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One family attached or semi-detached
21-12 23 AVENUE
QUEENS · Astoria (North)-Ditmars-Steinway · BIN 4019390
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1930Year Built
3Stories
A5Building Class
R5BZoning
2,032 sfGross Floor Area
1Units
One family attached or semi-detached · 2,060 sf lot · 0.99 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralPlumbing
Roof3p · 1 filing · 7 docs
Floor 317p · 1 filing · 20 docs
Floor 212p · 1 filing · 20 docs
Floor 113p · 1 filing · 20 docs
Cellar17p · 1 filing · 20 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
02/22/2023$1.2M—Private party → Private party$586/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
NY BUILDING ASSOCIATES INC102/28/2025
CE ARCHITECT, PLLC509/27/2024
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
CE ARCHITECT, PLLC1003/21/2026
BROOKLYN SOLARWORKS103/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
L&L CONSTRUCTION DEVELOPGeneral Contractor903/21/2026
BROOKLYN SOLARWORKS LLCGeneral Contractor203/21/2026
XH&RC PLBG AND HTG INCPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
NKM ENGINEERING PLLC6244102/28/2025
TRIANGLE INSPECTION & TES7495409/27/2024
Building Lifecycle
All (57)Filed (6)Permit Issued (5)Signed Off (2)Inspection (8)Objection (6)Special Inspection (30)
10/31/2025
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
05/28/2025
Signed off — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
Q01185416-I1
03/03/2025
Permit issued — Solar
Q01185416-I1-SL
02/28/2025
Filed — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
Q01185416-I1
02/24/2025
Special inspection requirement — Air barrier - visual inspection
NARESH MAHANGU
02/24/2025
Special inspection requirement — Final
NARESH MAHANGU
02/24/2025
Special inspection requirement — Energy Code Compliance Inspections
NARESH MAHANGU
02/24/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
NARESH MAHANGU
02/24/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
12/16/2024
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
11/22/2024
Special inspection requirement — Fenestration and door U-factor and product ratings
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — Fenestration air leakage
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — HVAC-R and service water heating system controls
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — HVAC-R and service water heating equipment
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — HVAC-R and service water piping design and insulation
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — Air barrier - visual inspection
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — Insulation placement and R values
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — Interior lighting power
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — Fenestration areas
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — Structural Stability – Alterations of existing buildings
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — Structural Cold-Formed Steel
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — Energy Code Compliance Inspections
Rajasekhar Sakhamuri
11/22/2024
Special inspection requirement — Final
Rajasekhar Sakhamuri
11/14/2024
Objection resolved — Addressed
10/16/2024
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
10/04/2024
Objection raised — Other
09/30/2024
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
09/30/2024
Special inspection requirement — HVAC-R and service water heating equipment
Rajasekhar Sakhamuri
09/30/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
Rajasekhar Sakhamuri
09/30/2024
Special inspection requirement — Energy Code Compliance Inspections
Rajasekhar Sakhamuri
09/30/2024
Special inspection requirement — HVAC-R and service water piping design and insulation
Rajasekhar Sakhamuri
09/30/2024
Special inspection requirement — HVAC-R and service water heating system controls
Rajasekhar Sakhamuri
09/30/2024
Special inspection requirement — Permanent certificate
Rajasekhar Sakhamuri
