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Two family converted from one family
21-37 45 AVENUE
QUEENS · BIN 4000640
💬 Discuss this project
1875Year Built
3Stories
B3Building Class
R6BZoning
2,860 sfGross Floor Area
2Units
0 Open Violations
Two family converted from one family · 2,000 sf lot · 1.43 FAR built · Flood zone X500
Locations of Work
ArchitectureStructuralMechanicalPlumbingFire ProtectionGeneral
Permit Issued — active, not yet Signed-off
RoofUnder Construction121p · 5 filings · 20 docs
Floor 3Under Construction116p · 5 filings · 20 docs
Floor 2Under Construction115p · 5 filings · 20 docs
Floor 1Under Construction115p · 5 filings · 20 docs
CellarUnder Construction122p · 5 filings · 20 docs
BasementUnder Construction12p · 1 filing · 20 docs
Sub-BasementUnder Construction96p · 4 filings · 20 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
03/25/2022$2.8M—21-37 LONG ISLAND, LLC → Private party$962/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
OMFPE CONSULTING PLLC412/08/2025
MARTOS ENGINEERING302/25/2025
BEN HERZOG ARCHITECT PC310/07/2024
ASR ENGINEERING PC108/29/2024
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
ANZALONE ARCHITECTURE2003/21/2026
ADVANCED BUILDERS SERVICES103/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
ABCAT ASSOCIATES INCGeneral Contractor1607/08/2026
TOPLINE NYC INCGeneral Contractor404/09/2026
VAND MECHANICAL INCPlumbing307/08/2026
RRP PLUMBING CORPFire Protection207/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
ADJ ENGINEERING PLLC7640412/08/2025
CHRISTIAN L. MARTOS ENGIN5965502/25/2025
BEN HERZOG ARCHITECT, PC1544210/07/2024
NEW AGE ENGINEERING PLLC7746111/21/2022
Building Lifecycle
All (80)Filed (11)Permit Issued (17)Signed Off (1)Violation (3)Inspection (2)Objection (16)Special Inspection (30)
03/25/2026
Permit issued — Plumbing
Q00784342-I1-PL
03/24/2026
Signed off — Alteration
Q01103010-I1
01/02/2026
Special inspection requirement — Mechanical Systems
Dwayne Williams
01/02/2026
Special inspection requirement — Energy Code Compliance Inspections
Dwayne Williams
01/02/2026
Special inspection requirement — HVAC-R and service water heating equipment
Dwayne Williams
01/02/2026
Special inspection requirement — Final
ADRIAN DIAS
01/02/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
Dwayne Williams
01/02/2026
Special inspection requirement — Maintenance information
Dwayne Williams
01/02/2026
Special inspection requirement — Permanent certificate
Dwayne Williams
01/02/2026
Special inspection requirement — HVAC-R and service water heating system controls
Dwayne Williams
01/02/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
Dwayne Williams
12/24/2025
Permit issued — Plumbing
Q00784347-I1-EW-SP
12/15/2025
Permit issued — Sidewalk Shed
Q01103010-I1-SH
12/12/2025
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
12/10/2025
Permit issued — General Construction
Q00783464-I1-GC
12/08/2025
Filed — Alteration
MECHANICAL WORK FILED IN CONJUNCTION WITH CONVERSION OF EXISTING 2 FAMILY TO 1 FAMILY RESIDENCE WITH REAR HORIZONTAL ADDITION. INSTALL NEW SPLIT HEAT PUMP SYSTEM TO PROVIDE HEATING AND COOLING. NO CHANGE IN USE, OCCUPANCY OR EGRESS.
