 28, 2026Balance $1,250Ticket #037031389J
MISCELLANEOUS VIOLATIONS
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Apr 30, 2019Balance $1,080Ticket #038259762X
FAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEM
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Jul 31, 2009Ticket #041721921J
ABANDONING VEHICLE
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Apr 30, 2009Ticket #038191134R
FAIL MAINTAIN BLDG IN COMPLIANT MANNER: SERVICE EQUIPMENT

+ 3 more docketed judgments — view full report

HPDClass B
NOV SENT OUT
Issued Dec 20, 2023#16535944

§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WITH FIRE RETARDANT MATERIALS AT CEILING AT PUBLIC HALL, 6th STORY

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Dec 20, 2023#16535943

§ 27-2005 ADM CODE REPAIR THE ROOF SO THAT IT WILL NOT LEAK AT CEILING AT PUBLIC HALL, 6th STORY

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Dec 20, 2023#16535941

§ 27-2046.1 HMC: REPAIR OR REPLACE THE CARBON MONOXIDE DETECTING DEVICE(S). DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 6E, 6th STORY, 1st APARTMENT FROM SOUTH AT WEST

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Dec 20, 2023#16535942

§ 27-2045 ADM CODE REPAIR OR REPLACE THE SMOKE DETECTOR DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 6E, 6th STORY, 1st APARTMENT FROM SOUTH AT WEST

View this violation's full details & status history →
HPDClass A
NOV SENT OUT
Issued Dec 20, 2023#16535945

§ 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT AT CEILING AT PUBLIC HALL, 6th STORY

View this violation's full details & status history →

+ 136 more violations on record — view full report

Get the Complete Report for 2251 KNAPP ST

Title history, detailed tax records, environmental data, zoning analysis, and more from 250+ government sources.

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Frequently Asked Questions

When was 2251 KNAPP ST, Brooklyn built?

The building at 2251 KNAPP ST, Brooklyn, NY 11229 was constructed in 1953. It is classified as a elevator apartment - cooperative with 6 floors and 162 units. The building area is 174,580 sqft.

Are there building permits at 2251 KNAPP ST, Brooklyn?

Yes. 2251 KNAPP ST, Brooklyn, NY 11229 has 98 building permits on record, with 80 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Cats Certificate To Operate (CURRENT) filed Jun 18, 2026.

Does 2251 KNAPP ST, Brooklyn have violations?

Yes. 2251 KNAPP ST, Brooklyn, NY 11229 has 141 violations on record, with 73 currently open. Breakdown: 36 DOB, 19 ECB, 86 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 2251 KNAPP ST, Brooklyn have docketed judgments?

Yes. 2251 KNAPP ST, Brooklyn, NY 11229 has 8 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $3,580. 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 2251 KNAPP ST?

2251 KNAPP ST, Brooklyn, NY 11229 has an assessed market value of $16.9M and a total assessed value of $7.6M (land: $689K). Assessment data is from the NYC Department of Finance (DOF).

What is the zoning for 2251 KNAPP ST?

2251 KNAPP ST, Brooklyn, NY 11229 is zoned R5. 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 2251 KNAPP ST?

2251 KNAPP ST, Brooklyn, NY 11229 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 2251 KNAPP ST?

Search 2251 KNAPP ST 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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2251 KNAPP ST, Brooklyn, NY 11229 — Property Records, Permits, Violations, Tax & Zoning | RegWatch