NYC Building Records · BBL 1007190033
411 WEST 21 STREET
Manhattan · Block 719 · Lot 33 · Walk-up apartment (Class C6)
Owner of record
CHELSEA SQUARE NORTH INC
HPD-registered head officer: RALPH WESTERHOFF
HPD registered contacts
People legally accountable to HPD for conditions at this building, in registration-priority order:
- Head OfficerRALPH WESTERHOFF
- Corporate OwnerCHELSEA SQUARE NORTH INC
- Managing AgentBRICKWORK MANAGEMENT INC.
- Site ManagerFREDDIE ATTARD
Most recent deed
No recent ACRIS deed on record.
🔒 See full deed history for this building →Building stats
Units
5
Year built
1853
Class
C6
Borough
Manhattan
- Zoning:
- R7B
- Lot size:
- 1,980 sqft
- Building area:
- 6,160 sqft
- Floors:
- 5
- Assessed value:
- $1.6M
- Community district:
- 104
- Council district:
- 3
HPD violations
0 open
Most severe class on record: Class A
No open violations on record. Source: NYC HPD.
🔒 See full violation history →Recent HPD violation details
Most recent 5 violations issued by NYC HPD at this address:
- Class AInspected Jun 4, 2025(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 HPD…
- Class AInspected Apr 1, 2024(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 HPD…
- Class IInspected Nov 15, 2023§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE…
- Class AInspected Mar 15, 2023(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 HPD…
- Class IInspected Nov 2, 2022§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE…
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