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Three families
451 WEST 50 STREET
MANHATTAN · Hell's Kitchen · BIN 1026672
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1901Year Built
3Stories
C0Building Class
R8Zoning
4,240 sfGross Floor Area
3Units
Rent Stabilized22 Open Violations ▸
Three families · Owner of record: 451 W 50 ST LLC · 2,092 sf lot · 2.03 FAR built · Flood zone X
Locations of Work
ArchitectureMechanicalPlumbing
Roof1p · 1 filing · 12 docs
Floor 317p · 3 filings · 20 docs
Floor 219p · 3 filings · 20 docs
Floor 116p · 3 filings · 20 docs
Cellar19p · 3 filings · 20 docs
Basement2p · 1 filing · 12 docs
Sub-Basement14p · 2 filings · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
451 W 50 ST LLC303/22/2026
YANG INC HUA103/22/2026
451 W51 ST403/21/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
06/25/2020$3.0M—350 EAST 19TH LLC → 451 W 50 ST LLC$719/sf building
07/13/2015$3.5M—— → —$825/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
HRM ENGINEERING SERVICES, PC503/16/2023
ANGELO NG & ANTHONY NG ARCHITECTS S211/01/2022
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
ANGELO NG + ANTHONY NG ARCHITECTS803/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
WEN BIN CENElectrical303/21/2026
HUA YANG INCGeneral Contractor307/08/2026
TLS CONSTRUCTION GROUP I*General Contractor303/21/2026
QMB PLUMBING & HEATING INCPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
JUST CONSULTING ENGINEERI5865403/16/2023
Building Lifecycle
All (54)Filed (7)Permit Issued (4)Violation (26)Inspection (5)Special Inspection (12)
04/29/2026
Violation issued (HPD, open)
A
11/17/2025
Violation issued (HPD, open)
I
06/04/2025
Violation issued (HPD, open)
A
04/01/2024
Violation issued (HPD, open)
A
01/15/2024
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
11/15/2023
Violation issued (HPD, closed)
I
06/20/2023
Permit issued — Mechanical Systems
M00669680-I1-MS
06/06/2023
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
05/22/2023
Violation issued (ECB, closed)
Construction
03/17/2023
Special inspection requirement — Energy Code Compliance Inspections
XIAOJUN WANG
03/17/2023
Special inspection requirement — Final
CALVIN TRAN
03/17/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIAOJUN WANG
03/17/2023
Special inspection requirement — Energy Code Compliance Inspections
XIAOJUN WANG
03/17/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIAOJUN WANG
03/17/2023
Special inspection requirement — Mechanical Systems
XIAOJUN WANG
03/16/2023
Filed — Alteration
FILING MECHANICAL WORKTYPE IN CONJUNCTION WITH ALT 2 APPLICATION 140936361
M00669680-P1
03/16/2023
Filed — Alteration
FILING PLUMBING WORK TYPE IN CONJUNCTION WITH ALT2 APPLICATION 140936361
M00669682-P1
03/16/2023
Violation issued (HPD, open)
A
03/16/2023
Special inspection requirement — Energy Code Compliance Inspections
XIAOJUN WANG
03/16/2023
Special inspection requirement — Mechanical Systems
XIAOJUN WANG
03/16/2023
Special inspection requirement — Energy Code Compliance Inspections
XIAOJUN WANG
03/16/2023
Special inspection requirement — Final
CALVIN TRAN
03/16/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIAOJUN WANG
03/16/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIAOJUN WANG
02/24/2023
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
02/24/2023
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
02/24/2023
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
01/12/2023
Permit issued — Plumbing
M00669682-I1-PL
11/15/2022
Permit issued — Construction Fence
M08031117-I1-FN
11/02/2022
Violation issued (HPD, closed)