Q00784339-P1
06/06/2025
Permit issued — General Construction
Q00783464-I1-GC
04/04/2025
Special inspection requirement — Fenestration air leakage
Benjamin Herzog
04/04/2025
Special inspection requirement — Construction Operations Influencing Adjacent Structures
Christian Martos
04/04/2025
Special inspection requirement — Fenestration areas
Benjamin Herzog
04/04/2025
Special inspection requirement — Insulation placement and R values
Benjamin Herzog
04/04/2025
Special inspection requirement — Chimneys and vents
Stephen Shishko
04/04/2025
Special inspection requirement — Energy Code Compliance Inspections
Benjamin Herzog
04/04/2025
Special inspection requirement — Fenestration and door U-factor and product ratings
Benjamin Herzog
04/04/2025
Special inspection requirement — Fire-Resistance Rated Construction
Benjamin Herzog
04/04/2025
Special inspection requirement — Air barrier - visual inspection
Benjamin Herzog
04/04/2025
Special inspection requirement — Protection of exposed foundation insulation
Benjamin Herzog
04/04/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
Christian Martos
04/04/2025
Special inspection requirement — Lighting in dwelling units
Benjamin Herzog
04/04/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
Benjamin Herzog
04/04/2025
Special inspection requirement — Exterior lighting power
Benjamin Herzog
03/27/2025
Permit issued — Plumbing
Q00784342-I1-PL
03/15/2025
Objection resolved — Addressed
03/15/2025
Objection resolved — Addressed
03/10/2025
Special inspection requirement — Structural Wood Frame
Christian Martos
03/10/2025
Special inspection requirement — Final
Christian Martos
03/10/2025
Special inspection requirement — Structural Cold-Formed Steel
Christian Martos
03/10/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
Christian Martos
03/10/2025
Special inspection requirement — Footing and Foundation
Christian Martos
03/10/2025
Special inspection requirement — Masonry
Christian Martos
03/10/2025
Special inspection requirement — Construction Operations Influencing Adjacent Structures
Christian Martos
02/25/2025
Filed — Alteration
Structural work in conjunction with ALT-CO conversion of two to one family home. Proposed reinforced/new framing at floors, construct new rear deck and footings, construct new framing and footings for rear addition, new bulkhead and roof framing.
Q00784330-P2
11/13/2024
Inspection — Pass-Final House Connection
Pass
View inspection ↗
10/23/2024
Objection resolved — Addressed
10/22/2024
Objection raised — Scope
10/22/2024
Objection raised — Inspections
10/22/2024
Objection raised — Zoning
10/07/2024
Filed — Alteration CO
CONVERT EXISTING 2 FAMILY TO 1 FAMILY RESIDENCE. REAR HORIZONTAL ADDITION AT THE BASEMENT AND 1ST FLOOR. CONSTRUCT STAIR BULKHEAD. INTERIOR RENOVATION.
Q00783464-P1
10/03/2024
Permit issued — General Construction
Q00784330-I1-GC-CX
10/03/2024
Permit issued — Construction Fence
Q00784353-I1-FN
10/03/2024
Permit issued — Mechanical Systems
Q00784339-I1-MS
10/03/2024
Permit issued — General Construction
Q00783464-I1-GC
08/30/2024
Permit issued — Sidewalk Shed
Q01103010-I1-SH
08/29/2024
Filed — Alteration
Q01103010-I1
04/25/2024
Permit issued — Sprinklers
Q00784347-I1-EW-SP
04/25/2024
Permit issued — Plumbing
Q00784342-I1-PL
04/12/2024
Permit issued — General Construction
Q00783464-I1-GC
04/09/2024
Permit issued — General Construction
Q00783464-I1-GC
04/02/2024
Permit issued — Construction Fence
Q00784353-I1-FN
03/27/2024
Permit issued — Structural
Q00784330-I1-GC-CX
Latest 60 of 80 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingPermit IssuedVAND MECHANICAL INC03/25/2026