09/30/2024
Special inspection requirement — Maintenance information
Rajasekhar Sakhamuri
09/27/2024
Filed — Alteration CO
Herewith filed to vertically enlarge the ext'g 2-sty 1-family builidng by (1) additional story, removal of ext'g roof, minor interior partitions on 2nd floor and new 3rd floor. New mechanical & new plumbing filed under subsequent application
Q00895945-P2
09/26/2024
Filed — Alteration CO
Herewith filed to vertically enlarge the ext'g 2-sty 1-family builidng by (1) additional story, removal of ext'g roof, minor interior partitions on 2nd floor and new 3rd floor. New mechanical & new plumbing filed under subsequent application
Q00895945-P3
09/26/2024
Special inspection requirement — Air barrier - visual inspection
Rajasekhar Sakhamuri
09/26/2024
Special inspection requirement — HVAC-R and service water heating system controls
Rajasekhar Sakhamuri
09/26/2024
Special inspection requirement — Interior lighting power
Rajasekhar Sakhamuri
09/26/2024
Special inspection requirement — HVAC-R and service water piping design and insulation
Rajasekhar Sakhamuri
09/09/2024
Signed off — Alteration CO
Herewith filed to vertically enlarge the ext'g 2-sty 1-family builidng by (1) additional story, removal of ext'g roof, minor interior partitions on 2nd floor and new 3rd floor. New mechanical & new plumbing filed under subsequent application
Q00895945-S2
08/26/2024
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
07/08/2024
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
04/26/2024
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
04/26/2024
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
04/09/2024
Permit issued — Plumbing
Q00895945-S1-PL
03/21/2024
Filed — Alteration CO
Herewith filed to vertically enlarge the ext'g 2-sty 1-family builidng by (1) additional story, removal of ext'g roof, minor interior partitions on 2nd floor and new 3rd floor. New mechanical & new plumbing filed under subsequent application
Q00895945-S1
01/22/2024
Permit issued — General Construction
Q00895945-I1-GC
01/22/2024
Permit issued — General Construction
Q00895945-I1-ST
01/11/2024
Permit issued — Construction Fence
Q00895945-S2-FN
11/15/2023
Filed — Alteration CO
Herewith filed to vertically enlarge the ext'g 2-sty 1-family builidng by (1) additional story, removal of ext'g roof, minor interior partitions on 2nd floor and new 3rd floor. New mechanical & new plumbing filed under subsequent application
Q00895945-S2
08/31/2023
Objection resolved — Addressed
08/28/2023
Objection resolved — Addressed
07/24/2023
Objection raised — Other
07/24/2023
Objection raised — Scope
07/14/2023
Filed — Alteration CO
Herewith filed to vertically enlarge the ext'g 2-sty 1-family builidng by (1) additional story, removal of ext'g roof, minor interior partitions on 2nd floor and new 3rd floor. New mechanical & new plumbing filed under subsequent application
Q00895945-I1
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSolarSigned-offBROOKLYN SOLARWORKS LLC03/03/2025
DOB NOWPlumbingPermit IssuedXH&RC PLBG AND HTG INC04/09/2024
DOB NOWGeneral ConstructionPermit IssuedL&L CONSTRUCTION DEVELOP01/22/2024
DOB NOWGeneral ConstructionPermit IssuedL&L CONSTRUCTION DEVELOP01/22/2024
DOB NOWConstruction FenceSigned-offL&L CONSTRUCTION DEVELOP01/11/2024
1 project · most recent 09/27/2024
Gas Water/Sanitary
FiledStatusContractorScope
09/27/2024Permit IssuedXH&RC PLBG AND HTG INCGas, Water/Sanitary
2 projects · most recent 02/24/2025
General Wiring
FiledStatusContractorScope
02/24/2025CompleteBROOKYLN SOLARWORKS, LLC—
01/13/2025CompleteKJK ELECTRIC INCGeneral Wiring
1 project · most recent 09/27/2024
FiledStatusContractorScope
09/27/2024Permit IssuedXH&RC PLBG AND HTG INC2 scope_items
1 project · most recent 09/27/2024
Fence
FiledStatusContractorScope
09/27/2024Permit IssuedXH&RC PLBG AND HTG INCFence
▾Field Inspections (DOB CAP) — 8
DateTypeResultReport
10/31/2025Pass-Final CND-Occupancy InspectionPassView ↗
12/16/2024Pass-Final CND-Occupancy InspectionPassView ↗
10/16/2024Pass-Final PL - Up to 3 Requested FloorsPassView ↗
