12 Martense Street

Brooklyn, NY

BBL 3-05089-0012BIN 3116854

Concern level4 of 4

Severe

0116 open class-C HPD violations (immediately hazardous) across 20 apartments
024 of those issued in the last 3 years
032 open rent-impairing violation(s)
043 active DOB violation(s)
054 evictions executed in the last 3 years
061 DOB fine lost by default (unpaid)

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.

HPD enforcement

Previously in HPD's Alternative Enforcement Program (AEP Round 6), discharged 2013-07-12.

Rent regulation

Not on the rent-stabilized list

Not found in the DOF tax-bill records nor the 2024 DHCR registered building list. Absence isn't proof a unit is unregulated — buildings can be missing or newly deregulated.

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

1925

Built

Floors

Residential units

Walk-up apartments

Type

The building

This building and the landlord's others

This building4 others linked to the same owner

HPD housing-maintenance violations

Open now

381

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 2026-08-19

§ 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 LATCH SET IN THE ENTRANCE LOCATED AT APT 2B, 2nd STORY, 2nd APARTMENT FROM WEST AT NORTH , SECTION ''north''

Status: Notice issued, not yet certified

CLASS C · IMMEDIATELY HAZARDOUSIssued 2026-08-19

§ 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 LATCH SET AT VESTIBULE DOOR AT PUBLIC HALL, 1st STORY

Status: Notice issued, not yet certified

CLASS C · IMMEDIATELY HAZARDOUSApt 2BIssued 2026-08-19RENT-IMPAIRING

§ 27-2026 ADM CODE REMOVE ALL OBSTRUCTIONS AND REPAIR ALL DEFECTS IN WASTELINE AT WATER CLOSET IN THE BATHROOM LOCATED AT APT 2B, 2nd STORY, 2nd APARTMENT FROM WEST AT NORTH , SECTION ''north''

Status: Notice issued, not yet certified

CLASS C · IMMEDIATELY HAZARDOUSApt 2BIssued 2025-10-22

§ 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 2B, 2nd STORY, 2nd APARTMENT FROM WEST AT NORTH , SECTION AT NORTH

Status: Notice issued, not yet certified

HPD housing-maintenance violations

311 complaints from tenants

All time

Last 12 months

Plumbing13

Paint/Plaster11

Unsanitary Condition11

Door/Window11

Water Leak7

Flooring/Stairs5

Heat/Hot Water3

Electric3

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

1756

Noise reports · last 12 mo

146

≈ per month

% from neighbors

Residential1425

Street/Sidewalk192

Unspecified66

Commercial43

Vehicle30

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

Much higher than averagevs. NYC apartment blocks

521

NYPD reports · last 12 mo

≈ per month

Felony144

Misdemeanor282

Violation95

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

ACTIVE · C-CONSTRUCTION OTHER OPTIONAL2025-10-22

IN REAR YARD OF BUILDING EXP-3 RETAINING WALL IN STATE OF SEVERE DISREPAIR WITH LOOSE AND DISLODGED BRICKS AND LEANING TOWARDS PROPERTY.

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

VIOLATION ISSUED-FAILURE TO FILE 2021 EXTERNAL LOW PRESSURE INSPECTION

ACTIVE · LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED2023-06-20

VIOLATION ISSUED-FAILURE TO FILE 2018 EXTERNAL LOW PRESSURE INSPECTION

DOB building violations

Evictions

Executed, all time

Last 3 years

2026-05-21Apt 2Bresidential

2025-07-28Apt 4Dresidential

2025-04-28Apt 4Aresidential

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.

CLOSED

Heat Supplemental Cases

CLOSEDOpened 2011-11-29

Heat / hot water

CLOSEDOpened 2011-06-15

Access Warrant - Non-Lead

CLOSEDOpened 2011-01-11

Heat / hot water

Housing court

Landlord and related buildings

Registered owner

12 martense holdings llc

Head officer

MINDY ELLMAN

Managing agent

howard MANDEL

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

250 12 STREETBROOKLYN 545 CLASSON AVENUEBROOKLYN 547 CLASSON AVENUEBROOKLYN 967 HEGEMAN AVENUEBROOKLYN

Landlord and related buildings

Unpaid city fines

$12,500

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.

DEFAULTConstructionClass 12025-10-22$12,500 due

Unpaid city fines

Ownership & money

Recorded sales

Mortgages / refinances

Last recorded sale2014-01-28 · $2,775,000

Most recent mortgage2020-06-11 · $195,445.33

Mortgage2020-06-11$195,445.33

borrower 12 MARTENSE HOLDING LLC · lender COMMUNITY FEDERAL SAVINGS BANK

Mortgage2014-06-11$1,500,000

borrower 12 MARTENSE HOLDING LLC · lender SANTANDER BANK NA

Sale2014-01-28$2,775,000

12 MARTENSE FT LLC → 12 MARTENSE HOLDING LLC

Mortgage2013-04-12$1,200,000

borrower 12 MARTENSE FT LLC · lender SIGNATURE BANK

Sale2012-04-02no recorded price

12 MARTENSE ASSOCIATES LLC → 12 MARTENSE FT LLC

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