DOB NOWPlumbingPermit IssuedRALPH W. LANDOLFI JR.12/24/2025
DOB NOWSidewalk ShedSigned-offTOPLINE NYC INC12/15/2025
DOB NOWGeneral ConstructionPermit IssuedABCAT ASSOCIATES INC12/10/2025
DOB NOWGeneral ConstructionPermit IssuedABCAT ASSOCIATES INC06/06/2025
DOB NOWPlumbingPermit IssuedVAND MECHANICAL INC03/27/2025
DOB NOWGeneral ConstructionPermit IssuedABCAT ASSOCIATES INC10/03/2024
DOB NOWConstruction FencePermit IssuedABCAT ASSOCIATES INC10/03/2024
DOB NOWMechanical SystemsPermit IssuedABCAT ASSOCIATES INC10/03/2024
DOB NOWGeneral ConstructionPermit IssuedABCAT ASSOCIATES INC10/03/2024
DOB NOWSidewalk ShedSigned-offTOPLINE NYC INC08/30/2024
DOB NOWSprinklersPermit IssuedRALPH W. LANDOLFI JR.04/25/2024
DOB NOWPlumbingPermit IssuedVAND MECHANICAL INC04/25/2024
DOB NOWGeneral ConstructionPermit IssuedABCAT ASSOCIATES INC04/12/2024
DOB NOWGeneral ConstructionPermit IssuedABCAT ASSOCIATES INC04/09/2024
DOB NOWConstruction FencePermit IssuedABCAT ASSOCIATES INC04/02/2024
DOB NOWStructuralPermit IssuedABCAT ASSOCIATES INC03/27/2024
1 project · most recent 03/13/2023
Gas Storm Water/Sanitary
FiledStatusContractorScope
03/13/2023Permit IssuedVAND MECHANICAL INCGas, Storm, Water/Sanitary
2 projects · most recent 08/31/2024
General Wiring
FiledStatusContractorScope
08/31/2024CompleteRICHARD NEU—
08/08/2024Permit IssuedAL-LECTRIC ELECT'L CONTRGGeneral Wiring
1 project · most recent 02/25/2025
Steel Concrete Masonry Wood
FiledStatusContractorScope
02/25/2025Permit IssuedABCAT ASSOCIATES INCSteel, Concrete, Masonry, Wood
1 project · most recent 04/04/2023
Fence
FiledStatusContractorScope
04/04/2023Permit IssuedABCAT ASSOCIATES INCFence
▾Field Inspections (DOB CAP) — 2
DateTypeResultReport
12/12/2025Certified Gas-Gas-Piping-RoughingCertifiedView ↗
11/13/2024Pass-Final House ConnectionPassView ↗
▾Special Inspection Requirements (DOB NOW) — 81
DateRequirementInspectorRole
01/02/2026Mechanical SystemsDwayne Williamsspecial
01/02/2026HVAC-R and service water heating equipmentDwayne Williamsenergy_progress
01/02/2026HVAC-R and service water heating system controlsDwayne Williamsenergy_progress
01/02/2026Permanent certificateDwayne Williamsenergy_progress
01/02/2026HVAC-R and service water piping design and insulationDwayne Williamsenergy_progress
01/02/2026Maintenance informationDwayne Williamsenergy_progress
01/02/2026FinalADRIAN DIASprogress
01/02/2026Energy Code Compliance InspectionsDwayne Williamsprogress
01/02/2026Fire-Resistant Penetrations and JointsDwayne Williamsspecial
04/04/2025Energy Code Compliance InspectionsBenjamin Herzogprogress
04/04/2025Exterior lighting powerBenjamin Herzogenergy_progress
04/04/2025Lighting in dwelling unitsBenjamin Herzogenergy_progress
04/04/2025Protection of exposed foundation insulationBenjamin Herzogenergy_progress
04/04/2025Air barrier - visual inspectionBenjamin Herzogenergy_progress
04/04/2025Fenestration and door U-factor and product ratingsBenjamin Herzogenergy_progress
04/04/2025Fenestration areasBenjamin Herzogenergy_progress
04/04/2025Chimneys and ventsStephen Shishkospecial
04/04/2025Fenestration air leakageBenjamin Herzogenergy_progress
04/04/2025Insulation placement and R valuesBenjamin Herzogenergy_progress
04/04/2025Fire-Resistant Penetrations and JointsBenjamin Herzogspecial
04/04/2025Construction Operations Influencing Adjacent StructuresChristian Martosspecial
04/04/2025Structural Stability – Alterations of existing buildingsChristian Martosspecial
04/04/2025Fire-Resistance Rated ConstructionBenjamin Herzogprogress
03/10/2025MasonryChristian Martosspecial
03/10/2025Structural Steel - High Strength BoltingChristian Martosspecial
Latest 25 of 81.
