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Four families
521 WILLOUGHBY AVENUE
BROOKLYN · BIN 3048825
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1931Year Built
3Stories
C3Building Class
R7AZoning
2,400 sfGross Floor Area
4Units
Rent Stabilized19 Open Violations ▸FDNY Report ↗
Four families · 2,000 sf lot · 1.2 FAR built · Flood zone X
Locations of Work
ArchitecturePlumbingFire ProtectionGeneral
Permit Issued — active, not yet Signed-off
Roof1p · 1 filing · 4 docs
Bulkhead1p · 2 filings · 7 docs
Floor 3Under Construction12p · 1 filing · 20 docs
Floor 2Under Construction11p · 1 filing · 20 docs
Floor 1Under Construction13p · 3 filings · 20 docs
CellarUnder Construction12p · 1 filing · 20 docs
Sub-BasementUnder Construction11p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
ISRAEL/GS INTERIORS LLC G203/22/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
JRS CONSULTING506/11/2026
LEANDRO NILS DICKSON ARCHITECT, LLC312/08/2022
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
EXPEDITING 4 U703/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
GS INTERIORS LLCGeneral Contractor507/08/2026
EMPIRE PLUMBING INCPlumbing509/07/2026
RM ELECTRIC CO., INC.Electrical103/22/2026
PIPING & PLUMBING SOLUTIOFire Protection107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
ENGINEERING CONSULTING SE2050706/11/2026
M. INT'L ENGINEERING PLLC3129103/02/2022
Building Lifecycle
All (22)Filed (8)Permit Issued (10)Signed Off (4)
09/03/2026
Permit issued — Plumbing
B00553698-I1-PL
06/11/2026
Filed — Alteration
PLUMBING APPLICATION FILED IN CONJUNCTION WITH ALTERATION JOB #B00491371.
B00553698-P2
09/04/2025
Permit issued — Plumbing
B00553698-I1-PL
09/06/2024
Permit issued — Plumbing
B00553698-I1-PL
09/07/2023
Permit issued — Plumbing
B00553698-I1-PL
08/01/2023
Filed — Alteration
PLUMBING APPLICATION FILED IN CONJUNCTION WITH ALTERATION JOB #B00491371.
B00553698-P1
06/20/2023
Signed off — Alteration
Application filed herewith for Interior renovation to existing 3 story, basement, and cellar residential building. No Change in use, egress, or occupancy.
B00491371-I1
06/20/2023
Signed off — Alteration
B00553692-I1
01/26/2023
Signed off — Alteration
B00786167-I1
01/26/2023
Signed off — Alteration
B00553700-I1
01/24/2023
Permit issued — General Construction
B00491371-I1-GC
12/26/2022
Permit issued — Sprinklers
B00553700-I1-EW-SP
12/08/2022
Filed — Alteration
Application filed herewith for Interior renovation to existing 3 story, basement, and cellar residential building. No Change in use, egress, or occupancy.
B00491371-P1
12/06/2022
Permit issued — Mechanical Systems
B00553692-I1-MS
12/06/2022
Permit issued — Construction Fence
B00786167-I1-FN
08/04/2022
Filed — Alteration
B00786167-I1
04/26/2022
Permit issued — Plumbing
B00553698-I1-PL
03/02/2022
Filed — Alteration
B00553692-I1
03/02/2022
Filed — Alteration
B00553700-I1
03/02/2022
Filed — Alteration
PLUMBING APPLICATION FILED IN CONJUNCTION WITH ALTERATION JOB #B00491371.
B00553698-I1
01/03/2022
Permit issued — General Construction
B00491371-I1-GC
04/07/2021
Filed — Alteration
Application filed herewith for Interior renovation to existing 3 story, basement, and cellar residential building. No Change in use, egress, or occupancy.
