← Back
Public elementary, junior or senior high
P.S. 321 William Penn
174 7 AVENUE · BIN 3337516
💬 Discuss this project
1931Year Built
3Stories
W1Building Class
R6BZoning
94,170 sfGross Floor Area
2Units
LL97 Covered3 Open Violations 1 unresolved · 2 paperwork only ▸FDNY Report ↗
Public elementary, junior or senior high · Owner of record: NYC DEPARTMENT OF EDUCATION · 94,760 sf lot · 0.99 FAR built · Flood zone X
Locations of Work
ArchitecturePlumbingFire Protection
Permit Issued — active, not yet Signed-off
RoofUnder Construction7p · 1 filing · 20 docs
Floor 3Under Construction18p · 1 filing · 20 docs
Floor 2Under Construction17p · 1 filing · 20 docs
Floor 1Under Construction18p · 1 filing · 20 docs
CellarUnder Construction19p · 1 filing · 20 docs
Sub-BasementUnder Construction2p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
NYC SCHOOL CONSTRUCTION AUTHORITY4807/08/2026
DEPT OF EDUCATION PS 3211303/22/2026
DEPARTMENT OF EDUCATION1203/22/2026
D.O.E P.S.321203/22/2026
DOE 040803/22/2026
D.O.E. P.S.321 0703/22/2026
D.O.E P.S.321/P.S.321 MIN203/22/2026
DEPARTMENT OF EDUCATION 0103/22/2026
DOE PS 321 040103/22/2026
D.O.E. P.S.321 MINI SCHO0103/22/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
HUA XIAO301/08/2026
DSENY ENGINEERING SERVICES, PC105/14/2025
NYAN WIN AUNG206/26/2024
SYED HUSSAIN211/29/2022
AME SERVICES INC308/29/2022
JERRY MOY102/23/2022
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
NYC SCHOOL CONSTRUCTION AUTHORITY603/21/2026
NYC SCHOOL CONSTRUCTION AUTHORITY N403/21/2026
AME SERVICES603/21/2026
DSENY ENGINEERING SERVICES203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
ARMY CONSTRUCTION LLCGeneral Contractor2007/08/2026
U & I MECHANICAL CORPGeneral Contractor407/08/2026
VARSITY PLBG AND HTG INCPlumbing307/08/2026
CHARAN ELEC'L ENTERP'S INElectrical303/22/2026
JOSEPH SPINAElectrical103/21/2026
ENVIROTRAC LTDGeneral Contractor104/09/2026
FRANCIS RICHARDSElectrical103/21/2026
SPINA JOSEPHElectrical103/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
MUNICIPAL TESTING LABORAT230901/08/2026
Building Lifecycle
All (134)Filed (12)Permit Issued (22)Signed Off (4)Violation (60)Inspection (6)Special Inspection (30)
04/27/2026
Inspection — No Access-Final PL - Up to 3 Requested Floors
No Access
View inspection ↗
04/09/2026
Violation issued (ECB, closed)
Construction
02/27/2026
Inspection — No Access-Final PL - Up to 3 Requested Floors
No Access
View inspection ↗
02/13/2026
Inspection — Pass-Final PL - Up to 9 Requested Floors
Pass
View inspection ↗
01/26/2026
Signed off — Alteration
FN/ PS321K , INSTALLATION OF CONSTRUCTION FENCE TO PROTECT PUBLICFROM WORK AREAS.
B01219962-I1
01/09/2026
Inspection — Pass-Final PL - Up to 9 Requested Floors
Pass
View inspection ↗
01/08/2026
Filed — Alteration
Remove and reinstall 1 condensing unit on the Roof to facilitate the replacement of the existing roof deck as per plans filed herewith.
