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Two family frame
1439 EAST 9 STREET
BROOKLYN · Mapleton-Midwood (West) · BIN 3174012
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1915Year Built
2.5Stories
B2Building Class
R5Zoning
3,032 sfGross Floor Area
2Units
Two family frame · 5,000 sf lot · 0.61 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbingFire ProtectionCivil
Permit Issued — active, not yet Signed-off
Floor 3Under Construction52p · 2 filings · 20 docs
Floor 2Under Construction53p · 2 filings · 20 docs
Floor 1Under Construction52p · 2 filings · 20 docs
CellarUnder Construction50p · 2 filings · 20 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
12/02/2024$4.0M—THE MARTIN WYDRA 2012 QTIP TRUST → Private party$1,319/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
HAYYAN DESIGN501/05/2026
BOHN ARCHITECTURE AND DESIGN509/08/2025
LEVIN ENGINEERING PLLC108/06/2025
ADVANCED ENGINEERING & INSPECT. PLL102/14/2025
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
4444 PPPP CORP2203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
BARUCH BUILDERS CORPGeneral Contractor904/09/2026
ARCO PLBG AND HTG INCFire Protection107/08/2026
EXPERT PLUMBING & HEATINGPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
IP CONCRETE TESTING AND I6252201/05/2026
MSM ENGINEERING SERVICES,84491101/05/2026
Building Lifecycle
All (120)Filed (12)Permit Issued (9)Inspection (9)Objection (60)Special Inspection (30)
08/11/2026
Objection raised — Energy
08/11/2026
Objection raised — Other
08/05/2026
Objection resolved — Addressed
06/02/2026
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
06/02/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
05/28/2026
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
04/02/2026
Permit issued — Sprinklers
B01177334-I1-EW-SP
03/30/2026
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
01/27/2026
Permit issued — General Construction
B01172737-I1-GC
01/08/2026
Permit issued — Mechanical Systems
B01172737-S4-MS
01/08/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
MOHAMED MAHMOUD
01/08/2026
Special inspection requirement — Subgrade Inspections
INDARDEO PARBHUNATH
01/08/2026
Special inspection requirement — Footing and Foundation
MOHAMED MAHMOUD
01/08/2026
Special inspection requirement — Concrete - Cast-In-Place
MOHAMED MAHMOUD
01/08/2026
Special inspection requirement — Final
Feng Zhang
01/07/2026
Permit issued — Construction Fence
B01174033-I1-FN
01/05/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
THE SCOPE OF WORK UNDER THIS FILING IS TO PROVIDE NECESSARY SUPPORT FOR EXCAVATION.
B01172737-P4
01/05/2026
Inspection — Certified Storm Drainage-ST-Piping-Roughing
Certified
View inspection ↗
01/05/2026
Inspection — Certified Storm Drainage-ST-Piping-Underground
Certified
View inspection ↗
01/05/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
01/05/2026
Objection resolved — Addressed
12/31/2025
Objection raised — Cost
12/19/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
12/08/2025
Objection resolved — Addressed
12/04/2025
Permit issued — Plumbing
B01172737-S5-PL
11/25/2025
Objection resolved — Addressed
11/25/2025
Objection resolved — Addressed
11/21/2025
Objection raised — Zoning
11/13/2025
Objection resolved — Addressed
11/12/2025
Objection raised — Other
11/05/2025
Filed — ALT-CO - New Building with Existing Elements to Remain
THE SCOPE OF WORK UNDER THIS FILING IS TO PROVIDE NECESSARY SUPPORT FOR EXCAVATION.
B01172737-P3
11/05/2025
Special inspection requirement — Underpinning and alternate methods of support of buildings and adjacent property
MOHAMED MAHMOUD
11/05/2025
Special inspection requirement — Excavations - Sheeting, Shoring, and Bracing
MOHAMED MAHMOUD
11/05/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
MOHAMED MAHMOUD
09/25/2025
Objection resolved — Addressed
09/25/2025
Special inspection requirement — Post-installed Anchors
MOHAMED MAHMOUD
09/25/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
MOHAMED MAHMOUD
09/23/2025
Objection raised — Admin
09/19/2025
Objection resolved — Addressed
09/17/2025
Objection raised — Admin
09/17/2025
Objection raised — Scope
09/12/2025
Inspection — Certified Storm Drainage-ST-Piping-Roughing
Certified
View inspection ↗
09/08/2025
Filed — ALT-CO - New Building with Existing Elements to Remain
THE SCOPE OF WORK UNDER THIS FILING IS TO PROVIDE NECESSARY SUPPORT FOR EXCAVATION.