I
11/01/2022
Filed — Alteration
FILING TEMPORARY CONSTRUCTION FENCE IN CONJUNCTION WITH ALT 2 APPLICATION 140936361
M08031117-I1
06/15/2022
Filed — Alteration
M00749854-I1
04/12/2022
Filed — Alteration
FILING PLUMBING WORK TYPE IN CONJUNCTION WITH ALT2 APPLICATION 140936361
M00669682-I1
03/24/2022
Filed — Alteration
FILING MECHANICAL WORKTYPE IN CONJUNCTION WITH ALT 2 APPLICATION 140936361
M00669680-I1
02/16/2022
Violation issued (HPD, closed)
I
02/16/2022
Violation issued (HPD, open)
A
02/01/2022
Permit issued — General Construction
M00626538-I1-GC
12/28/2021
Filed — Alteration
M00626538-I1
04/01/2021
Violation issued (HPD, open)
A
05/17/1987
Violation issued (HPD, open)
A
05/17/1987
Violation issued (HPD, open)
A
05/17/1987
Violation issued (HPD, open)
B
05/17/1987
Violation issued (HPD, open)
A
05/17/1987
Violation issued (HPD, open)
A
05/17/1987
Violation issued (HPD, open)
B
05/17/1987
Violation issued (HPD, open)
A
05/17/1987
Violation issued (HPD, open)
B
05/17/1987
Violation issued (HPD, open)
A
05/17/1987
Violation issued (HPD, open)
A
05/17/1987
Violation issued (HPD, open)
A
05/17/1987
Violation issued (HPD, open)
A
05/17/1987
Violation issued (HPD, open)
B
05/17/1987
Violation issued (HPD, open)
A
05/17/1987
Violation issued (HPD, open)
A
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWMechanical SystemsPermit IssuedTLS CONSTRUCTION GROUP I*06/20/2023
DOB NOWPlumbingSigned-offQMB PLUMBING & HEATING INC01/12/2023
DOB NOWConstruction FencePermit IssuedHUA YANG INC11/15/2022
DOB NOWGeneral ConstructionPermit IssuedHUA YANG INC02/01/2022
BISOTISSUEDHUA YANG INC11/18/2022
1 project · most recent 06/22/2023
General Wiring
FiledStatusContractorScope
06/22/2023CompleteR & T ELECTRICAL CORPGeneral Wiring
1 project · most recent 11/01/2022
Fence
FiledStatusContractorScope
11/01/2022Permit IssuedHUA YANG INCFence
▾Field Inspections (DOB CAP) — 5
DateTypeResultReport
01/15/2024Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
06/06/2023Pass-Final PL - Up to 3 Requested FloorsPassView ↗
02/24/2023Certified Gas-Gas-Piping-RoughingCertifiedView ↗
02/24/2023Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
02/24/2023Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 12
DateRequirementInspectorRole
03/17/2023Energy Code Compliance InspectionsXIAOJUN WANGprogress
03/17/2023FinalCALVIN TRANprogress
03/17/2023Fire-Resistant Penetrations and JointsXIAOJUN WANGspecial
03/17/2023Energy Code Compliance InspectionsXIAOJUN WANGprogress
03/17/2023Fire-Resistant Penetrations and JointsXIAOJUN WANGspecial
03/17/2023Mechanical SystemsXIAOJUN WANGspecial
03/16/2023Energy Code Compliance InspectionsXIAOJUN WANGprogress
03/16/2023Mechanical SystemsXIAOJUN WANGspecial
03/16/2023Energy Code Compliance InspectionsXIAOJUN WANGprogress
03/16/2023FinalCALVIN TRANprogress
03/16/2023Fire-Resistant Penetrations and JointsXIAOJUN WANGspecial
03/16/2023Fire-Resistant Penetrations and JointsXIAOJUN WANGspecial
▾Documents — 110 on file (BIS + DOB NOW)
▸Plans & Drawings8
▸DOB NOWPlans/Sketch8
09/03/2026M00626538-I1Request digital key ↗
09/02/2026M00749854-I1Request digital key ↗
09/01/2026M08031117-I1Request digital key ↗
Showing 3 of 8 on file for this type
▸Applications & Permits12
▸BISPLAN / WORK APPROVAL APPLICATION8
10/18/2023140936361Open ↗
01/04/2023140936361Open ↗
04/01/2022140936361Open ↗
Showing 3 of 8 on file for this type
▸BISPLAN - WORK & PERMITS - SUPPPORTING DOCUMENTATION1
09/21/2020140936361Open ↗
▸BISTEMPORARY FENCE APPLICATION & PERMIT1
11/15/2022140936361Open ↗
▸BISWORK PERMIT APPLICATION1
11/18/2022140936361Open ↗
