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Two family converted from one family
23-18 21 STREET
QUEENS · BIN 4020110
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1920Year Built
3Stories
B3Building Class
R5BZoning
2,591 sfGross Floor Area
2Units
Two family converted from one family · Owner of record: 2318 21 STREET LLC · 2,000 sf lot · 1.3 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralPlumbing
Permit Issued — active, not yet Signed-off
Floor 3Under Construction14p · 1 filing · 20 docs
Floor 2Under Construction15p · 1 filing · 20 docs
Floor 1Under Construction14p · 1 filing · 20 docs
CellarUnder Construction19p · 1 filing · 20 docs
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
A. GIANNOPOULOS ARCHITECTS PLLC.507/24/2025
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
CELATECH CONSTRUCTION CORGeneral Contractor807/08/2026
G.P. MECHANICAL CORPPlumbing207/29/2026
QEC ELECTRICAL SVCE CORPElectrical103/22/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
A. GIANNOPOULOS ARCHITECT2196407/24/2025
Building Lifecycle
All (12)Filed (5)Permit Issued (7)
07/28/2026
Permit issued — Plumbing
Q00774462-S2-PL
04/27/2026
Permit issued — Structural
Q00774462-I1-GC-CX
04/27/2026
Permit issued — Construction Fence
Q01169956-I1-FN
02/13/2026
Permit issued — Construction Fence
Q01169956-I1-FN
07/24/2025
Filed — Alteration CO
PLUMBING WORK TO INCLUDE REMOVAL OF EXISTING AND INSTALLATION OF NEW PLUMBING FIXTURES FOR CELLAR, 1ST, 2ND & 3RD FLOORS, INCLUDING TWO (2) NEW COMBI-BOILERS IN CELLAR AND PIPE INSULATION. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
Q00774462-P3
05/20/2025
Permit issued — Plumbing
Q00774462-S2-PL
04/29/2025
Filed — Alteration CO
PLUMBING WORK TO INCLUDE REMOVAL OF EXISTING AND INSTALLATION OF NEW PLUMBING FIXTURES FOR CELLAR, 1ST, 2ND & 3RD FLOORS, INCLUDING TWO (2) NEW COMBI-BOILERS IN CELLAR AND PIPE INSULATION. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
Q00774462-P1
03/04/2025
Filed — Alteration CO
PLUMBING WORK TO INCLUDE REMOVAL OF EXISTING AND INSTALLATION OF NEW PLUMBING FIXTURES FOR CELLAR, 1ST, 2ND & 3RD FLOORS, INCLUDING TWO (2) NEW COMBI-BOILERS IN CELLAR AND PIPE INSULATION. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
Q00774462-S2
01/29/2025
Permit issued — General Construction
Q00774462-I1-GC-CX
01/28/2025
Permit issued — Construction Fence
Q01169956-I1-FN
01/21/2025
Filed — Alteration
INSTALLATION OF CONSTRUCTION FENCE. THIS APPLICATION IS FILED IN CONJUNCTION WITH JOB # Q00774462. NO CHANGE TO USE, EGRESS OR OCCUPANCY
Q01169956-I1
01/23/2024
Filed — Alteration CO
PLUMBING WORK TO INCLUDE REMOVAL OF EXISTING AND INSTALLATION OF NEW PLUMBING FIXTURES FOR CELLAR, 1ST, 2ND & 3RD FLOORS, INCLUDING TWO (2) NEW COMBI-BOILERS IN CELLAR AND PIPE INSULATION. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
Q00774462-I1
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingPermit IssuedG.P. MECHANICAL CORP07/28/2026
DOB NOWStructuralPermit IssuedCELATECH CONSTRUCTION COR04/27/2026
DOB NOWConstruction FencePermit IssuedCELATECH CONSTRUCTION COR04/27/2026
DOB NOWConstruction FencePermit IssuedCELATECH CONSTRUCTION COR02/13/2026
DOB NOWPlumbingPermit IssuedG.P. MECHANICAL CORP05/20/2025
DOB NOWGeneral ConstructionPermit IssuedCELATECH CONSTRUCTION COR01/29/2025
DOB NOWConstruction FencePermit IssuedCELATECH CONSTRUCTION COR01/28/2025
1 project · most recent 07/24/2025
Heating and Air Conditioning Systems Heating Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