B01172737-P2
09/08/2025
Special inspection requirement — Masonry
MOHAMED MAHMOUD
09/08/2025
Special inspection requirement — Exterior Insulation and Finish Systems (EIFS)
MOHAMED MAHMOUD
09/08/2025
Special inspection requirement — Private On-Site Storm Water Disposal Systems-, and Detention Facilities, Installation
MOHAMED MAHMOUD
09/08/2025
Special inspection requirement — Post-installed Anchors
MOHAMED MAHMOUD
09/08/2025
Special inspection requirement — Fire-Resistance Rated Construction
MOHAMED MAHMOUD
09/08/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
MOHAMED MAHMOUD
09/08/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
MOHAMED MAHMOUD
09/08/2025
Special inspection requirement — Energy Code Compliance Inspections
MOHAMED MAHMOUD
08/22/2025
Objection resolved — Addressed
08/20/2025
Objection raised — Inspections
08/20/2025
Objection raised — Energy
08/20/2025
Objection raised — Zoning
08/15/2025
Objection resolved — Addressed
08/14/2025
Special inspection requirement — Duct leakage testing, insulation and design
MOHAMED MAHMOUD
08/14/2025
Special inspection requirement — Maintenance information
MOHAMED MAHMOUD
08/06/2025
Filed — ALT-CO - New Building with Existing Elements to Remain
THE SCOPE OF WORK UNDER THIS FILING IS TO PROVIDE NECESSARY SUPPORT FOR EXCAVATION.
B01172737-S4
08/04/2025
Special inspection requirement — HVAC-R and service water piping design and insulation
MOHAMED MAHMOUD
Latest 60 of 120 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSprinklersPermit IssuedARCO PLBG AND HTG INC04/02/2026
DOB NOWGeneral ConstructionPermit IssuedBARUCH BUILDERS CORP01/27/2026
DOB NOWMechanical SystemsPermit IssuedBARUCH BUILDERS CORP01/08/2026
DOB NOWConstruction FencePermit IssuedBARUCH BUILDERS CORP01/07/2026
DOB NOWPlumbingPermit IssuedEXPERT PLUMBING & HEATING12/04/2025
DOB NOWStructuralPermit IssuedBARUCH BUILDERS CORP06/20/2025
DOB NOWEarth WorkPermit IssuedBARUCH BUILDERS CORP06/20/2025
DOB NOWGeneral ConstructionPermit IssuedBARUCH BUILDERS CORP06/02/2025
DOB NOWConstruction FencePermit IssuedBARUCH BUILDERS CORP02/14/2025
1 project · most recent 01/05/2026
Heating and Air Conditioning Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
01/05/2026Permit IssuedBARUCH BUILDERS CORPHeating and Air Conditioning Systems, Ventilation Systems
Heat / Cool
Daikin RXTA48AAVJU 54,000 BTU · Vrf Outdoor ×5
FXSA18AAVJU 20,000 BTU · Vrf Indoor ×2
FXSA24AAVJU 27,000 BTU · Vrf Indoor ×2
FXSA30AAVJU 34,000 BTU · Vrf Indoor ×2
FXAA12AAVJU 13,500 BTU · Vrf Indoor ×1
FXSA12AAVJU 13,500 BTU · Vrf Indoor ×1
FXSA36AAVJU 40,000 BTU · Vrf Indoor ×1
FXSA48AAVJU 47,500 BTU · Vrf Indoor ×1
FXTA12AAVJUA 13,500 BTU · Vrf Indoor ×1
FXTA48AAVJUA 54,000 BTU · Vrf Indoor ×1
RXTA24AAVJU 25,000 BTU · Vrf Outdoor ×1
RXTA60AAVJU 57,000 BTU · Vrf Outdoor ×1
Ventilation
Greenheck G-099-4VG119XQD 515 CFM · Exhaust Fan ×1
1 project · most recent 02/14/2025
FiledStatusContractorScope
02/14/2025Permit IssuedARCO PLBG AND HTG INC91 heads
1 project · most recent 01/05/2026
Storm Water/Sanitary
FiledStatusContractorScope
