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Single or multiple dwelling with stores or offices
504 FLATBUSH AVENUE
BROOKLYN · BIN 3339420
💬 Discuss this project
1925Year Built
3Stories
S9Building Class
R7-1Zoning
7,200 sfGross Floor Area
7Units
Rent Stabilized40 Open Violations 37 unresolved · 3 paperwork only ▸FDNY Report ↗
Single or multiple dwelling with stores or offices · Owner of record: TRIPLE CAROUSEL LLC, LLC · 5,882 sf lot · 1.22 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralFire Protection
Roof4p · 1 filing · 4 docs
Floor 33p · 1 filing · 4 docs
Floor 22p · 1 filing · 4 docs
Floor 12p · 1 filing · 4 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
504 FLATBUSH AVENUE1003/21/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
05/29/2025$4.1M—504 FLATBUSH AVENUE, INC. → TRIPLE CAROUSEL LLC, LLC$569/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
H & O ENGINEERING, DPC102/10/2026
ELEVATED ENGINEERING NYC203/07/2025
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
ADVANCED BUILDERS SERVICES303/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
M. INT'L ENGINEERING PLLCGeneral Contractor303/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
HRF SERVICES CORP5616203/07/2025
Building Lifecycle
All (42)Filed (3)Permit Issued (1)Violation (28)Objection (1)Special Inspection (9)
05/07/2026
Violation issued (HPD, open)
A
03/04/2026
Objection raised — Other
02/10/2026
Filed — Full Demolition
B01356729-I1
02/10/2026
Special inspection requirement — Structural Stability – Alterations of existing Buildings
11/20/2025
Violation issued (HPD, open)
I
06/12/2025
Violation issued (HPD, open)
A
03/17/2025
Special inspection requirement — Subgrade Inspections
FAHAD FATEH
03/17/2025
Special inspection requirement — Subsurface Investigations (Borings/Test Pits)
Rui Guo
03/17/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
FAHAD FATEH
03/17/2025
Special inspection requirement — Excavations - Sheeting, Shoring, and Bracing
FAHAD FATEH
03/07/2025
Filed — Alteration
Support of Excavation application filed in conjunction with Alt-CO NB; job number: B01151502-I1.
B01151510-P1
03/05/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
FAHAD FATEH
03/05/2025
Special inspection requirement — Subgrade Inspections
FAHAD FATEH
03/05/2025
Special inspection requirement — Subsurface Investigations (Borings/Test Pits)
Rui Guo
03/05/2025
Special inspection requirement — Excavations - Sheeting, Shoring, and Bracing
FAHAD FATEH
12/10/2024
Permit issued — Support of Excavation
B01151510-I1-SE
12/06/2024
Filed — Alteration
Support of Excavation application filed in conjunction with Alt-CO NB; job number: B01151502-I1.
B01151510-I1
11/29/2024
Violation issued (HPD, open)
I
04/16/2024
Violation issued (HPD, open)
A
11/21/2023
Violation issued (HPD, open)
I
03/29/2023
Violation issued (HPD, open)
A
11/10/2022
Violation issued (HPD, open)
I
10/27/2022
Violation issued (HPD, open)
A
10/27/2022
Violation issued (HPD, closed)
C
10/27/2022
Violation issued (HPD, open)
C
10/27/2022
Violation issued (HPD, open)
C
10/27/2022
Violation issued (HPD, open)
C
10/27/2022
Violation issued (HPD, open)
A
10/27/2022
Violation issued (HPD, open)
B
10/27/2022
Violation issued (HPD, open)
A
10/27/2022
Violation issued (HPD, open)
B
06/08/2022
Violation issued (HPD, open)
