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K

Kosha Diaz

Agent·1 building·12 units
3.0

3 reviews

Highlights

No
Evictions
6
Litigation cases

About Kosha Diaz

Kosha Diaz is a poorly regarded agent. Across their buildings, tenants rate them 3.0/5 across 3 reviews, with 0% recommending their buildings and 34% approving of them as an owner or associate. Their portfolio records 0 evictions, 35 open violations, and 6 litigation cases. Data last updated August 18, 2026. Kosha Diaz is an agent associated with 1 building and 12 units across the All Upper West Side in Manhattan. The portfolio is concentrated in the All Upper West Side in Manhattan. The building was constructed in 1892 and is a mid-rise. All of the associated building has rent-stabilized apartments. Individual building ratings, tenant reviews, and public records are on the associated building pages.

Renter recommendations

-%

Renters recommend associated buildings

-%

Renters approve of this owner or associate

Reviews

Former tenant·10 minutes ago

Avoid living in this nightmare building

Pros

Accesible transportation, centric and beautiful area.

Cons

Rat-infested, management had an attitude, no heating, an old kitchen, the moldings were collapsing, so was the staircase to the actual building and the manager and his workers sexually harassed women. Not even mentioning the fact, that the real estate agent was rude and condescending.

Advice to the owners

Don't be a slum lord

Former tenant·Over 3 years ago

Good location poor management

Pros

A good location, nice layout and light in one bedroom

Cons

Unresponsive management and super, dealt with multiple bed bug issues. Unit was not properly heated and the problem was never resolved. As low as 53 degrees at night as there was only one heater in a back bedroom for a 2 bedroom apartment.

Buildings associated with KOSHA DIAZ

  • 229 Columbus Avenue
    Rent-stabilized

    229 Columbus Avenue

    3.0(3)

    All Upper West Side

229 Columbus Avenue
Rent-stabilized

229 Columbus Avenue

3.0(3)

All 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 worse than the city average.

Owner average2.91Violations per unit
NYC average0.81Violations per unit
3Class C
Immediately hazardous

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

18Class B
Hazardous

Smoke detector issues, inadequate lighting, no lighting for stairways

14Class 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

Kosha Diaz has an average tenant rating of 3.0 out of 5 across 3 reviews.

Buildings managed by Kosha Diaz average 2.91 open violations per unit, more than the citywide average of 0.81.

0% of tenants who reviewed buildings managed by Kosha Diaz would recommend living there.

Kosha Diaz owns or manages 1 building totalling 12 units.

Kosha Diaz has no recorded evictions across their portfolio.

Kosha Diaz has not appeared on the NYC worst landlords list.

34% of tenants who reviewed a building managed by Kosha Diaz approve of how it is run.

K

Kosha Diaz

Agent·1 building·12 units
3.0

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

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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

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Legal

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© 2026 Openigloo Inc. All rights reserved.