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C

Cornerstone Mgmt Systems Inc.

Corporate Owner·96 buildings·1189 units
3.6

20 reviews

Highlights

6
Evictions
12
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 reviews for buildings managed by CORNERSTONE MGMT SYSTEMS INC. depict a mixed experience. Many appreciate the convenient locations, well-maintained common areas, and generally responsive management and staff, especially in cleaner, rent-stabilized properties. However, issues arise with communication delays, pest control, and inconsistent heating. Some buildings suffer from noise, outdated fixtures, and occasional garbage management problems. While several residents praise the neighborly atmosphere, others report unresponsive management and unresolved maintenance concerns. Prospective renters should expect solid basics but remain cautious about timely issue resolution and pest management depending on the building.

Reviews

Former tenant·5 minutes ago

Solid small building

Pros

Large living rooms and good neighbors. Quiet

Cons

Old finishings and no doorman

Former tenant·26 minutes ago

Overall Solid Place

Pros

Location, Space, Neighbors

Cons

Management takes a little bit to respond

Buildings associated with CORNERSTONE MGMT SYSTEMS INC.

  • 540 6 Ave

    540 6 Ave

    Chelsea

  • 302 West   14 Street

    302 West 14 Street

    West Village

  • 70 Remsen Street
    Good cause

    70 Remsen Street

    3.8(1)

    Brooklyn Heights

  • 148 East 24 Street

    148 East 24 Street

    4.6(1)

    Kips Bay

540 6 Ave

540 6 Ave

Chelsea

302 West   14 Street

302 West 14 Street

West Village

70 Remsen Street
Good cause

70 Remsen Street

3.8(1)

Brooklyn Heights

148 East 24 Street

148 East 24 Street

4.6(1)

Kips Bay

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 average0.06Violations per unit
NYC average0.81Violations per unit
12Class C
Immediately hazardous

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

21Class B
Hazardous

Smoke detector issues, inadequate lighting, no lighting for stairways

28Class A
Non-hazardous

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

18Class I
Missing info

Missing or non-compliant with administrative information orders or filings

C

Cornerstone Mgmt Systems Inc.

Corporate Owner·96 buildings·1189 units
3.6

20 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.

Available apartments associated with CORNERSTONE MGMT SYSTEMS INC.

    • 21 South William Street #5B, Manhattan, NY 10005 1
    Future
    Financial District·1 bed, 1 bath
    4.8(2)

    21 South William Street #5B

  • 21 South William Street #5B, Manhattan, NY 10005 1
Future
Financial District·1 bed, 1 bath
4.8(2)

21 South William Street #5B