B00674115-P5
01/05/2026
Special inspection requirement — Fire-Resistance Rated Construction
STEPHEN LATUS
01/05/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
CLOUD LEE
01/05/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
STEPHEN LATUS
01/05/2026
Special inspection requirement — Mechanical Systems
STEPHEN LATUS
01/05/2026
Special inspection requirement — Post-installed Anchors
STEPHEN LATUS
01/05/2026
Special inspection requirement — Energy Code Compliance Inspections
STEPHEN LATUS
01/05/2026
Special inspection requirement — Final
STEPHEN LATUS
11/18/2025
Inspection — Pass-Final PL - Up to 9 Requested Floors
Pass
View inspection ↗
10/31/2025
Signed off — Alteration
B07993275-I1
10/29/2025
Signed off — Alteration
B07993276-I1
10/29/2025
Signed off — Alteration
B07993278-I1
10/03/2025
Permit issued — General Construction
B00674115-S4-GC
07/11/2025
Permit issued — Mechanical Systems
B00674115-S1-MS
06/11/2025
Violation issued (FDNY_ORDER, closed)
06/11/2025
Violation issued (FDNY_ORDER, closed)
06/09/2025
Permit issued — Construction Fence
B01219962-I1-FN
05/19/2025
Violation issued (ECB, open)
Construction
05/19/2025
Violation issued (ECB, closed)
Construction
05/14/2025
Filed — Alteration
FN/ PS321K , INSTALLATION OF CONSTRUCTION FENCE TO PROTECT PUBLICFROM WORK AREAS.
B01219962-I1
04/16/2025
Violation issued (ECB, closed)
Construction
03/21/2025
Permit issued — Construction Fence
B07993275-I1-FN
03/10/2025
Permit issued — Plumbing
B00674115-S2-PL
01/17/2025
Permit issued — Structural
B00674115-I1-ST
01/17/2025
Permit issued — General Construction
B00674115-S4-GC
12/04/2024
Violation issued (FDNY_ORDER, closed)
12/04/2024
Violation issued (FDNY_ORDER, closed)
10/29/2024
Inspection — Pass-Final PL - Up to 9 Requested Floors
Pass
View inspection ↗
07/17/2024
Permit issued — Mechanical Systems
B00674115-S1-MS
07/05/2024
Violation issued (ECB, closed)
Construction
07/03/2024
Special inspection requirement — Energy Code Compliance Inspections
STEPHEN LATUS
07/03/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
STEPHEN LATUS
07/03/2024
Special inspection requirement — Post-installed Anchors
STEPHEN LATUS
06/26/2024
Filed — Alteration
Remove and reinstall 1 condensing unit on the Roof to facilitate the replacement of the existing roof deck as per plans filed herewith.
B00674115-P3
06/21/2024
Permit issued — Mechanical Systems
B00674115-S1-MS
06/13/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
STEPHEN LATUS
06/13/2024
Special inspection requirement — Energy Code Compliance Inspections
STEPHEN LATUS
06/13/2024
Special inspection requirement — Post-installed Anchors
STEPHEN LATUS
03/15/2024
Permit issued — Mechanical Systems
B00674115-S1-MS
03/04/2024
Violation issued (FDNY_NOV, closed)
03/01/2024
Permit issued — Plumbing
B00674115-S2-PL
02/08/2024
Violation issued (FDNY_ORDER, closed)
12/05/2023
Permit issued — Structural
B00674115-I1-ST
12/05/2023
Permit issued — General Construction
B00674115-S4-GC
11/28/2023
Filed — Alteration
Remove and reinstall 1 condensing unit on the Roof to facilitate the replacement of the existing roof deck as per plans filed herewith.
