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D

Diamond Management

Corporate Owner·13 buildings·814 units
3.0

8 reviews

Highlights

37
Evictions
100
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 on DIAMOND MANAGEMENT properties reveals mixed experiences. While some buildings are praised for cleanliness, spacious apartments, and respectful neighbors, there are recurrent complaints about pest infestations, unresponsive management, and security issues, including package theft. Maintenance problems such as heating inefficiencies, frequent leaks, and unreliable appliance repairs are common, along with concerns over management's tendency to implement cheap fixes and delays in addressing significant repairs. Renters note occasional high noise levels and inconsistent water pressure. Despite some well-maintained lobbies and helpful supers, overall responsiveness and transparency in handling tenant concerns appear lacking, suggesting room for improvement in tenant communication and building upkeep.

Reviews

Former tenant·5 minutes ago

Management company grabbed my deposit money

Pros

The lobby is well maintained. The plants in the hallways of each stair adds color to the building. Flights of stairs are very short.

Cons

The elevator is haunted and will skip certain floors randomly. The stairs are very steep. The management company delayed 3 weeks over, then falsely accused us of damaging the hallway and elevator with no proof. They withheld our entire security deposit showing no evidence of the cost of the "damage".

Former tenant·5 minutes ago

Not the best

Pros

There’s an elevator in building and laundry in building.

Cons

Horrible pest problem and packages get stolen on a regular basis.

Buildings associated with DIAMOND MANAGEMENT

  • 4200 Avenue K
    Rent-stabilized

    4200 Avenue K

    2.4(1)

    East Flatbush

  • 755 Ocean Avenue
    Rent-stabilized

    755 Ocean Avenue

    1.5(1)

    Ditmas Park

  • 224 Highland Boulevard

    224 Highland Boulevard

    3.3(1)

    Cypress Hills

  • 40-35 West 190 Street
    Rent-stabilized

    40-35 West 190 Street

    University Heights

4200 Avenue K
Rent-stabilized

4200 Avenue K

2.4(1)

East Flatbush

755 Ocean Avenue
Rent-stabilized

755 Ocean Avenue

1.5(1)

Ditmas Park

224 Highland Boulevard

224 Highland Boulevard

3.3(1)

Cypress Hills

40-35 West 190 Street
Rent-stabilized

40-35 West 190 Street

University 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 average2.05Violations per unit
NYC average0.81Violations per unit
453Class C
Immediately hazardous

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

979Class B
Hazardous

Smoke detector issues, inadequate lighting, no lighting for stairways

235Class A
Non-hazardous

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

9Class I
Missing info

Missing or non-compliant with administrative information orders or filings

D

Diamond Management

Corporate Owner·13 buildings·814 units
3.0

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.