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523 Knickerbocker Avenue

Public records for this building, including violations, complaints, housing court cases and ownership details.

Built
1905
Units
8
Owner of record
523 ASSETS LLC
Open HPD violations
2
HPD records on file
137

Violations at 523 Knickerbocker Avenue

137 on record
2021-04-09Class ADismissed

(A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.

HPD · 1507 · Record 14195412
2018-12-07Class BOpen

§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR THE CEILING IN THE 2nd ROOM FROM EAST LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM WEST AT NORTH

HPD · 508 · Record 12797028
2018-12-07Class BClosed

§ 27-2037, 2038 HMC: PROVIDE A SAFE AND ADEQUATE SUPPLY OF ELECTRIC SERVICE TO THE FIXTURES AT CEILING IN THE 1st ROOM FROM EAST LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM WEST AT NORTH

HPD · 688 · Record 12797026
2018-12-07Class BClosed

§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR THE CEILING IN THE 1st ROOM FROM EAST LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM WEST AT NORTH

HPD · 508 · Record 12797024
2018-12-07Class BClosed

§ 27-2005 ADM CODE REPAIR THE ROOF SO THAT IT WILL NOT LEAK OVER CEILING IN THE 1st ROOM FROM EAST LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM WEST AT NORTH

HPD · 507 · Record 12797023
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Who owns 523 Knickerbocker Avenue?

Owner of record: 523 ASSETS LLC. An owner name can come from an earlier filing. Compare the latest HPD registration with the recorded deed before relying on it.

Apartments at 523 Knickerbocker Avenue

Recorded residential units: 8. Recorded year built: 1905. These building facts do not show current vacancies or when a particular apartment was renovated.

This tax lot appears in the RGB list based on 2024 building registrations, published as of November 2025. That is a building-level historical signal; it does not identify which apartments are stabilized today. Check the official rent-stabilized building lists.

Look up more about this building

See the full record for 523 Knickerbocker Avenue

The full report includes the grade, all 137 violations with dates and outcomes, housing court filings and ownership details.

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Included
  1. 01Overall grade and scores by category
  2. 02Details for all 137 HPD violations
  3. 03Housing court filings and outcomes
  4. 04Ownership history and LLC connections