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21 Monitor Street

Brooklyn · East Williamsburg, NY 11222

21 Monitor Street is a 15-apartment building in East Williamsburg, built in 1920, managed by Seventeen Monitor LLC. The City has no open housing-code violations on file for it (HPD, as of 5 October 2026). Tenants filed 2 complaints with 311 in the past year, which the City closed in a median of 106 days (311, as of 5 October 2026). No tenant has reviewed it here yet. Everything above comes from the City's own records.

Managed by Seventeen Monitor LLC

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Units
15
Year built
1920
Neighborhood
East Williamsburg
Borough
Brooklyn

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.

4.4/5Better than most nearbyScored from the records below against every building we cover. It is not a tenant rating. Nobody who lived here said this.

2tenant complaints

Filed with 311 in the past year

Typically closed in 106 days · neighborhood median is 6

0open repairs

Outstanding with HPD

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

The company that manages it, elsewhere

Seventeen Monitor LLC manages 3 other buildings we cover, holding 18 apartments.

open violations
7open violations
311 complaints
20311 complaints

in the past year

per apartment
0.4per 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 28 September 2026.)

What tenants say

Nobody has written about 21 Monitor 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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Also on Monitor Street

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Also managed by Seventeen Monitor LLC

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