Openigloo home
Openigloo home

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.
W

William Demos

Corporate Owner·16 buildings·323 units
3.7

28 reviews

Highlights

19
Evictions
16
Litigation cases

Renter recommendations

-%

Renters recommend associated buildings

-%

Renters approve of this owner or associate

Building photos

Review summary

Summarized from anonymous rental reviews on Openigloo.

Recent tenant reviews of buildings managed by William Demos reveal mixed management experiences. Many tenants praise responsive supers like Pedro and appreciate building locations, quiet neighbors, and amenities like elevators and laundry. However, persistent issues with pest infestations, especially cockroaches, frequently surface, with some residents noting inadequate management response. Communication from ownership is often described as slow or unresponsive, particularly regarding maintenance and safety concerns. Safety and cleanliness vary by building, with some tenants reporting package theft, noise problems, and elevator or heating system malfunctions. While some properties have improved under current management, consistent pest control and more timely maintenance remain critical areas for improvement.

Reviews

Former tenant·9 minutes ago

Overall, amazing actually

Pros

- Pedro our super. He's wonderful, feels like family. He is so helpful and on top of everything. Also he is kind and has amazing energy-we are truly lucky to have him. - location wow - elevator and laundry - cute apartments. exposed brick, strong bones - we rarely hear any neighbors.

Cons

The only thing I would say is there are pests (just cockroaches but still) in the warmer months, it is somewhat manageable but also gross unfortunately. The funny thing is, the pros still outweigh the cons.

Former tenant·3 weeks ago

Good location and responses

Pros

Building management does respond and do their best to fix things quickly it seems like sometimes they get stopped though. The apartments are huge and the location is great close to subways and in a populated area.

Cons

Nothing it’s good

Advice to the owners

Please use a soap and not water when mopping the hallway it ends up smelling like just dirty water

Buildings associated with WILLIAM DEMOS

  • 9 Cornelia Street
    Good cause

    9 Cornelia Street

    West Village

  • 6123 5 Avenue
    Rent-stabilized

    6123 5 Avenue

    Sunset Park

  • 507 62 Street
    Good cause

    507 62 Street

    Sunset Park

  • 41-39 Elbertson Street
    Rent-stabilized

    41-39 Elbertson Street

    Elmhurst

9 Cornelia Street
Good cause

9 Cornelia Street

West Village

6123 5 Avenue
Rent-stabilized

6123 5 Avenue

Sunset Park

507 62 Street
Good cause

507 62 Street

Sunset Park

41-39 Elbertson Street
Rent-stabilized

41-39 Elbertson Street

Elmhurst

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 average0.28Violations per unit
NYC average0.81Violations per unit
27Class C
Immediately hazardous

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

45Class 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

6Class I
Missing info

Missing or non-compliant with administrative information orders or filings

W

William Demos

Corporate Owner·16 buildings·323 units
3.7

28 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.