09/30/2024Pass-Final CND-Occupancy InspectionPassView ↗
08/26/2024Pass-Final CND-Occupancy InspectionPassView ↗
07/08/2024Pass-Final PL - Up to 3 Requested FloorsPassView ↗
04/26/2024Certified Gas-Gas-Piping-RoughingCertifiedView ↗
04/26/2024Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 47
DateRequirementInspectorRole
02/24/2025Air barrier - visual inspectionNARESH MAHANGUenergy_progress
02/24/2025FinalNARESH MAHANGUprogress
02/24/2025Energy Code Compliance InspectionsNARESH MAHANGUprogress
02/24/2025Structural Stability – Alterations of existing buildingsNARESH MAHANGUspecial
02/24/2025Fire-Resistant Penetrations and JointsNARESH MAHANGUspecial
11/22/2024Fenestration and door U-factor and product ratingsRajasekhar Sakhamurienergy_progress
11/22/2024Fenestration air leakageRajasekhar Sakhamurienergy_progress
11/22/2024HVAC-R and service water heating system controlsRajasekhar Sakhamurienergy_progress
11/22/2024HVAC-R and service water heating equipmentRajasekhar Sakhamurienergy_progress
11/22/2024Fire-Resistant Penetrations and JointsRajasekhar Sakhamurispecial
11/22/2024HVAC-R and service water piping design and insulationRajasekhar Sakhamurienergy_progress
11/22/2024Air barrier - visual inspectionRajasekhar Sakhamurienergy_progress
11/22/2024Insulation placement and R valuesRajasekhar Sakhamurienergy_progress
11/22/2024Interior lighting powerRajasekhar Sakhamurienergy_progress
11/22/2024Fenestration areasRajasekhar Sakhamurienergy_progress
11/22/2024Structural Stability – Alterations of existing buildingsRajasekhar Sakhamurispecial
11/22/2024Structural Cold-Formed SteelRajasekhar Sakhamurispecial
11/22/2024Energy Code Compliance InspectionsRajasekhar Sakhamuriprogress
11/22/2024FinalRajasekhar Sakhamuriprogress
09/30/2024HVAC-R and service water heating equipmentRajasekhar Sakhamurienergy_progress
09/30/2024Fire-Resistant Penetrations and JointsRajasekhar Sakhamurispecial
09/30/2024Energy Code Compliance InspectionsRajasekhar Sakhamuriprogress
09/30/2024HVAC-R and service water piping design and insulationRajasekhar Sakhamurienergy_progress
09/30/2024HVAC-R and service water heating system controlsRajasekhar Sakhamurienergy_progress
09/30/2024Permanent certificateRajasekhar Sakhamurienergy_progress
Latest 25 of 47.
▾Documents — 77 on file (BIS + DOB NOW)
▸Plans & Drawings6
▸DOB NOWPlans/Sketch6
08/23/2026Q00895945-I1Request digital key ↗
08/23/2026Q00895945-P3Request digital key ↗
08/23/2026Q00895945-S2Request digital key ↗
Showing 3 of 6 on file for this type
▸Zoning, Tax Lot & Property Records3
▸DOB NOWZD1: DOB Zoning Diagram2
08/13/2026Q00895945-P2Open ↗
08/13/2026Q00895945-I1Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026Q00895945-I1Open ↗
▸Seals & Professional Certifications51
▸DOB NOWProgress Inspector Seal & Signature36
09/27/2026Q00895945-I1Open ↗
09/27/2026Q00895945-I1Open ↗
09/27/2026Q00895945-I1Open ↗
Showing 3 of 36 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature9
09/27/2026Q00895945-I1Open ↗
09/27/2026Q00895945-I1Open ↗
09/27/2026Q00895945-I1Open ↗
Showing 3 of 9 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature6
08/13/2026Q00895945-S1Open ↗
08/13/2026Q00895945-P2Open ↗
08/13/2026Q01185416-I1Open ↗
Showing 3 of 6 on file for this type
▸Safety & Tenant Protection2
▸DOB NOWStreet Tree Checklist2
08/13/2026Q00895945-I1Open ↗
08/13/2026Q00895945-P2Open ↗
▸Environmental & Asbestos5
▸DOB NOWDEP ACP-5: Asbestos Assessment Report5
08/13/2026Q00895945-P2Open ↗
08/13/2026Q00895945-S1Open ↗
08/13/2026Q00895945-I1Open ↗
Showing 3 of 5 on file for this type
▸Approvals, Objections & Sign-offs1
▸DOB NOWUtility Company Final Acceptance Letter1
08/13/2026Q01185416-I1Open ↗
▸Other Documents9
▸DOB NOWSite Survey: Initial2
08/13/2026Q00895945-I1Open ↗
08/13/2026Q00895945-P2Open ↗
▸DOB NOWPlot Diagram2
08/13/2026Q00895945-P2Open ↗
08/13/2026Q00895945-I1Open ↗
▸DOB NOWProperty Ownership Certification2
08/13/2026Q00895945-P2Open ↗
08/13/2026Q00895945-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone2
08/13/2026Q00895945-P2Open ↗
08/13/2026Q00895945-I1Open ↗
▸DOB NOWFinal Survey1
08/13/2026Q00895945-I1Open ↗