← Back
Building
509 WILLOUGHBY AVENUE
BIN 3430429
💬 Discuss this project
—Year Built
—Stories
—Building Class
—Zoning
—Gross Floor Area
—Units
0 Open ViolationsFDNY Report ↗
Locations of Work
ArchitectureMechanicalPlumbing
Permit Issued — active, not yet Signed-off
Floor 1Under Construction12p · 1 filing · 20 docs
CellarUnder Construction11p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
MARCY PLAZA1507/08/2026
BUILDERS GROUP USA403/22/2026
BUILDING GROUP USA INC203/22/2026
11202021CNEKC02103/22/2026
MARCY PLAZ LP103/22/2026
YITZCHOK SALAMON BUILDERS103/22/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
VASILIOS ARTEMIOU PE505/05/2026
NIKOLAI KATZ ARCHITECT506/06/2025
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
BUILDERS GROUP USA INCGeneral Contractor507/08/2026
B&B MECH PLBG & HTG LLCPlumbing107/08/2026
MPI PLUMBING CORPPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
HRF SERVICES CORP56161105/05/2026
Building Lifecycle
All (148)Filed (10)Permit Issued (9)Signed Off (3)Violation (21)Inspection (5)Objection (70)Special Inspection (30)
06/04/2026
Signed off — Alteration CO
MECHANICAL SPECIFICATION FILED IN CONJUNTION WITH GC APPLICATION #B00846400-I1
B00846400-S2
06/01/2026
Special inspection requirement — Maintenance information
FAHAD FATEH
06/01/2026
Special inspection requirement — Energy Code Compliance Inspections
FAHAD FATEH
06/01/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
FAHAD FATEH
06/01/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
FAHAD FATEH
06/01/2026
Special inspection requirement — Shutoff dampers
FAHAD FATEH
06/01/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
FAHAD FATEH
06/01/2026
Special inspection requirement — Final
FAHAD FATEH
06/01/2026
Special inspection requirement — Mechanical Systems
FAHAD FATEH
06/01/2026
Special inspection requirement — HVAC-R and service water heating equipment
FAHAD FATEH
06/01/2026
Special inspection requirement — Heating Systems
FAHAD FATEH
06/01/2026
Special inspection requirement — HVAC-R and service water heating system controls
FAHAD FATEH
05/19/2026
Objection resolved — Addressed
05/18/2026
Objection raised — Cost
05/08/2026
Inspection — Certified Sprinkler-SP-Fixtures-Finish
Certified
View inspection ↗
05/06/2026
Inspection — Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test
Certified
View inspection ↗
05/05/2026
Filed — Alteration CO
MECHANICAL SPECIFICATION FILED IN CONJUNTION WITH GC APPLICATION #B00846400-I1
B00846400-P7
05/04/2026
Permit issued — General Construction
B00846400-I1-GC
11/20/2025
Signed off — Alteration CO
MECHANICAL SPECIFICATION FILED IN CONJUNTION WITH GC APPLICATION #B00846400-I1
B00846400-S1
11/19/2025
Signed off — Alteration CO
MECHANICAL SPECIFICATION FILED IN CONJUNTION WITH GC APPLICATION #B00846400-I1
B00846400-S3
09/19/2025
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
09/19/2025
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
08/18/2025
Special inspection requirement — Fenestration areas
FAHAD FATEH
08/18/2025
Special inspection requirement — Energy Code Compliance Inspections
FAHAD FATEH
08/18/2025
Special inspection requirement — Maintenance information
FAHAD FATEH
08/18/2025
Special inspection requirement — Fire-Resistance Rated Construction
FAHAD FATEH
08/18/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
FAHAD FATEH
08/18/2025
Special inspection requirement — Air barrier - visual inspection
FAHAD FATEH
08/18/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
FAHAD FATEH
08/18/2025
