899 Knickerbocker Avenue

Brooklyn, NY

BBL 3-03437-0001BIN 3079802

Rent regulation

Likely rent-stabilized

The owner registered 12 stabilized units with New York State for 2023 — essentially all of the building's 12 apartments.

2018 — 12 units registered2023 — 12

J-51 tax benefit

Rent stabilization here may be tied to a tax benefit and can end when the benefit expires.

No public data says which specific apartment is stabilized.

Registration counts apply to the building, not to unit numbers. To confirm your own apartment, request your rent history from New York State Homes and Community Renewal — it is free and takes a few weeks.

How to request your rent history →

Rent regulation

The building

HPD housing-maintenance violations

Open now

On record

Open Class C

Open Class B

Open Class A

Class C is immediately hazardous, Class B is hazardous, Class A is non-hazardous. A violation stays open until HPD certifies the repair, so some open items may already be fixed.

CLASS C · IMMEDIATELY HAZARDOUSApt 2AIssued 2026-09-10

§ 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 2A, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH

Status: HPD couldn't get in to re-inspect

CLASS C · IMMEDIATELY HAZARDOUSIssued 2013-11-295+ YRS OLD

§ 27-2033 ADM CODE PROVIDE READY ACCESS TO BUILDINGS HEATING SYSTEM , DOOR LOCK AT CELLAR

Status: Landlord hasn't certified a fix

CLASS B · HAZARDOUSApt 2AIssued 2026-09-10

§ 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 MISSING IN THE ENTIRE APARTMENT LOCATED AT APT 2A, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH

Status: Civ14 Mailed

CLASS B · HAZARDOUSApt 2AIssued 2026-09-10

§ 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 2A, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH

Status: Civ14 Mailed

HPD housing-maintenance violations

311 complaints from tenants

Neighborhood noise

Higher than averagevs. NYC apartment blocks

726

Noise reports · last 12 mo

≈ per month

% from neighbors

Residential367

Commercial169

Street/Sidewalk136

Vehicle31

Unspecified23

311 noise complaints within about 1,000 ft (a few blocks) in the last year. Most reports here are about noise from inside buildings — neighbors, not the street. This counts how often people call 311, which tracks how densely populated and busy an area is as much as how loud it is — it is not a sound measurement.

Neighborhood noise

Neighborhood crime

Bedbug history

No bedbugs reported

The owner filed 8 annual bedbug reports and reported no infested units. Filing with zero infestations is the compliant, reassuring case.

Bedbug history

DOB building violations

Evictions

Housing court

Cases on record

Open now

Tenant-brought

Harassment found

With a judgment

Most cases are tenants taking the owner to court to force repairs. A case is not proof of wrongdoing; a harassment finding or judgment is a court ruling against the owner.

CLOSEDOpened 2014-01-21

Heat / hot water

CLOSEDOpened 2012-08-14

Tenant action

CLOSEDJUDGMENTOpened 2010-07-21

Comprehensive

Housing court

Landlord and related buildings

Unpaid city fines

Balance due (active)

Active violations

Lost by default

DOB violations adjudicated by OATH carry money penalties. "Lost by default" means the owner never appeared at the hearing. An unpaid balance is a stronger "ignoring the city" signal than a raw violation count.

Unpaid city fines

Ownership & money

Recorded sales

Mortgages / refinances

Last recorded sale2015-06-17 · $2,775,000

Most recent mortgage2015-06-17 · $804,951.6

Sale2015-06-17$2,775,000

KINYAN 257 COOPER LLC → SK 257 COOPER, LLC

Mortgage2015-06-17$804,951.6

borrower SK 257 COOPER, LLC · lender RIDGEWOOD SAVINGS BANK

Mortgage2013-03-11$1,250,000

borrower KINYAN 257 COOPER LLC · lender ASTORIA FEDERAL SAVINGS AND LOAN ASSOCIATION

Sale2011-03-31$800,000

257 COOPER STREET REALTY CORPORATION → KINYAN 257 COOPER LLC

Mortgage2010-03-30$1,563,600

borrower NEW PUNJAB REALTY CORP., 257 COOPER REALTY CORPORATION · lender MARIE HOLDINGS, INC.

From ACRIS recorded documents. Amounts are often $0 or nominal for transfers between related parties, and LLCs can obscure who is really involved — treat this as public-record context, not a valuation.

Ownership & money

City debt & tax-lien sale