A
06/08/2022
Violation issued (HPD, open)
C
06/08/2022
Violation issued (HPD, open)
B
06/08/2022
Violation issued (HPD, open)
B
03/08/2022
Violation issued (HPD, open)
I
03/08/2022
Violation issued (HPD, open)
A
04/16/2021
Violation issued (HPD, open)
I
04/16/2021
Violation issued (HPD, open)
A
10/24/2018
Violation issued (HPD, closed)
I
10/19/2015
Violation issued (HPD, closed)
I
11/22/2011
Violation issued (HPD, open)
B
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSupport of ExcavationPermit IssuedM. INT'L ENGINEERING PLLC12/10/2024
BISEQISSUEDINTERSYSTEM S&S CORP03/22/2016
BISEQISSUEDINTERSYSTEM S&S CORP03/18/2016
BISEQISSUEDINTERSYSTEM S&S CORP03/26/2015
BISEQISSUEDINTERSYSTEM S&S CORP03/20/2015
1 project · most recent 03/07/2025
FiledStatusContractorScope
03/07/2025Permit IssuedM. INT'L ENGINEERING PLLC2 scope_items
▾Special Inspection Requirements (DOB NOW) — 9
DateRequirementInspectorRole
02/10/2026Structural Stability – Alterations of existing Buildings—special
03/17/2025Subgrade InspectionsFAHAD FATEHspecial
03/17/2025Subsurface Investigations (Borings/Test Pits)Rui Guospecial
03/17/2025Structural Stability – Alterations of existing buildingsFAHAD FATEHspecial
03/17/2025Excavations - Sheeting, Shoring, and BracingFAHAD FATEHspecial
03/05/2025Structural Stability – Alterations of existing buildingsFAHAD FATEHspecial
03/05/2025Subgrade InspectionsFAHAD FATEHspecial
03/05/2025Subsurface Investigations (Borings/Test Pits)Rui Guospecial
03/05/2025Excavations - Sheeting, Shoring, and BracingFAHAD FATEHspecial
▾Documents — 33 on file (BIS + DOB NOW)
▸Plans & Drawings3
▸DOB NOWPlans/Sketch3
08/22/2026B01151510-P1Request digital key ↗
08/22/2026B01151510-I1Request digital key ↗
08/18/2026B01356729-I1Request digital key ↗
▸Applications & Permits6
▸BISWORK PERMIT APPLICATION4
04/11/2016321099468Open ↗
03/25/2016320883291Open ↗
04/01/2015321099468Open ↗
Showing 3 of 4 on file for this type
▸BISPLAN / WORK APPROVAL APPLICATION2
04/01/2015321099468Open ↗
03/25/2015320883291Open ↗
▸Seals & Professional Certifications13
▸DOB NOWSpecial Inspector Seal & Signature4
09/02/2026B01151510-I1Open ↗
09/02/2026B01151510-I1Open ↗
08/24/2026B01151510-P1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature3
08/22/2026B01151510-I1Open ↗
08/22/2026B01151510-P1Open ↗
08/18/2026B01356729-I1Open ↗
▸BISPROFESSIONAL CERTIFIED CHECKLIST2
04/01/2015321099468Open ↗
03/25/2015320883291Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT2
04/01/2015321099468Open ↗
03/25/2015320883291Open ↗
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION2
04/01/2015321099468Open ↗
03/25/2015320883291Open ↗
▸Inspections & Test Reports3
▸DOB NOWSOIL REPORT2
08/22/2026B01151510-I1Open ↗
08/13/2026B01151510-P1Open ↗
▸DOB NOWTR4 Test Report and Plot Diagram1
08/22/2026B01151510-I1Open ↗
▸Approvals, Objections & Sign-offs1
▸BISADMINISTRATIVE OBJECTIONS1
03/25/2015320883291Open ↗
▸Filing & Intake Forms2
▸BISEFILING COVER SHEET2
04/01/2015321099468Open ↗
03/25/2015320883291Open ↗
▸Other Documents5
▸DOB NOWPlot Diagram2
08/22/2026B01151510-I1Open ↗
08/13/2026B01151510-P1Open ↗
▸DOB NOWStructure Photographs1
08/13/2026B01356729-I1Open ↗
▸DOB NOWAdjoining Owners Notification1
08/22/2026B01151510-I1Open ↗
▸DOB NOWProperty Ownership Certification1
08/18/2026B01356729-I1Open ↗