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S

Sean Sinnreich

Site Manager·1 building·8 units
2.6

2 reviews

Highlights

No
Evictions
2
Litigation cases

About Sean Sinnreich

Sean Sinnreich is a mixed-profile site manager. Across their buildings, tenants rate them 2.6/5 across 2 reviews, with 0% recommending their buildings and 0% approving of them as an owner or associate. Their portfolio records 0 evictions, 6 open violations, and 2 litigation cases. Data last updated September 11, 2026. Across Flatbush in Brooklyn, Sean Sinnreich is a site manager associated with 1 building and 8 units. The portfolio is concentrated in Flatbush in Brooklyn. The building was constructed in 1910 and is classified as a mid-rise. None of the associated units have rent-stabilized apartments. Renters can review each building's ratings, reviews, and public records on its own page.

Renter recommendations

-%

Renters recommend associated buildings

-%

Renters approve of this owner or associate

Reviews

Former tenant·9 minutes ago

Not bad unless you have problems or need to contact the super / management

Pros

I love the location, people that live in the building are super friendly. The apartment is pretty spacious for New York and you’re close to the subway.

Cons

Worst management experience I’ve had in New York. Another resident stole a package and management did not respond for several weeks and after several attempts to contact. Although it’s an older building, management does absolutely nothing to keep it clean or maintain the building. They rarely clean the shared spaces and hallways (maybe once or twice every six months) and don’t schedule month pest control visits for residents. If you do put in a maintenance request, good luck the super also doesn’t respond. One maintenance request took around 4 months and several attempts to contact before it was fixed. On the other end, if you put in a maintenance request bc of a broken heater or pest control, something that requires another company it will be scheduled without management notifying you so hopefully you’re home whenever they decide to come!

Former tenant·Over 4 years ago

Ehhhh a pretty bad experience

Pros

New when I moved in...

Cons

I lived in the 1st fl/basement. I redid the backyard and made it beautiful, but the mosquitoes were bad. The basement flooded and a pipe burst causing everything I own to mold.

Buildings associated with SEAN SINNREICH

  • 271 Martense Street

    271 Martense Street

    2.6(2)

    Flatbush

271 Martense Street

271 Martense Street

2.6(2)

Flatbush

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 average0.75Violations per unit
NYC average0.81Violations per unit
1Class 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

5Class 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

FAQs

Sean Sinnreich has an average tenant rating of 2.6 out of 5 across 2 reviews.

Buildings managed by Sean Sinnreich average 0.75 open violations per unit, fewer than the citywide average of 0.81.

0% of tenants who reviewed buildings managed by Sean Sinnreich would recommend living there.

Sean Sinnreich has 2 housing court litigation cases across their portfolio.

Sean Sinnreich has not appeared on the NYC worst landlords list.

Sean Sinnreich has no recorded evictions across their portfolio.

Sean Sinnreich owns or manages 1 building totalling 8 units.

0% of tenants who reviewed a building managed by Sean Sinnreich approve of how it is run.

S

Sean Sinnreich

Site Manager·1 building·8 units
2.6

2 reviews

Follow us

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Apartments for rent in NYCRenting tips and resourcesVerified apartment listings in NYCBuildings and owners in NYCOwners in NYCNYC market analysis reports

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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

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Legal

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© 2026 Openigloo Inc. All rights reserved.