B00674115-P2
11/28/2023
Special inspection requirement — Fire-Resistance Rated Construction
STEPHEN LATUS
11/28/2023
Special inspection requirement — HVAC-R and service water piping design and insulation
CLOUD LEE
11/28/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
STEPHEN LATUS
11/28/2023
Special inspection requirement — Mechanical Systems
STEPHEN LATUS
11/28/2023
Special inspection requirement — Post-installed Anchors
STEPHEN LATUS
11/28/2023
Special inspection requirement — Energy Code Compliance Inspections
STEPHEN LATUS
11/28/2023
Special inspection requirement — Final
STEPHEN LATUS
09/26/2023
Permit issued — Construction Fence
B07993275-I1-FN
09/26/2023
Permit issued — Supported Scaffold
B07993276-I1-SF
Latest 60 of 134 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionPermit IssuedARMY CONSTRUCTION LLC10/03/2025
DOB NOWMechanical SystemsSigned-offU & I MECHANICAL CORP07/11/2025
DOB NOWConstruction FenceSigned-offENVIROTRAC LTD06/09/2025
DOB NOWConstruction FenceSigned-offARMY CONSTRUCTION LLC03/21/2025
DOB NOWPlumbingPermit IssuedVARSITY PLBG AND HTG INC03/10/2025
DOB NOWStructuralSigned-offARMY CONSTRUCTION LLC01/17/2025
DOB NOWGeneral ConstructionPermit IssuedARMY CONSTRUCTION LLC01/17/2025
DOB NOWMechanical SystemsSigned-offU & I MECHANICAL CORP07/17/2024
DOB NOWMechanical SystemsSigned-offU & I MECHANICAL CORP06/21/2024
DOB NOWMechanical SystemsSigned-offU & I MECHANICAL CORP03/15/2024
DOB NOWPlumbingPermit IssuedVARSITY PLBG AND HTG INC03/01/2024
DOB NOWStructuralSigned-offARMY CONSTRUCTION LLC12/05/2023
DOB NOWGeneral ConstructionPermit IssuedARMY CONSTRUCTION LLC12/05/2023
DOB NOWConstruction FenceSigned-offARMY CONSTRUCTION LLC09/26/2023
DOB NOWSupported ScaffoldSigned-offARMY CONSTRUCTION LLC09/26/2023
DOB NOWSidewalk ShedSigned-offARMY CONSTRUCTION LLC09/26/2023
DOB NOWPlumbingPermit IssuedVARSITY PLBG AND HTG INC03/03/2023
DOB NOWStructuralSigned-offARMY CONSTRUCTION LLC12/06/2022
DOB NOWGeneral ConstructionPermit IssuedARMY CONSTRUCTION LLC11/22/2022
DOB NOWSidewalk ShedSigned-offARMY CONSTRUCTION LLC09/21/2022
DOB NOWSupported ScaffoldSigned-offARMY CONSTRUCTION LLC09/21/2022
DOB NOWConstruction FenceSigned-offARMY CONSTRUCTION LLC09/21/2022
BISEQISSUEDGRIDSPAN CORPORATION07/22/2021
BISOTISSUEDGRIDSPAN CORPORATION07/22/2021
BISPLISSUEDVARSITY PLBG AND HTG INC07/22/2021
BISOTISSUEDGRIDSPAN CORPORATION07/12/2021
BISEQISSUEDGRIDSPAN CORPORATION11/01/2019
BISEQISSUEDASHNU INTERNATIONAL INC04/01/2019
BISOTISSUEDASHNU INTERNATIONAL INC12/28/2018
BISOTISSUEDASHNU INTERNATIONAL INC12/28/2018
BISEQISSUEDROMA SCAFFOLDING INC12/07/2018
BISEQISSUEDROMA SCAFFOLDING INC12/07/2018
BISPLISSUEDMAR-SAL PLBG & HTG, INC06/21/2018
BISEQISSUEDASHNU INTERNATIONAL INC04/03/2018
BISMHISSUEDU & I MECHANICAL CORP02/12/2018
BISOTRE-ISSUEDASHNU INTERNATIONAL INC01/08/2018
BISOTRE-ISSUEDASHNU INTERNATIONAL INC01/08/2018
BISEQISSUEDROMA SCAFFOLDING INC12/21/2017
BISEQISSUEDROMA SCAFFOLDING INC12/21/2017
BISMHISSUEDU & I MECHANICAL CORP07/17/2017
+ 24 more permits on file
1 project · most recent 01/08/2026
Air Conditioning Systems