01/05/2026Permit IssuedEXPERT PLUMBING & HEATINGStorm, Water/Sanitary
1 project · most recent 07/28/2026
General Wiring
FiledStatusContractorScope
07/28/2026Permit IssuedFORSURE ELECTRIC NY INCGeneral Wiring
1 project · most recent 01/05/2026
Steel Concrete
FiledStatusContractorScope
01/05/2026Permit IssuedBARUCH BUILDERS CORPSteel, Concrete
1 project · most recent 02/11/2025
Fence
FiledStatusContractorScope
02/11/2025Permit IssuedBARUCH BUILDERS CORPFence
▾Field Inspections (DOB CAP) — 9
DateTypeResultReport
06/02/2026Certified Gas-Gas-Piping-RoughingCertifiedView ↗
06/02/2026Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
05/28/2026Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
03/30/2026Pass-Final CND-Occupancy InspectionPassView ↗
01/05/2026Certified Storm Drainage-ST-Piping-RoughingCertifiedView ↗
01/05/2026Certified Storm Drainage-ST-Piping-UndergroundCertifiedView ↗
01/05/2026Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
12/19/2025Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
09/12/2025Certified Storm Drainage-ST-Piping-RoughingCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 66
DateRequirementInspectorRole
01/08/2026Concrete - Cast-In-PlaceMOHAMED MAHMOUDspecial
01/08/2026Subgrade InspectionsINDARDEO PARBHUNATHspecial
01/08/2026Footing and FoundationMOHAMED MAHMOUDprogress
01/08/2026Structural Stability – Alterations of existing buildingsMOHAMED MAHMOUDspecial
01/08/2026FinalFeng Zhangprogress
11/05/2025Underpinning and alternate methods of support of buildings and adjacent propertyMOHAMED MAHMOUDspecial
11/05/2025Structural Stability – Alterations of existing buildingsMOHAMED MAHMOUDspecial
11/05/2025Excavations - Sheeting, Shoring, and BracingMOHAMED MAHMOUDspecial
09/25/2025Fire-Resistant Penetrations and JointsMOHAMED MAHMOUDspecial
09/25/2025Post-installed AnchorsMOHAMED MAHMOUDspecial
09/08/2025Fire-Resistant Penetrations and JointsMOHAMED MAHMOUDspecial
09/08/2025Fire-Resistance Rated ConstructionMOHAMED MAHMOUDprogress
09/08/2025Energy Code Compliance InspectionsMOHAMED MAHMOUDprogress
09/08/2025Structural Stability – Alterations of existing buildingsMOHAMED MAHMOUDspecial
09/08/2025Private On-Site Storm Water Disposal Systems-, and Detention Facilities, InstallationMOHAMED MAHMOUDspecial
09/08/2025Post-installed AnchorsMOHAMED MAHMOUDspecial
09/08/2025MasonryMOHAMED MAHMOUDspecial
09/08/2025Exterior Insulation and Finish Systems (EIFS)MOHAMED MAHMOUDspecial
08/14/2025Duct leakage testing, insulation and designMOHAMED MAHMOUDenergy_progress
08/14/2025Maintenance informationMOHAMED MAHMOUDenergy_progress
08/04/2025HVAC-R and service water heating system controlsMOHAMED MAHMOUDenergy_progress
08/04/2025HVAC-R and service water piping design and insulationMOHAMED MAHMOUDenergy_progress
08/04/2025HVAC-R and service water heating equipmentMOHAMED MAHMOUDenergy_progress
07/30/2025Ventilation and air distribution systemMOHAMED MAHMOUDenergy_progress
07/30/2025HVAC-R and service water heating system controlsMOHAMED MAHMOUDenergy_progress
Latest 25 of 66.