▾Documents — 85 on file (BIS + DOB NOW)
▸Plans & Drawings11
▸DOB NOWPlans/Sketch11
08/25/2026Q00784342-I1Request digital key ↗
08/25/2026Q00784347-I1Request digital key ↗
08/21/2026Q01103010-I1Request digital key ↗
Showing 3 of 11 on file for this type
▸Applications & Permits9
▸DOB NOWLPC Approval/Permit9
08/13/2026Q00784330-I1Open ↗
08/13/2026Q00783464-P1Open ↗
08/13/2026Q00784330-P1Open ↗
Showing 3 of 9 on file for this type
▸Zoning, Tax Lot & Property Records5
▸DOB NOWZoning Exhibit form (1-5)2
08/13/2026Q00783464-P1Open ↗
08/13/2026Q00783464-I1Open ↗
▸DOB NOWZD1: DOB Zoning Diagram2
08/13/2026Q00783464-P1Open ↗
08/13/2026Q00783464-I1Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026Q00783464-I1Open ↗
▸Seals & Professional Certifications40
▸DOB NOWProgress Inspector Seal & Signature18
09/01/2026Q00784342-I1Open ↗
09/01/2026Q00784342-I1Open ↗
09/01/2026Q00784342-I1Open ↗
Showing 3 of 18 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature11
09/01/2026Q00784342-I1Open ↗
08/29/2026Q00784330-P1Open ↗
08/28/2026Q00783464-I1Open ↗
Showing 3 of 11 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature11
08/25/2026Q00784347-I1Open ↗
08/25/2026Q00784353-I1Open ↗
08/21/2026Q01103010-I1Open ↗
Showing 3 of 11 on file for this type
▸Trade Schedules & Equipment2
▸DOB NOWDEP: Sewer Certification (Sanitary/Storm)2
08/13/2026Q00783464-I1Open ↗
08/13/2026Q00783464-P1Open ↗
▸Safety & Tenant Protection5
▸DOB NOWStreet Tree Checklist2
08/13/2026Q00783464-I1Open ↗
08/13/2026Q00783464-P1Open ↗
▸DOB NOWStreet Trees Site Plan1
08/21/2026Q00783464-I1Open ↗
▸DOB NOWStreet Tree Sign Off1
08/21/2026Q00783464-I1Open ↗
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/13/2026Q00783464-I1Open ↗
▸Environmental & Asbestos5
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form5
08/25/2026Q00784347-I1Open ↗
08/21/2026Q00783464-I1Open ↗
08/14/2026Q00784330-I1Open ↗
Showing 3 of 5 on file for this type
▸Other Documents8
▸DOB NOWSite Survey: Initial2
08/13/2026Q00783464-P1Open ↗
08/13/2026Q00783464-I1Open ↗
▸DOB NOWPlot Diagram2
08/13/2026Q00783464-P1Open ↗
08/13/2026Q00783464-I1Open ↗
▸DOB NOWProperty Ownership Certification2
08/21/2026Q00783464-I1Open ↗
08/21/2026Q00783464-P1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone2
08/13/2026Q00783464-P1Open ↗
08/13/2026Q00783464-I1Open ↗