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170 East 90th Street

Manhattan · Upper East Side-Carnegie Hill, NY 10128

170 East 90th Street is a 10-apartment building in Upper East Side-Carnegie Hill, built in 1920, managed by Synoptic Management CORP. The City has 7 open housing-code violations on file for it, 3 of them immediately hazardous, about 0.70 per apartment, in a neighborhood where most buildings have none on record (HPD, as of 5 October 2026). No tenant has reviewed it here yet. Everything above comes from the City's own records.

Managed by Synoptic Management CORP

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Units
10
Year built
1920
Borough
Manhattan

This building’s record with the City

Complaints tenants filed with 311, and repairs a City inspector has asked for. Most repairs are routine maintenance. Both describe the building rather than the people in it, and often predate the current management.

2.8/5About average for the areaScored from the records below against every building we cover. It is not a tenant rating. Nobody who lived here said this.

0tenant complaints

Filed with 311 in the past year

7open repairs

Outstanding with HPD · about 0.7 per apartment

Immediately hazardous
3
Hazardous
0
Non-hazardous
4

What the open repairs are about

  • Heat or hot water2
  • Doors, windows and locks2
  • Stairs, floors and ceilings2
  • Leaks, damp or mould1

Source: NYC 311 and Housing Preservation & Development. Look this building up · updated Oct 2026

The company that manages it, elsewhere

Synoptic Management CORP manages 75 other buildings we cover, holding 1,389 apartments.

open violations
444open violations
immediately hazardous
54immediately hazardous
311 complaints
43311 complaints

in the past year

per apartment
0.3per apartment

The company’s record across its other buildings, not this building’s. A company can run one well and another badly, and these figures often predate the current management. (HPD and 311, as of 5 October 2026.)

What tenants say

Nobody has written about 170 East 90th Street yet.

Does the heat hold in January? How long does the super take? Does management answer the phone, and were you charged what you expected? No public record answers any of that. Only someone who lived here can.

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