FiledStatusContractorScopeMake / Model / Capacity
01/08/2026Permit IssuedARMY CONSTRUCTION LLCAir Conditioning Systems
Cooling
Mitsubishi Electric AHU7: PKA-A30KA7 ACCU-7: PUY-A30NHA7 30,000 BTU · Split System ×1
1 project · most recent 01/08/2026
Storm
FiledStatusContractorScope
01/08/2026Permit IssuedVARSITY PLBG AND HTG INCStorm
13 projects · most recent 05/20/2026
General Wiring Lighting
FiledStatusContractorScope
05/20/2026Permit IssuedDVM ELECTRICAL SERVICES LGeneral Wiring
02/06/2026CompleteMILAD CONTRACTING CORP.Lighting
12/09/2024CompleteCHARAN ELEC'L ENTERP'S IN—
06/22/2023CompleteANCO ELECTL CONTCTNG INC—
03/22/2023Permit IssuedSTANCO SYSTEM ELEC'L CONT—
09/21/2022Permit IssuedSTANCO SYSTEM ELEC'L CONT—
08/25/2022CompleteABM ELECTRIC, INCGeneral Wiring
01/22/2021CompleteCHARAN ELEC'L ENTERP'S IN—
12/22/2020CompleteCHARAN ELEC'L ENTERP'S IN—
11/24/2020CompleteCHARAN ELEC'L ENTERP'S IN—
04/12/2019CompleteCHARAN ELEC'L ENTERP'S IN—
01/23/2018CompleteCHARAN ELEC'L ENTERP'S IN—
01/12/2018Permit IssuedGEMINI ELECTRIC CO., INC.General Wiring
▾Field Inspections (DOB CAP) — 6
DateTypeResultReport
04/27/2026No Access-Final PL - Up to 3 Requested FloorsNo AccessView ↗
02/27/2026No Access-Final PL - Up to 3 Requested FloorsNo AccessView ↗
02/13/2026Pass-Final PL - Up to 9 Requested FloorsPassView ↗
01/09/2026Pass-Final PL - Up to 9 Requested FloorsPassView ↗
11/18/2025Pass-Final PL - Up to 9 Requested FloorsPassView ↗
10/29/2024Pass-Final PL - Up to 9 Requested FloorsPassView ↗
▾Special Inspection Requirements (DOB NOW) — 38
DateRequirementInspectorRole
01/05/2026Fire-Resistance Rated ConstructionSTEPHEN LATUSprogress
01/05/2026HVAC-R and service water piping design and insulationCLOUD LEEenergy_progress
01/05/2026Fire-Resistant Penetrations and JointsSTEPHEN LATUSspecial
01/05/2026Mechanical SystemsSTEPHEN LATUSspecial
01/05/2026Post-installed AnchorsSTEPHEN LATUSspecial
01/05/2026Energy Code Compliance InspectionsSTEPHEN LATUSprogress
01/05/2026FinalSTEPHEN LATUSprogress
07/03/2024Energy Code Compliance InspectionsSTEPHEN LATUSprogress
07/03/2024Fire-Resistant Penetrations and JointsSTEPHEN LATUSspecial
07/03/2024Post-installed AnchorsSTEPHEN LATUSspecial
06/13/2024Fire-Resistant Penetrations and JointsSTEPHEN LATUSspecial
06/13/2024Energy Code Compliance InspectionsSTEPHEN LATUSprogress
06/13/2024Post-installed AnchorsSTEPHEN LATUSspecial
11/28/2023Fire-Resistance Rated ConstructionSTEPHEN LATUSprogress
11/28/2023HVAC-R and service water piping design and insulationCLOUD LEEenergy_progress
11/28/2023Fire-Resistant Penetrations and JointsSTEPHEN LATUSspecial
11/28/2023Mechanical SystemsSTEPHEN LATUSspecial
11/28/2023Post-installed AnchorsSTEPHEN LATUSspecial
11/28/2023Energy Code Compliance InspectionsSTEPHEN LATUSprogress
11/28/2023FinalSTEPHEN LATUSprogress
12/01/2022FinalSTEPHEN LATUSprogress
12/01/2022Post-installed AnchorsSTEPHEN LATUSspecial
12/01/2022Structural Stability – Alterations of existing buildingsSTEPHEN LATUSspecial
12/01/2022MasonrySTEPHEN LATUSspecial
12/01/2022Energy Code Compliance InspectionsSTEPHEN LATUSprogress
Latest 25 of 38.