▸DOB NOWHPD Certification Letter or CPC Special Permit1
08/13/2026M00626538-I1Open ↗
▸Zoning, Tax Lot & Property Records5
▸BISZONING DIAGRAM3
10/31/2022140936361Open ↗
07/08/2022140936361Open ↗
04/26/2022140936361Open ↗
▸BISZONING EXHIBIT III:DESC. & OWNRSHP.STMNT1
04/26/2022140936361Open ↗
▸BISZONING EXHIBIT I: CERTIFICATION1
04/26/2022140936361Open ↗
▸Seals & Professional Certifications26
▸DOB NOWDPL-1: Design Professional Seal & Signature8
09/03/2026M00626538-I1Open ↗
09/02/2026M00749854-I1Open ↗
08/31/2026M00669680-P2Open ↗
Showing 3 of 8 on file for this type
▸DOB NOWProgress Inspector Seal & Signature8
10/01/2026M00669680-I1Open ↗
10/01/2026M00669680-I1Open ↗
08/26/2026M00669680-P1Open ↗
Showing 3 of 8 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature5
10/01/2026M00669680-I1Open ↗
08/26/2026M00669680-P1Open ↗
08/26/2026M00669682-I1Open ↗
Showing 3 of 5 on file for this type
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY2
11/11/2020140975363Open ↗
09/21/2020140936361Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT1
11/11/2020140975363Open ↗
▸BISAPPLICANT OWNER SIGNATURE1
09/21/2020140936361Open ↗
▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION1
11/11/2020140975363Open ↗
▸Safety & Tenant Protection17
▸DOB NOWHPD-2: Clinton Special District Anti-Harassment Checklist8
08/13/2026M00669680-P1Open ↗
08/13/2026M00626538-I1Open ↗
08/13/2026M00749854-I1Open ↗
Showing 3 of 8 on file for this type
▸BISSTREET TREE CHECKLIST4
11/15/2022140936361Open ↗
04/26/2022140936361Open ↗
12/07/2021140936361Open ↗
Showing 3 of 4 on file for this type
▸BISHPD: SRO MD CERTIFICATE OF NO HARASSMENT1
04/26/2022140936361Open ↗
▸BISTPP1: TENANT PROTECTION PLAN1
12/07/2021140936361Open ↗
▸BISCLINTON DISTRICT: ANTI-HARASSMENT CHECKLIST1
08/24/2022140936361Open ↗
▸BISSTREET TREES: RECEIPT OF STREET TREES SITE PLAN1
11/15/2022140936361Open ↗
▸DOB NOWCertificate of No Harassment1
08/13/2026M00626538-I1Open ↗
▸Environmental & Asbestos10
▸DOB NOWDEP ACP-5: Asbestos Assessment Report7
09/03/2026M00626538-I1Open ↗
09/02/2026M00749854-I1Open ↗
08/31/2026M00669680-P1Open ↗
Showing 3 of 7 on file for this type
▸BISASBESTOS: CERTIFICATION (DEP ACP5)3
08/24/2022140936361Open ↗
11/11/2020140975363Open ↗
09/21/2020140936361Open ↗
▸Energy Compliance4
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY FOR ENERGY CODE PROGRESS INSPECTIONS2
11/11/2020140975363Open ↗
09/21/2020140936361Open ↗
▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY1
11/15/2022140936361Open ↗
▸BISTR8: ENERGY CODE PROGRESS INSPS TECHNICAL REPORT1
08/24/2022140936361Open ↗
▸Inspections & Test Reports1
▸BISTECHNICAL REPORT: RESPONSIBILITY1
11/15/2022140936361Open ↗
▸Approvals, Objections & Sign-offs1
▸BISLETTERS - SUPPORTING DOCUMENTATION1
11/22/2021140936361Open ↗
▸Cost, Insurance & Ownership4
▸BISCOST AFFIDAVIT2
11/11/2020140975363Open ↗
09/21/2020140936361Open ↗
▸BISCOST AFFIDAVIT ESTIMATE: (PW3)1
08/24/2022140936361Open ↗
▸BISPROJECT-SPECIFIC GL INSURANCE1
11/15/2022140936361Open ↗
▸Filing & Intake Forms8
▸BISADDITIONAL INFORMATION6
08/03/2023140936361Open ↗
04/21/2023140936361Open ↗
10/24/2022140936361Open ↗
Showing 3 of 6 on file for this type
▸BISEFILING JOB APPLICATION COVER SHEET2
11/11/2020140975363Open ↗
09/21/2020140936361Open ↗
▸Other Documents14
▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION12
07/08/2022140936361Open ↗
07/08/2022140936361Open ↗
07/08/2022140936361Open ↗
Showing 3 of 12 on file for this type
▸BISUPGRADE COST PER NEW PW-1 FORM1
08/24/2022140936361Open ↗
▸BISSUSTAINABLE ROOF ZONE FORM1
04/26/2022140936361Open ↗