07/24/2025Permit IssuedCELATECH CONSTRUCTION CORHeating and Air Conditioning Systems, Heating Systems, Ventilation Systems
Heat / Cool
Fujitsu ×4
Heating
Navien ×4
Ventilation
Lg ×4
1 project · most recent 07/24/2025
Gas Storm Water/Sanitary
FiledStatusContractorScope
07/24/2025Permit IssuedG.P. MECHANICAL CORPGas, Storm, Water/Sanitary
3 projects · most recent 02/09/2026
General Wiring
FiledStatusContractorScope
02/09/2026Permit IssuedQEC ELECTRICAL SVCE CORP3 meters, 3 new_meters
02/09/2026Permit IssuedQEC ELECTRICAL SVCE CORPGeneral Wiring
05/06/2022CompleteELECTRIC A/C INC1 meters
1 project · most recent 07/24/2025
Steel
FiledStatusContractorScope
07/24/2025Permit IssuedG.P. MECHANICAL CORPSteel
1 project · most recent 01/21/2025
Fence
FiledStatusContractorScope
01/21/2025Permit IssuedCELATECH CONSTRUCTION CORFence
1 project · most recent 07/24/2025
Earthwork
FiledStatusContractorScope
07/24/2025Permit IssuedG.P. MECHANICAL CORPEarthwork
▾Field Inspections (DOB CAP) — 7
DateTypeResultReport
04/02/2026Pass-Final CND-Occupancy InspectionPassView ↗
08/06/2025Certified Gas-Gas-Piping-RoughingCertifiedView ↗
08/06/2025Certified Storm Drainage-ST-Piping-RoughingCertifiedView ↗
08/06/2025Certified Storm Drainage-ST-Piping-UndergroundCertifiedView ↗
08/06/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
08/06/2025Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
07/11/2023Pass-Final PL - UndergroundPassView ↗
▾Special Inspection Requirements (DOB NOW) — 32
DateRequirementInspectorRole
06/19/2025Fire-Resistant Penetrations and JointsANASTASIOS GIANNOPOULOSspecial
06/19/2025Energy Code Compliance InspectionsANASTASIOS GIANNOPOULOSprogress
06/19/2025HVAC-R and service water heating system controlsANASTASIOS GIANNOPOULOSenergy_progress
06/19/2025HVAC-R and service water piping design and insulationANASTASIOS GIANNOPOULOSenergy_progress
06/19/2025Maintenance informationANASTASIOS GIANNOPOULOSenergy_progress
06/19/2025HVAC-R and service water heating equipmentANASTASIOS GIANNOPOULOSenergy_progress
06/06/2025HVAC-R and service water piping design and insulationANASTASIOS GIANNOPOULOSenergy_progress
06/06/2025Structural Steel - DetailsANASTASIOS GIANNOPOULOSspecial
06/06/2025Seismic Resistance of Plumbing, Mechanical, Fuel Gas, and Electrical ComponentsANASTASIOS GIANNOPOULOSspecial
06/06/2025Structural Cold-Formed SteelANASTASIOS GIANNOPOULOSspecial
06/06/2025Structural Stability – Alterations of existing buildingsANASTASIOS GIANNOPOULOSspecial
06/06/2025Seismic Resistance of Access FloorsANASTASIOS GIANNOPOULOSspecial
06/06/2025Heating SystemsANASTASIOS GIANNOPOULOSspecial
06/06/2025Excavations - Sheeting, Shoring, and BracingANASTASIOS GIANNOPOULOSspecial
06/06/2025Concrete - Cast-In-PlaceANASTASIOS GIANNOPOULOSspecial
06/06/2025Fire-Resistant Penetrations and JointsANASTASIOS GIANNOPOULOSspecial
06/06/2025Mechanical SystemsANASTASIOS GIANNOPOULOSspecial
06/06/2025MasonryANASTASIOS GIANNOPOULOSspecial
06/06/2025Construction Operations Influencing Adjacent StructuresANASTASIOS GIANNOPOULOSspecial
06/06/2025FinalANASTASIOS GIANNOPOULOSprogress
06/06/2025Footing and FoundationANASTASIOS GIANNOPOULOSprogress
06/06/2025Fire-Resistance Rated ConstructionANASTASIOS GIANNOPOULOSprogress
06/06/2025Fenestration areasANASTASIOS GIANNOPOULOSenergy_progress
06/06/2025Lighting in dwelling unitsANASTASIOS GIANNOPOULOSenergy_progress
06/06/2025Fenestration and door U-factor and product ratingsANASTASIOS GIANNOPOULOSenergy_progress
Latest 25 of 32.
