663 Classon Avenue

Brooklyn, NY

BBL 3-01142-0002BIN 3028009

Concern level3 of 4

High

011 open class-C HPD violation (immediately hazardous) — about 1 per 6 apartments
021 of those issued in the last 3 years
032 evictions executed in the last 3 years

How this is set: open hazardous violations measured against the building's size, then raised by strong distress signals — HPD's enforcement program, court harassment findings, recent evictions, unpaid DOB fines, open housing-court cases, and a sold tax lien. Neighborhood noise and crime are not part of it. It describes the public record, not the condition of any one apartment, and a quiet record is not proof of a good building.

Rent regulation

Likely rent-stabilized

The owner registered 6 stabilized units with New York State for 2022 — essentially all of the building's 6 apartments.

2018 — 6 units registered2022 — 6

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

1931

Built

Floors

Residential units

Mixed residential / commercial

Type

The building

This building and the landlord's others

This building49 others linked to the same owner

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 HAZARDOUSIssued 2026-06-22

§ 27-2005 ADM CODE REPLACE WITH NEW THE MISSING HYDRONIC BASEBOARD RADIATOR COVER AT PUBLIC HALL, 1st STORY

Status: Landlord hasn't certified a fix

CLASS B · HAZARDOUSIssued 2026-09-01

§ 27-2005 ADM CODE PROPERLY SECURE THE LOOSE METAL DOOR SADDLE AT VESTIBULE DOOR AT PUBLIC HALL, 1st STORY

Status: Notice issued, not yet certified

CLASS B · HAZARDOUSApt 3RIssued 2026-05-04

§ 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 3R, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST ORIGINAL VIOLATION 18540890 ISSUED 31-DEC-25 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE 27-2017.3a(3)(a) or (b).

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

CLASS A · NON-HAZARDOUSApt 3RIssued 2025-02-25

§ 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT ALL WALLS, CEILINGS, DOORS AND DOOR FRAMES IN THE ENTIRE APARTMENT LOCATED AT APT 3R, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST

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

HPD housing-maintenance violations

311 complaints from tenants

All time

Last 12 months

Heat/Hot Water12

Door/Window5

Unsanitary Condition3

Plumbing1

Appliance1

Water Leak1

Flooring/Stairs1

General1

Complaints record what a tenant reported, not a finding by the city. "Closed" often means the inspector could not gain access.

311 complaints from tenants

Neighborhood noise

Much higher than averagevs. NYC apartment blocks

1303

Noise reports · last 12 mo

109

≈ per month

% from neighbors

Residential395

Commercial275

Street/Sidewalk226

Unspecified192

Helicopter158

Vehicle57

311 noise complaints within about 1,000 ft (a few blocks) in the last year. Most reports here are about outdoor noise (mostly residential) — street life and traffic more than neighbors. 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

About averagevs. NYC apartment blocks

227

NYPD reports · last 12 mo

≈ per month

Felony74

Misdemeanor110

Violation43

NYPD complaints reported within about 1,000 ft (a few blocks) in the last year, by severity. This reflects what gets reported and where police are active as much as actual safety, and busier, denser, higher-foot-traffic blocks log more. Locations are approximate — the NYPD shifts each report to the nearest corner for privacy — so read this as rough context, not a safety score.

Neighborhood crime

Bedbug history

No bedbugs reported

The owner filed 7 annual bedbug reports and reported no infested units. Filing with zero infestations is the compliant, reassuring case.

Bedbug history

DOB building violations

Active

On record

Active, last 3 yrs

No active DOB violations.

DOB building violations

Evictions

Executed, all time

Last 3 years

2025-12-30—commercial

2025-01-14Apt 2Rresidential

2023-01-24Apt STORE 1commercial

Executed by a city marshal. An eviction can be lawful; a high or rising count is a displacement signal, not proof of wrongdoing.

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 2014-03-11

Heat / hot water

CLOSEDOpened 2012-12-11

Access Warrant - Non-Lead

Housing court

Landlord and related buildings

Registered owner

PROSPECT AFFORDABLE PACKAGE LLC

Head officer

MATTHEW KELLER

Managing agent

NIEUW AMSTERDAM PROPERTY MANAGEMENT

49 other buildings share this owner's registration contacts. Shared contacts suggest common control, but they are not proof of ownership.

1020 PACIFIC STREETBROOKLYN 1063 PACIFIC STREETBROOKLYN 1091 ST NICHOLAS AVENUEMANHATTAN 120-08 FARMERS BOULEVARDQUEENS 121-16 FARMERS BOULEVARDQUEENS

Landlord and related buildings

Unpaid city fines

$1,250

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.

ConstructionClass 22026-05-12$1,250 due

ConstructionClass 12023-07-17$5,000 penalty

ConstructionClass 22023-07-17$1,250 penalty

Unpaid city fines

Ownership & money

Recorded sales

Mortgages / refinances

Last recorded sale2021-06-24 · $22,072,796.22

Most recent mortgage2021-10-25 · $3,300,000

Ownership & money

City debt & tax-lien sale

Not on the city's tax-lien sale list (2019–2025). The owner has not fallen far enough behind on property tax or water charges to be flagged for a lien sale.

City debt & tax-lien sale