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C

Cornerstone Management Systems Inc

Corporate Owner·16 buildings·184 units
3.8

8 reviews

Highlights

2
Evictions
6
Litigation cases

Renter recommendations

-%

Renters recommend associated buildings

-%

Renters approve of this owner or associate

Reviews

Former tenant·2 months ago

Great building + community

Pros

Liked that the building was always clean, lobby maintained, etc.

Cons

Maybe just a busy neighborhood?

Former tenant·Over 2 years ago

Old and loud

Pros

Rent stabilized… that’s it

Cons

Weird neighbors. The wood floors are extremely loud. You will be able to hear every movement in the unit above you. Walls are extremely thin. Pest problem.

Advice to the owners

Paint the inside of the apartment and upgrade the buzzer. Make sure tenants are compliant with the 80% carpet rule.

Buildings associated with CORNERSTONE MANAGEMENT SYSTEMS INC

  • 215 Rear East 59 Street
    Good cause

    215 Rear East 59 Street

    Lenox Hill

  • 601 West End Avenue

    601 West End Avenue

    Upper West Side

  • 32 Downing Street

    32 Downing Street

    West Village

  • 445 West 48 Street
    Rent-stabilized

    445 West 48 Street

    2.0(5)

    Hell's Kitchen

215 Rear East 59 Street
Good cause

215 Rear East 59 Street

Lenox Hill

601 West End Avenue

601 West End Avenue

Upper West Side

32 Downing Street

32 Downing Street

West Village

445 West 48 Street
Rent-stabilized

445 West 48 Street

2.0(5)

Hell's Kitchen

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 average0.04Violations per unit
NYC average0.81Violations per unit
1Class C
Immediately hazardous

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

6Class B
Hazardous

Smoke detector issues, inadequate lighting, no lighting for stairways

1Class 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

C

Cornerstone Management Systems Inc

Corporate Owner·16 buildings·184 units
3.8

8 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.