821 Riverside Drive

Manhattan, NY

BBL 1-02135-0004BIN 1063285

Concern level3 of 4

High

012 open class-C HPD violations (immediately hazardous) — about 1 per 3 apartments
021 of those issued in the last 3 years
0317 active DOB violation(s)

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

On the NYC DHCR 2024 registered rent-stabilized building list. This official list records the building, not a per-year unit count.

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 building1 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 2BIssued 2024-01-08

§ 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF SPRINKLER HEAD PAINTED IN THE KITCHEN LOCATED AT APT 2B, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH

Status: Notice issued, not yet certified

CLASS C · IMMEDIATELY HAZARDOUSIssued 2008-06-185+ YRS OLD

D26-17.10 ADM CODE POST NOTICE, IN FORM APPROVED BY THE DEPARTMENT, STATING THE NAME AND LOCATION OF THE PERSON DESIGNATED BY THE OWNER TO HAVE KEY TO BUILDING'S HEATING SYSTEM AT OR NEAR MAILBOXES 1ST STY PUBLIC HALL.

Status: Landlord hasn't certified a fix

CLASS A · NON-HAZARDOUSIssued 2026-04-29

(A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.

Status: Notice issued, not yet certified

CLASS A · NON-HAZARDOUSIssued 2025-06-04

(A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.

Status: Notice issued, not yet certified

HPD housing-maintenance violations

311 complaints from tenants

All time

Last 12 months

Door/Window4

Electric1

General1

Paint/Plaster1

Unsanitary Condition1

Water Leak1

Water LeakHeavy Flow2023-02-08 · closed

Door/WindowWindow Frame2022-10-09 · closed

Unsanitary ConditionPests2022-10-09 · 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

Much higher than averagevs. NYC apartment blocks

1915

Noise reports · last 12 mo

160

≈ per month

% from neighbors

Street/Sidewalk1200

Residential439

Commercial95

Unspecified91

Vehicle85

House of Worship4

Park1

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

Higher than averagevs. NYC apartment blocks

341

NYPD reports · last 12 mo

≈ per month

Felony132

Misdemeanor159

Violation50

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 annual bedbug report on file. Owners of buildings with three or more apartments must file one each year — its absence can mean a smaller building, or an owner that has not filed.

Bedbug history

DOB building violations

Active

On record

Active, last 3 yrs

ACTIVE · LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED2025-11-14

VIOLATION ISSUED-FAILURE TO FILE 2024 EXTERNAL LOW PRESSURE INSPECTION

ACTIVE · LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED2024-09-23

VIOLATION ISSUED-FAILURE TO FILE 2023 EXTERNAL LOW PRESSURE INSPECTION

ACTIVE · LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED2023-06-30

VIOLATION ISSUED-FAILURE TO FILE 2021 EXTERNAL LOW PRESSURE INSPECTION

DOB building violations

Evictions

No executed evictions on record for this building.

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 2022-10-24

Tenant action

Housing court

Landlord and related buildings

Registered owner

ELEXIDA CASTRO

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

817 RIVERSIDE DRIVEMANHATTAN

Landlord and related buildings

Unpaid city fines

$625

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.

BoilersClass 22024-12-16$625 due

Unpaid city fines

Ownership & money

Recorded sales

Mortgages / refinances

Last recorded sale2016-01-29 · no recorded price

Most recent mortgage2023-10-05 · $1,020,000

Mortgage2023-10-05$1,020,000

borrower CASTRO, ELEXIDA J · lender MERS

Sale2016-01-29no recorded price

JOHN GRANT IRVING, ESTATE OF JOHN G. IRVING, STEPHEN P. LONG, EXECUTOR → CASTRO, ELEXIDA J

Mortgage2010-05-06$15,000

borrower IRVING, JOHN · lender NHS OF NEW YORK CITY

Sale1981-03-20no recorded price

IRVING, WARREN LLOYD → IRVING, JOHN GRANT AKA, IRVING, JOHN G

Sale1981-03-20no recorded price

IRVING, VERA MAE → IRVING, JOHN G, IRVING, JOHN GRANT AKA

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