▾Documents — 133 on file (BIS + DOB NOW)
▸Plans & Drawings13
▸DOB NOWPlans/Sketch13
08/22/2026B01174033-I1Request digital key ↗
08/22/2026B01177334-I1Request digital key ↗
08/21/2026B01172737-I1Request digital key ↗
Showing 3 of 13 on file for this type
▸Applications & Permits3
▸BISPLAN / WORK APPROVAL APPLICATION2
05/20/2025340917805Open ↗
05/14/2025340917805Open ↗
▸BISBPP-5 - Authorization to the Department of Transportation1
07/31/2025340917805Open ↗
▸Zoning, Tax Lot & Property Records10
▸DOB NOWZD1: DOB Zoning Diagram4
08/21/2026B01172737-P2Open ↗
08/13/2026B01172737-P2Open ↗
08/13/2026B01172737-P1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWHouse Number Verification: TOPO Stamp3
08/13/2026B01172737-I1Open ↗
08/13/2026B01172737-P2Open ↗
08/13/2026B01172737-P1Open ↗
▸DOB NOWZoning Exhibit form (1-5)3
08/13/2026B01172737-I1Open ↗
08/13/2026B01172737-P2Open ↗
08/13/2026B01172737-P1Open ↗
▸Seals & Professional Certifications72
▸DOB NOWSpecial Inspector Seal & Signature33
09/28/2026B01172737-S8Open ↗
09/28/2026B01172737-S8Open ↗
09/28/2026B01172737-S8Open ↗
Showing 3 of 33 on file for this type
▸DOB NOWProgress Inspector Seal & Signature24
09/28/2026B01172737-S8Open ↗
09/28/2026B01172737-S8Open ↗
09/23/2026B01172737-S4Open ↗
Showing 3 of 24 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature13
08/22/2026B01177334-I1Open ↗
08/21/2026B01172737-P5Open ↗
08/21/2026B01172737-P4Open ↗
Showing 3 of 13 on file for this type
▸BISAPPLICANT OWNER SIGNATURE1
05/14/2025340917805Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY1
05/14/2025340917805Open ↗
▸Trade Schedules & Equipment3
▸DOB NOWDEP: Sewer Certification (Sanitary/Storm)3
08/13/2026B01172737-I1Open ↗
08/13/2026B01172737-P2Open ↗
08/13/2026B01172737-P1Open ↗
▸Safety & Tenant Protection4
▸BISSTREET TREES SITE PLAN1
08/11/2025340917805Open ↗
▸BISSTREET TREES: RECEIPT OF STREET TREES SITE PLAN1
07/31/2025340917805Open ↗
▸BISSTREET TREE CHECKLIST1
05/14/2025340917805Open ↗
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/13/2026B01172737-I1Open ↗
▸Environmental & Asbestos11
▸DOB NOWDEP ACP-5: Asbestos Assessment Report11
08/21/2026B01172737-P5Open ↗
08/21/2026B01172737-P4Open ↗
08/21/2026B01172737-P3Open ↗
Showing 3 of 11 on file for this type
▸Inspections & Test Reports2
▸DOB NOWGeotechnical Report (BC 1803.6)2
08/13/2026B01172737-S8Open ↗
08/13/2026B01172737-S7Open ↗
▸Filing & Intake Forms2
▸BISEFILING JOB APPLICATION COVER SHEET1
05/14/2025340917805Open ↗
▸BISADDITIONAL INFORMATION1
07/31/2025340917805Open ↗
▸Other Documents13
▸DOB NOWSite Survey: Initial3
08/13/2026B01172737-P1Open ↗
08/13/2026B01172737-I1Open ↗
08/13/2026B01172737-P2Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone3
08/13/2026B01172737-P1Open ↗
08/13/2026B01172737-P2Open ↗
08/13/2026B01172737-I1Open ↗
▸DOB NOWProperty Ownership Certification3
08/21/2026B01172737-P2Open ↗
08/21/2026B01172737-P1Open ↗
08/21/2026B01172737-I1Open ↗
▸DOB NOWAdjoining Owners Notification2
08/13/2026B01172737-S8Open ↗
08/13/2026B01172737-S7Open ↗
▸BISBPP: PHOTOS-SIGNED/SEALED BY APPLICANT1
07/31/2025340917805Open ↗
▸BISRECORDS MGMT FEE PAYMENT RECEIPT1
07/31/2025340917805Open ↗