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B

Brendan O'sullivan

Owner·13 buildings·61 units
3.9

3 reviews

Highlights

No
Evictions
No
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 for buildings managed by Brendan O'Sullivan indicates generally responsive management, with timely repairs and effective pest control. Residents appreciate clean common areas and well-organized garbage disposal. However, heating issues are recurrent, and some express concerns over noise from neighbors and occasional conflicts regarding tenancy. Outdoor spaces have been altered, affecting tenant satisfaction, yet safety and community feel are positives. While some renters hesitate to recommend due to past disputes or maintenance delays, the overall impression is of a landlord attentive to tenant needs but with room for infrastructure upgrades and improved communication to enhance living conditions.

Reviews

Former tenant·Over 1 year ago

it was a crack home

Pros

quick to fix things

Cons

Almost evicted me

Former tenant·Over 1 year ago

It was just okay

Pros

I used to love the backyard until it was torn down

Cons

Backyard torn down, heat never worked.

Buildings associated with BRENDAN O'SULLIVAN

  • 6131 Garage Spencer Avenue

    6131 Garage Spencer Avenue

    Riverdale

  • 6063 Broadway

    6063 Broadway

    Fieldston

  • 3621B Greystone Avenue

    3621B Greystone Avenue

    Riverdale

  • 3621A Greystone Avenue

    3621A Greystone Avenue

    Riverdale

6131 Garage Spencer Avenue

6131 Garage Spencer Avenue

Riverdale

6063 Broadway

6063 Broadway

Fieldston

3621B Greystone Avenue

3621B Greystone Avenue

Riverdale

3621A Greystone Avenue

3621A Greystone Avenue

Riverdale

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 averageLess than 0.01Violations per unit
NYC average0.81Violations per unit
0Class C
Immediately hazardous

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

0Class B
Hazardous

Smoke detector issues, inadequate lighting, no lighting for stairways

0Class 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

B

Brendan O'sullivan

Owner·13 buildings·61 units
3.9

3 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.