▾Documents — 70 on file (BIS + DOB NOW)
▸Plans & Drawings6
▸DOB NOWPlans/Sketch6
08/21/2026Q01169956-I1Request digital key ↗
08/19/2026Q00774462-S2Request digital key ↗
08/19/2026Q00774462-P2Request digital key ↗
Showing 3 of 6 on file for this type
▸Zoning, Tax Lot & Property Records4
▸DOB NOWZD1: DOB Zoning Diagram3
08/13/2026Q00774462-P1Open ↗
08/13/2026Q00774462-P2Open ↗
08/13/2026Q00774462-I1Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026Q00774462-I1Open ↗
▸Seals & Professional Certifications38
▸DOB NOWProgress Inspector Seal & Signature19
08/29/2026Q00774462-P3Open ↗
08/29/2026Q00774462-P3Open ↗
08/29/2026Q00774462-P3Open ↗
Showing 3 of 19 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature13
08/29/2026Q00774462-P3Open ↗
08/23/2026Q00774462-I1Open ↗
08/23/2026Q00774462-I1Open ↗
Showing 3 of 13 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature6
08/21/2026Q01169956-I1Open ↗
08/19/2026Q00774462-P2Open ↗
08/19/2026Q00774462-P1Open ↗
Showing 3 of 6 on file for this type
▸Safety & Tenant Protection4
▸DOB NOWStreet Tree Checklist3
08/13/2026Q00774462-P2Open ↗
08/13/2026Q00774462-P1Open ↗
08/13/2026Q00774462-I1Open ↗
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/13/2026Q00774462-I1Open ↗
▸Environmental & Asbestos5
▸DOB NOWDEP ACP-5: Asbestos Assessment Report5
08/19/2026Q00774462-P2Open ↗
08/19/2026Q00774462-S2Open ↗
08/19/2026Q00774462-I1Open ↗
Showing 3 of 5 on file for this type
▸Other Documents13
▸DOB NOWSite Survey: Initial3
08/13/2026Q00774462-P2Open ↗
08/13/2026Q00774462-I1Open ↗
08/13/2026Q00774462-P1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone3
08/13/2026Q00774462-I1Open ↗
08/13/2026Q00774462-P1Open ↗
08/13/2026Q00774462-P2Open ↗
▸DOB NOWPlot Diagram3
08/13/2026Q00774462-I1Open ↗
08/13/2026Q00774462-P2Open ↗
08/13/2026Q00774462-P1Open ↗
▸DOB NOWProperty Ownership Certification3
08/19/2026Q00774462-P2Open ↗
08/19/2026Q00774462-I1Open ↗
08/15/2026Q00774462-P1Open ↗
▸DOB NOWAdjoining Owners Notification1
08/13/2026Q00774462-I1Open ↗