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M

Magdalena Kosz

Officer·1 building·60 units
4.5

3 reviews

Highlights

No
Evictions
No
Litigation cases

About Magdalena Kosz

Magdalena Kosz is a well-regarded and reliable officer. Across their buildings, tenants rate them 4.5/5 across 3 reviews, with 100% recommending their buildings and 100% approving of them as an owner or associate. Their portfolio records 0 evictions, 7 open violations, and 0 litigation cases. Data last updated August 20, 2026. Associated with 1 building and 60 units across Manhattan, Magdalena Kosz is an officer responsible for a portfolio concentrated in the Upper West Side. The portfolio spans construction eras, with its building having been built in the 1920s. The building is primarily mid-rise, and all of the associated units have rent-stabilized apartments. Prospective renters can find building-level ratings, reviews, and open-data records on the associated building pages.

Renter recommendations

-%

Renters recommend associated buildings

-%

Renters approve of this owner or associate

Review summary

Summarized from anonymous rental reviews on Openigloo.

Recent tenant reviews highlight that buildings managed by Magdalena Kosz are well-maintained and clean, with a friendly community. Tenants appreciate the cleanliness, garbage management, and owner responsiveness. However, some concerns include occasional heating issues, noisy neighbors, and the need for renovations in certain apartments. Suggestions for improvements include upgrading heating systems and renovating old floors. Overall, residents approve of the owner and recommend staying in the buildings for a comfortable and safe living experience despite minor drawbacks.

Reviews

Former tenant·6 minutes ago

Great building with a lovely community

Pros

The neighbors are generally really nice and people leave stuff to give away in the lobby which is sweet. There's a lot of space in the apartments and it's safe, quiet, and the building is kept clean. The super is really nice and helpful. Huge windows with lots of sunlight in every room. I have really enjoyed living here and will miss it when I have to move!

Cons

The hardwood floors are kind of old and need renovating. Sometimes the heat doesn't turn on when I need it. One neighbor smokes a lot and makes the whole building smell bad. :/

Advice to the owners

Get the floors redone and it'll make the apartments a lot nicer!

Former tenant·8 months ago

Good, no-frills building

Pros

Medium size, pre-war building that is well maintained and fairly close to the subway. Space between floors is thick and I rarely hear my upstairs neighbors

Cons

They can be a bit stingy with the heat, especially when outside hovers around the legal heating thresholds. Not great insulation and the windows are not energy efficient.

Advice to the owners

Please be a bit more generous with the heat

Buildings associated with MAGDALENA KOSZ

  • 309 West  109 Street
    Rent-stabilized

    309 West 109 Street

    4.5(3)

    Upper West Side

309 West  109 Street
Rent-stabilized

309 West 109 Street

4.5(3)

Upper West Side

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 better than the city average.

Owner average0.11Violations per unit
NYC average0.81Violations per unit
2Class C
Immediately hazardous

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

0Class B
Hazardous

Smoke detector issues, inadequate lighting, no lighting for stairways

5Class 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

FAQs

Magdalena Kosz has an average tenant rating of 4.5 out of 5 across 3 reviews.

Buildings managed by Magdalena Kosz average 0.11 open violations per unit, fewer than the citywide average of 0.81.

100% of tenants who reviewed buildings managed by Magdalena Kosz would recommend living there.

Magdalena Kosz has not appeared on the NYC worst landlords list.

Magdalena Kosz owns or manages 1 building totalling 60 units.

Magdalena Kosz has no housing court litigation cases across their portfolio.

Magdalena Kosz has no recorded evictions across their portfolio.

100% of tenants who reviewed a building managed by Magdalena Kosz approve of how it is run.

M

Magdalena Kosz

Officer·1 building·60 units
4.5

3 reviews

Follow us

For renters

Apartments for rent in NYCRenting tips and resourcesVerified apartment listings in NYCBuildings and owners in NYCOwners in NYCNYC 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.