B00491371-I1
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingPermit IssuedEMPIRE PLUMBING INC09/03/2026
DOB NOWPlumbingPermit IssuedEMPIRE PLUMBING INC09/04/2025
DOB NOWPlumbingPermit IssuedEMPIRE PLUMBING INC09/06/2024
DOB NOWPlumbingPermit IssuedEMPIRE PLUMBING INC09/07/2023
DOB NOWGeneral ConstructionSigned-offGS INTERIORS01/24/2023
DOB NOWSprinklersSigned-offEMPIRE PLUMBING INC12/26/2022
DOB NOWMechanical SystemsSigned-offGS INTERIORS12/06/2022
DOB NOWConstruction FenceSigned-offGS INTERIORS12/06/2022
DOB NOWPlumbingPermit IssuedEMPIRE PLUMBING INC04/26/2022
DOB NOWGeneral ConstructionSigned-offGS INTERIORS01/03/2022
1 project · most recent 06/11/2026
Gas Storm Water/Sanitary
FiledStatusContractorScope
06/11/2026Permit IssuedPIPING & PLUMBING SOLUTIOGas, Storm, Water/Sanitary
2 projects · most recent 03/31/2022
General Wiring
FiledStatusContractorScope
03/31/2022Permit IssuedPLATINUM PWR ELECTL CONTGeneral Wiring
08/11/2019Permit IssuedRM ELECTRIC CO., INC.4 meters, 4 new_meters
▾Field Inspections (DOB CAP) — 9
DateTypeResultReport
08/05/2026Pass-Final CND-Occupancy InspectionPassView ↗
07/16/2026Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
02/09/2026Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
12/15/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
12/30/2022Certified Sprinkler-SP-Fixtures-FinishCertifiedView ↗
12/28/2022Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic TestCertifiedView ↗
08/26/2022Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
05/13/2022Pass-Final PL - Up to 9 Requested FloorsPassView ↗
05/09/2022Fail-Final PL - Up to 9 Requested FloorsFailView ↗
▾Special Inspection Requirements (DOB NOW) — 32
DateRequirementInspectorRole
08/21/2026Fire-Resistant Penetrations and JointsPAUL MARINOspecial
08/21/2026Maintenance informationPAUL MARINOenergy_progress
08/21/2026HVAC-R and service water heating equipmentPAUL MARINOenergy_progress
08/21/2026HVAC-R and service water piping design and insulationPAUL MARINOenergy_progress
08/21/2026HVAC-R and service water heating system controlsPAUL MARINOenergy_progress
08/21/2026Energy Code Compliance InspectionsPAUL MARINOprogress
09/18/2024Energy Code Compliance InspectionsPAUL MARINOprogress
09/18/2024HVAC-R and service water piping design and insulationPAUL MARINOenergy_progress
09/18/2024Maintenance informationPAUL MARINOenergy_progress
09/18/2024HVAC-R and service water heating equipmentPAUL MARINOenergy_progress
09/18/2024Fire-Resistant Penetrations and JointsPAUL MARINOspecial
06/14/2023Energy Code Compliance InspectionsPAUL MARINOprogress
06/14/2023Fire-Resistant Penetrations and JointsPAUL MARINOspecial
06/14/2023HVAC-R and service water heating equipmentPAUL MARINOenergy_progress
06/14/2023HVAC-R and service water heating system controlsPAUL MARINOenergy_progress
06/14/2023Maintenance informationPAUL MARINOenergy_progress
06/14/2023HVAC-R and service water piping design and insulationPAUL MARINOenergy_progress
12/09/2022FinalKevin McCrayprogress
12/09/2022Fire-Resistance Rated ConstructionPAUL MARINOprogress
12/09/2022Energy Code Compliance InspectionsPAUL MARINOprogress
12/09/2022Exterior Insulation and Finish Systems (EIFS)PAUL MARINOspecial
12/09/2022Insulation placement and R valuesPAUL MARINOenergy_progress
12/09/2022Air barrier - visual inspectionPAUL MARINOenergy_progress
12/09/2022Lighting controlsPAUL MARINOenergy_progress
12/09/2022Exterior lighting powerPAUL MARINOenergy_progress
Latest 25 of 32.
▾Documents — 58 on file (BIS + DOB NOW)
▸Plans & Drawings8
▸DOB NOWPlans/Sketch8
09/01/2026B00491371-P1Request digital key ↗
08/31/2026B00553700-I1Request digital key ↗
08/31/2026B00553692-I1Request digital key ↗
Showing 3 of 8 on file for this type
▸Seals & Professional Certifications40
▸DOB NOWProgress Inspector Seal & Signature27
09/02/2026B00491371-I1Open ↗
09/02/2026B00491371-I1Open ↗
09/02/2026B00491371-I1Open ↗
Showing 3 of 27 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature8
09/01/2026B00491371-P1Open ↗
09/01/2026B00491371-I1Open ↗
08/31/2026B00553700-I1Open ↗
Showing 3 of 8 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature5
09/02/2026B00491371-I1Open ↗
09/02/2026B00491371-I1Open ↗
09/02/2026B00553698-P1Open ↗
Showing 3 of 5 on file for this type
▸Environmental & Asbestos7
▸DOB NOWDEP ACP-5: Asbestos Assessment Report7
09/01/2026B00491371-P1Open ↗
08/31/2026B00553700-I1Open ↗
08/31/2026B00553692-I1Open ↗
Showing 3 of 7 on file for this type
▸Energy Compliance3
▸DOB NOWEN2: As Built Energy Analysis.3
08/15/2026B00491371-I1Open ↗
08/13/2026B00553692-I1Open ↗
08/13/2026B00553698-I1Open ↗