Special inspection requirement — Fenestration and door U-factor and product ratings
FAHAD FATEH
08/18/2025
Special inspection requirement — Fenestration air leakage
FAHAD FATEH
08/18/2025
Special inspection requirement — Metering
FAHAD FATEH
08/18/2025
Special inspection requirement — Masonry
FAHAD FATEH
08/18/2025
Special inspection requirement — Interior lighting power
FAHAD FATEH
08/18/2025
Special inspection requirement — Insulation placement and R values
FAHAD FATEH
08/18/2025
Special inspection requirement — Demolition
FAHAD FATEH
06/06/2025
Filed — Alteration CO
MECHANICAL SPECIFICATION FILED IN CONJUNTION WITH GC APPLICATION #B00846400-I1
B00846400-P6
06/05/2025
Special inspection requirement — Masonry
06/05/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
FAHAD FATEH
06/05/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
FAHAD FATEH
06/05/2025
Special inspection requirement — Demolition
06/05/2025
Special inspection requirement — Energy Code Compliance Inspections
FAHAD FATEH
05/19/2025
Objection resolved — Addressed
05/19/2025
Objection resolved — Addressed
05/16/2025
Objection raised — Zoning
05/16/2025
Objection raised — Energy
05/14/2025
Violation issued (ECB, closed)
Construction
05/12/2025
Filed — Alteration CO
MECHANICAL SPECIFICATION FILED IN CONJUNTION WITH GC APPLICATION #B00846400-I1
B00846400-P5
04/03/2025
Violation issued (ECB, closed)
Unknown
02/10/2025
Permit issued — Plumbing
B00846400-S1-PL
02/05/2025
Filed — Alteration CO
MECHANICAL SPECIFICATION FILED IN CONJUNTION WITH GC APPLICATION #B00846400-I1
B00846400-P4
01/22/2025
Permit issued — Mechanical Systems
B00846400-S2-MS
01/22/2025
Violation issued (ECB, closed)
Construction
01/02/2025
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
12/02/2024
Permit issued — General Construction
B00846400-I1-GC
12/02/2024
Permit issued — Construction Fence
B00846400-S3-FN
12/02/2024
Violation issued (ECB, closed)
Construction
12/02/2024
Violation issued (ECB, closed)
Construction
11/01/2024
Violation issued (ECB, closed)
Unknown
06/20/2024
Violation issued (ECB, closed)
Construction
Latest 60 of 148 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionPermit IssuedBUILDERS GROUP USA INC05/04/2026
DOB NOWPlumbingSigned-offTARGET PIPING NY LLC02/10/2025
DOB NOWMechanical SystemsSigned-offBUILDERS GROUP USA01/22/2025
DOB NOWGeneral ConstructionPermit IssuedBUILDERS GROUP USA12/02/2024
DOB NOWConstruction FenceSigned-offBUILDERS GROUP USA12/02/2024
DOB NOWPlumbingSigned-offYG SERVICES INC02/12/2024
DOB NOWMechanical SystemsSigned-offBUILDERS GROUP USA01/08/2024
DOB NOWConstruction FenceSigned-offBUILDERS GROUP USA11/13/2023
DOB NOWGeneral ConstructionPermit IssuedBUILDERS GROUP USA09/27/2023
1 project · most recent 05/05/2026
Heating and Air Conditioning Systems
FiledStatusContractorScopeMake / Model / Capacity
05/05/2026Permit IssuedBUILDERS GROUP USA INCHeating and Air Conditioning Systems
Heat / Cool
Mitsubishi Electric PUHY-P96TNU-A 108,000 BTU · Vrf Outdoor ×2
RXSQ24TBVJUA 108,000 BTU · Vrf Outdoor ×1
Daikin RX24BXVJU 27,000 BTU · Heat Pump Outdoor ×3
RXSQ24TBVJUA 27,000 BTU · Vrf Outdoor ×1
1 project · most recent 05/05/2026
Water/Sanitary
FiledStatusContractorScope
05/05/2026Signed-offTARGET PIPING NY LLCWater/Sanitary
1 project · most recent 06/24/2026
General Wiring
FiledStatusContractorScope
06/24/2026Permit IssuedTRUE POWER ELECL CONT LLCGeneral Wiring
1 project · most recent 05/05/2026
Fence
FiledStatusContractorScope
05/05/2026Permit IssuedBUILDERS GROUP USA INCFence
▾Field Inspections (DOB CAP) — 5
DateTypeResultReport