▾Tenants in the building
TenantSpaceFloorsRenovation projects
Ps321kEducation—
Project B01219962 Alteration · LOC Issued · 05/14/2025
Read from each project’s drawing title blocks and cover sheets and checked twice; a name appears only when it is the occupant, never the owner, landlord or designer.
▾Documents — 94 on file (BIS + DOB NOW)
▸Plans & Drawings12
▸DOB NOWPlans/Sketch12
08/31/2026B00674115-P3Request digital key ↗
08/31/2026B00674115-P2Request digital key ↗
08/31/2026B00674115-P1Request digital key ↗
Showing 3 of 12 on file for this type
▸Seals & Professional Certifications30
▸DOB NOWDPL-1: Design Professional Seal & Signature12
08/31/2026B00674115-P3Open ↗
08/31/2026B00674115-P2Open ↗
08/31/2026B00674115-P1Open ↗
Showing 3 of 12 on file for this type
▸DOB NOWProgress Inspector Seal & Signature10
09/27/2026B00674115-P5Open ↗
09/27/2026B00674115-P5Open ↗
09/02/2026B00674115-P3Open ↗
Showing 3 of 10 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature8
09/27/2026B00674115-P5Open ↗
09/02/2026B00674115-P3Open ↗
09/01/2026B00674115-P2Open ↗
Showing 3 of 8 on file for this type
▸Safety & Tenant Protection4
▸DOB NOWNYCSCA - Approved Site Safety Plans4
08/13/2026B07993278-I1Open ↗
08/13/2026B07993275-I1Open ↗
08/13/2026B01219962-I1Open ↗
Showing 3 of 4 on file for this type
▸Approvals, Objections & Sign-offs32
▸DOB NOWFee Exempt Supporting Document - DOF ACRIS report or BIB letter12
08/31/2026B00674115-P3Open ↗
08/31/2026B00674115-P2Open ↗
08/31/2026B00674115-P1Open ↗
Showing 3 of 12 on file for this type
▸DOB NOWDesign Commission Approval City Owned (Exterior Work)12
08/13/2026B07993276-I1Open ↗
08/13/2026B00674115-S4Open ↗
08/13/2026B00674115-I1Open ↗
Showing 3 of 12 on file for this type
▸DOB NOWDesign Commission Sign Off City Owned (Exterior Work)4
08/13/2026B01219962-I1Open ↗
08/13/2026B07993275-I1Open ↗
08/13/2026B07993276-I1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWDEP Variance (V5) letter4
08/31/2026B00674115-S2Open ↗
08/31/2026B00674115-S4Open ↗
08/31/2026B00674115-I1Open ↗
Showing 3 of 4 on file for this type
▸Other Documents16
▸DOB NOWNYCSCA - BCC Plan Examination Transmittal12
08/13/2026B07993275-I1Open ↗
08/13/2026B00674115-P2Open ↗
08/13/2026B00674115-S2Open ↗
Showing 3 of 12 on file for this type
▸DOB NOWNYCSCA Exhibit 24
08/13/2026B01219962-I1Open ↗
08/13/2026B07993278-I1Open ↗
08/13/2026B07993275-I1Open ↗
Showing 3 of 4 on file for this type