506 Amsterdam Avenue

Manhattan, NY

BBL 1-01232-0033BIN 1033111

Concern level3 of 4

High

013 open class-C HPD violations (immediately hazardous) — about 1 per 7 apartments
022 of those issued in the last 3 years
031 eviction 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 15 stabilized units with New York State for 2023 — of about 22 apartments.

2018 — 21 units registered2023 — 15

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

1900

Built

Floors

Residential units

Walk-up apartments

Type

The building

This building and the landlord's others

This building33 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 HAZARDOUSApt 4AIssued 2024-04-01

§ 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF KEY OPERATED LOCK AT DOOR LEADING TO FIRE ESCAPE WINDOW IN THE 5th ROOM FROM EAST LOCATED AT APT 4A, 4th STORY, 2nd APARTMENT FROM SOUTH AT WEST

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

CLASS C · IMMEDIATELY HAZARDOUSApt 1AIssued 2024-04-01

§ 27-2043.1 HMC INSTALL THE MISSING OR REPAIR/REPLACE THE DEFECTIVE WINDOW GUARD(S) IN ACCORDANCE WITH THE SPECIFICATIONS OF THE NEW YORK CITY HEALTH CODE SECTION 24 RCNY CHAPTER 12. WG TO INSTALL = 4; WG TO REPLACE = 0; WG TO REPAIR = 0; IN THE ENTIRE APARTMENT LOCATED AT APT 1A, 1st STORY, 2nd APARTMENT FROM SOUTH AT WEST

Status: Landlord hasn't certified a fix

CLASS C · IMMEDIATELY HAZARDOUSApt 5CIssued 2012-06-115+ YRS OLD

§ 27-2043.1 HMC INSTALL THE MISSING OR REPAIR/REPLACE THE DEFECTIVE WINDOW GUARD(S) IN ACCORDANCE WITH THE SPECIFICATIONS OF THE NEW YORK CITY HEALTH CODE SECTION 24 RCNY CHAPTER 12. WG TO INSTALL = 1; WG TO REPLACE = 0; WG TO REPAIR = 0; IN THE 1st ROOM FROM EAST AT SOUTH LOCATED AT APT 5C, 5th STORY, 2nd APARTMENT FROM NORTH AT EAST

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

CLASS B · HAZARDOUSApt 2BIssued 2024-11-13

§ 27-2045 ADM CODE REPAIR OR REPLACE THE SMOKE DETECTOR DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 2B, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST

Status: Landlord hasn't certified a fix

HPD housing-maintenance violations

311 complaints from tenants

All time

Last 12 months

Heat/Hot Water28

Plumbing5

Unsanitary Condition3

General1

Paint/Plaster1

Water Leak1

GeneralBell/Buzzer/Intercom2026-09-21 · closed

Heat/Hot WaterApartment Only2026-01-22 · closed

PlumbingWater Supply2026-01-20 · closed

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

Higher than averagevs. NYC apartment blocks

757

Noise reports · last 12 mo

≈ per month

% from neighbors

Unspecified215

Street/Sidewalk190

Residential151

Commercial120

Vehicle74

Helicopter7

311 noise complaints within about 1,000 ft (a few blocks) in the last year. Most reports here are about outdoor noise (mostly unspecified) — 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

Much higher than averagevs. NYC apartment blocks

554

NYPD reports · last 12 mo

≈ per month

Felony130

Misdemeanor294

Violation130

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 10 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

2025-01-22Apt 2Aresidential

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 2005-02-02

Tenant action

Housing court

Landlord and related buildings

Registered owner

NETTLESOME LLC

Head officer

MAGDALENA KOSZ

Managing agent

C/O AJ CLARKE RE CORP

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

109 EAST 73 STREETMANHATTAN 120 EAST 88 STREETMANHATTAN 122 EAST 88 STREETMANHATTAN 140 EAST 92 STREETMANHATTAN 1429 LEXINGTON AVENUEMANHATTAN

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 sale2005-06-16 · $3,256,829.37

Most recent mortgage2005-10-03 · $1,116,957.87

Mortgage2005-10-03$1,116,957.87

borrower NETTLESOME LLC · lender NORTH FORK BANK

Sale2005-06-16$3,256,829.37

JOSEPH PEPPIE REALTY CORP. → NETTLESOME LLC

Mortgage1999-07-27$1,466,484.24

borrower JOSEPH PEPPIE REALTYCORP. · lender NETTLESOME LLC.

Mortgage1997-10-08$345,134.23

borrower JOSEPH PEPPIE REALTYCORP. · lender NORTH FORK BANK

Mortgage1989-04-18$1,690,000

borrower JOSEPH PEPPIE RLTY CORP · lender EAST NEW YORK SAVINGS BK

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

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