6309 23 Avenue

Brooklyn, NY

BBL 3-06558-0001BIN 3172428

Concern level2 of 4

Moderate

013 open class-C HPD violations (immediately hazardous) — about 1 per 21 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 64 stabilized units with New York State for 2023 — essentially all of the building's 64 apartments.

2018 — 64 units registered2023 — 64

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

Elevator apartments

Type

The building

This building and the landlord's others

This building47 others linked to the same owner

HPD housing-maintenance violations

Open now

137

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 8FIssued 2025-03-04

§ 27-2056.4 ADM CODE- CORRECT FAILURE TO NOTIFY OCCUPANTS AND/OR TO INVESTIGATE LEAD-BASED PAINT HAZARDS.

Status: Notice issued, not yet certified

CLASS C · IMMEDIATELY HAZARDOUSApt 8FIssued 2025-03-04

§ 27-2056.7 ADM CODE: CORRECT FAILURE TO PROVIDE TO THE DEPARTMENT WITHIN 45 DAYS OF DEMAND ALL RECORDS REQUIRED TO BE MAINTAINED BY OWNER PURSUANT TO LOCAL LAW 1 OF 2004 RELATED TO LEAD-BASED PAINT NOTICES, INSPECTIONS AND REMEDIATION/ABATEMENT ACTIVITIES.

Status: Notice issued, not yet certified

CLASS C · IMMEDIATELY HAZARDOUSIssued 2019-10-295+ YRS OLD

HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES AT COMPACTOR CLOSET, 2nd STORY, SECTION AT SOUTH

Status: Landlord hasn't certified a fix

CLASS B · HAZARDOUSApt 9BIssued 2025-03-31

§ 27-2056.7, 27-2056.17 AND 27-2056.8 ADM CODE - CERTIFY COMPLIANCE WITH LEAD-BASED PAINT HAZARD CONTROL REQUIREMENTS DURING PERIOD OF UNIT VACANCY BY SUBMITTING REQUIRED SUPPORTING DOCUMENTATION AND AFFIDAVITS FOR APARTMENT LOCATED AT APT 9B, 2nd STORY, 2nd APARTMENT FROM EAST AT SOUTH

Status: Notice issued, not yet certified

HPD housing-maintenance violations

311 complaints from tenants

All time

Last 12 months

Paint/Plaster6

Safety4

Unsanitary Condition4

Heat/Hot Water4

Plumbing4

Water Leak2

Electric2

Door/Window2

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

About averagevs. NYC apartment blocks

234

Noise reports · last 12 mo

≈ per month

% from neighbors

Residential125

Vehicle41

Unspecified33

Street/Sidewalk26

Commercial8

Helicopter1

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

Lower than averagevs. NYC apartment blocks

141

NYPD reports · last 12 mo

≈ per month

Felony43

Misdemeanor73

Violation25

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

Infested, latest filing

Annual filings

2024–20250 infested · 0 eradicated

2023–20240 infested · 0 eradicated

2022–20230 infested · 0 eradicated

Self-reported by the owner for the year ending each filing. Counts are building-wide and do not say which apartment was affected.

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

2024-06-28Apt 9Eresidential

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

No HPD housing-court cases on record for this building.

Housing court

Landlord and related buildings

Registered owner

23RD REALTY, LLC

Head officer

PETER REBENWURZEL

Managing agent

23RD REALTY, LLC

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

1035 CLARKSON AVENUEBROOKLYN 1077 NEW YORK AVENUEBROOKLYN 1114 NEW YORK AVENUEBROOKLYN 1115 WILLMOHR STREETBROOKLYN 1124 WINTHROP STREETBROOKLYN

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 sale1995-06-27 · no recorded price

Most recent mortgage2018-11-07 · $2,230,025.91

Mortgage2018-11-07$2,230,025.91

borrower 23RD REALTY, LLC · lender SIGNATURE BANK

Mortgage2013-10-02$2,344,490.7

borrower 23RD REALTY, LLC · lender NEW YORK COMMUNITY BANK

Mortgage2006-12-18$1,591,149.18

borrower 23RD REALTY, LLC · lender SOVEREIGN BANK

Mortgage2002-11-06$751,134.69

borrower 23RD REALTY LLC · lender INDEPENDENCE COMMUNITY BANK

Mortgage2000-03-17$980,413.31

borrower 23RD REALTY LLC · lender INDEPENDENCE COMMUNITY BANK

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