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M

Mordechai Koslowitz

Head Officer·23 buildings·239 units
3.1

27 reviews

Highlights

1
Evictions
6
Litigation cases

Renter recommendations

-%

Renters recommend associated buildings

-%

Renters approve of this owner or associate

Review summary

Summarized from anonymous rental reviews on Openigloo.

Tenant feedback for Mordechai Koslowitz-managed buildings reveals a pattern of unreliable management and maintenance issues. Many report persistent pest infestations, especially mice and roaches, along with inadequate garbage management and cleanliness. Heating and plumbing problems are common, with delays in repairs frustrating tenants. Several reviews mention unresponsive or dismissive landlord behavior, poor communication, and unsafe, deteriorating building conditions. However, some buildings have responsive superintendents and friendly neighbors, providing a sense of community. Tenants advise improved attentiveness to maintenance requests, better pest control, hiring competent staff, and more respectful management to enhance living conditions and relationship with residents.

Reviews

Former tenant·4 months ago

Unresponsive Management and Too Expensive for Area

Pros

Great neighbors, everyone knows each other and regularly hangs out. The people living there are very accommodating and helpful. Quiet building for the most part, but there is no type of insulation for noise, thankfully neighbors are respectful. Spacious bedrooms if you live in the rear apartments. Open concept if you live in the front apartments.

Cons

Weird layout for rear apartments. If you live in the front apartments that face the boulevard, it is extremely loud at all hours of the day. Management is unresponsive and takes forever to fix issues. Will only address an issue if it is reported to 311, but then will target you if they find out you did it. Too expensive for the area and the lack of maintenance. Can't remember the last time the stairs/hallways were swept. The dryer and washer are disgusting and never cleaned. (There is only a singular washer and a singular dryer for entire building.) Rats and roaches in basement. Nasty trash smell from basement. Neighbors and I have seen mice and roaches in apartments (some more than others, depending on the apartment location.) Electric and gas meter reading issues (being overcharged by ConEd for improper wiring or setup on building's end).

Advice to the owners

Listen to your tenants and fix the issues that are being complained about. Hire a super that is good at their job, instead of hosting parties and giving tenants attitude when asking for a simple favor.

Former tenant·5 months ago

imagine issues being fixed

Pros

really good noise level, cute place, nice neighbors

Cons

management is a joke, mold and water damage in the apartment unit were never fixed despite multiple requests and documentation.

Buildings associated with MORDECHAI KOSLOWITZ

  • 122-21 Rear 111 Avenue

    122-21 Rear 111 Avenue

    South Richmond Hill

  • 109-52 123 Street

    109-52 123 Street

    South Richmond Hill

  • 101 Woodruff Avenue

    101 Woodruff Avenue

    3.5(3)

    Prospect Park South

  • 90 Wadsworth Avenue

    90 Wadsworth Avenue

    Washington Heights

122-21 Rear 111 Avenue

122-21 Rear 111 Avenue

South Richmond Hill

109-52 123 Street

109-52 123 Street

South Richmond Hill

101 Woodruff Avenue

101 Woodruff Avenue

3.5(3)

Prospect Park South

90 Wadsworth Avenue

90 Wadsworth Avenue

Washington Heights

Building ratings

Cleanliness

-

Trash management

-

Pest control

-

Water pressure

-

Heat

-

Neighbors

-

Noise levels

-

Owner responsiveness

-

Cleanliness

-

Trash management

-

Pest control

-

Water pressure

-

Heat

-

Neighbors

-

Noise levels

-

Owner responsiveness

-

Rents and deposits

-

Renters received their security deposits back

-

Electronic rent payments

Open violations

From past 10 years · Updated 5 days ago

Average violations per unit for this owner or associate is worse than the city average.

Owner average0.94Violations per unit
NYC average0.81Violations per unit
4Class C
Immediately hazardous

Rodents, pest, mold, inadequate heat or hot water, defective building parts

8Class B
Hazardous

Smoke detector issues, inadequate lighting, no lighting for stairways

4Class A
Non-hazardous

No peephole on a door, no street number on the building, unlawful keeping of animals

0Class I
Missing info

Missing or non-compliant with administrative information orders or filings

M

Mordechai Koslowitz

Head Officer·23 buildings·239 units
3.1

27 reviews

Follow us

For renters

Apartments for rent in NYCRenting tips and resourcesVerified apartment listings in NYCBuildings and owners in NYCBuildings in BostonNYC market analysis reports

For landlords

iglooIQListings quality policy

Trending neighborhoods

Apartments in AstoriaApartments in Bedford-StuyvesantApartments in BushwickApartments in ChelseaApartments in Financial DistrictApartments in SohoApartments in Upper East SideApartments in Upper West SideApartments in West VillageApartments in Williamsburg

NYC boroughs

Apartments in BronxApartments in BrooklynApartments in ManhattanApartments in QueensApartments in Staten Island

2-bedroom apartments

2-bedroom apartments in Bronx2-bedroom apartments in Brooklyn2-bedroom apartments in Manhattan2-bedroom apartments in Queens2-bedroom apartments in Staten Island

Support

FAQContact usLive support

Legal

Terms of usePrivacy policyCommunity guidelinesAgency disclosureFair housing disclosureStandard operating procedures
© 2026 Openigloo Inc. All rights reserved.