05/08/2026Certified Sprinkler-SP-Fixtures-FinishCertifiedView ↗
05/06/2026Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic TestCertifiedView ↗
09/19/2025Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
09/19/2025Pass-Final CND-Occupancy InspectionPassView ↗
02/15/2024Pass-Final PL - Up to 3 Requested FloorsPassView ↗
▾Special Inspection Requirements (DOB NOW) — 93
DateRequirementInspectorRole
06/01/2026FinalFAHAD FATEHprogress
06/01/2026Energy Code Compliance InspectionsFAHAD FATEHprogress
06/01/2026HVAC-R and service water piping design and insulationFAHAD FATEHenergy_progress
06/01/2026HVAC-R and service water heating system controlsFAHAD FATEHenergy_progress
06/01/2026Shutoff dampersFAHAD FATEHenergy_progress
06/01/2026HVAC-R and service water heating equipmentFAHAD FATEHenergy_progress
06/01/2026Maintenance informationFAHAD FATEHenergy_progress
06/01/2026Structural Stability – Alterations of existing buildingsFAHAD FATEHspecial
06/01/2026Mechanical SystemsFAHAD FATEHspecial
06/01/2026Heating SystemsFAHAD FATEHspecial
06/01/2026Fire-Resistant Penetrations and JointsFAHAD FATEHspecial
08/18/2025Fire-Resistance Rated ConstructionFAHAD FATEHprogress
08/18/2025Energy Code Compliance InspectionsFAHAD FATEHprogress
08/18/2025Fenestration areasFAHAD FATEHenergy_progress
08/18/2025Maintenance informationFAHAD FATEHenergy_progress
08/18/2025Insulation placement and R valuesFAHAD FATEHenergy_progress
08/18/2025Interior lighting powerFAHAD FATEHenergy_progress
08/18/2025MeteringFAHAD FATEHenergy_progress
08/18/2025Fenestration and door U-factor and product ratingsFAHAD FATEHenergy_progress
08/18/2025Air barrier - visual inspectionFAHAD FATEHenergy_progress
08/18/2025Fenestration air leakageFAHAD FATEHenergy_progress
08/18/2025DemolitionFAHAD FATEHspecial
08/18/2025MasonryFAHAD FATEHspecial
08/18/2025Fire-Resistant Penetrations and JointsFAHAD FATEHspecial
08/18/2025Structural Stability – Alterations of existing buildingsFAHAD FATEHspecial
Latest 25 of 93.
▾Documents — 67 on file (BIS + DOB NOW)
▸Plans & Drawings10
▸DOB NOWPlans/Sketch10
08/17/2026B00846400-S2Request digital key ↗
08/17/2026B00846400-P4Request digital key ↗
08/17/2026B00846400-P2Request digital key ↗
Showing 3 of 10 on file for this type
▸Zoning, Tax Lot & Property Records1
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/15/2026B00846400-I1Open ↗
▸Seals & Professional Certifications41
▸DOB NOWProgress Inspector Seal & Signature16
09/02/2026B00846400-S1Open ↗
09/02/2026B00846400-S1Open ↗
09/01/2026B00846400-P2Open ↗
Showing 3 of 16 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature14
09/02/2026B00846400-S1Open ↗
09/01/2026B00846400-P2Open ↗
08/30/2026B00846400-P4Open ↗
Showing 3 of 14 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature11
08/17/2026B00846400-P7Open ↗
08/17/2026B00846400-S2Open ↗
08/13/2026B00846400-P4Open ↗
Showing 3 of 11 on file for this type
▸Safety & Tenant Protection4
▸DOB NOWStreet Tree Checklist4
08/13/2026B00846400-P6Open ↗
08/13/2026B00846400-I1Open ↗
08/13/2026B00846400-P3Open ↗
Showing 3 of 4 on file for this type
▸Environmental & Asbestos7
▸DOB NOWDEP ACP-5: Asbestos Assessment Report4
08/14/2026B00846400-P7Open ↗
08/13/2026B00846400-P2Open ↗
08/13/2026B00846400-P5Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form3
08/17/2026B00846400-S2Open ↗
08/13/2026B00846400-S1Open ↗
08/13/2026B00846400-I1Open ↗
▸Other Documents4
▸DOB NOWProperty Ownership Certification4
08/13/2026B00846400-P3Open ↗
08/13/2026B00846400-I1Open ↗
08/13/2026B00846400-P6Open ↗
Showing 3 of 4 on file for this type