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Building report

21 Adelphi Street

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

Built
1915
Units
8
Owner of record
21 ADELPHI LLC
Open HPD violations
11
HPD records on file
29

Violations at 21 Adelphi Street

29 on record
2026-05-01Class AOpen

(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 18855210
2025-06-06Class AOpen

(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 17965638
2024-12-07Class COpen

§ 27-2033 ADM CODE PROVIDE READY ACCESS TO BUILDINGS HEATING SYSTEM DOOR LOCKED AT CELLAR

HPD · 672 · Record 17547151
2024-12-07Class COpen

§ 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE DOOR AT VESTIBULE , 1st STORY

HPD · 530 · Record 17547145
2024-12-07Class BOpen

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

HPD · 508 · Record 17547139
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Who owns 21 Adelphi Street?

Owner of record: 21 ADELPHI 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 21 Adelphi Street

Recorded residential units: 8. Recorded year built: 1915. 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 21 Adelphi Street

The full report includes the grade, all 29 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 29 HPD violations
  3. 03Housing court filings and outcomes
  4. 04Ownership history and LLC connections