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Three families
397A HANCOCK STREET
BROOKLYN · BIN 3052554
💬 Discuss this project
1899Year Built
3Stories
C0Building Class
R6BZoning
3,648 sfGross Floor Area
3Units
Rent Stabilized0 Open ViolationsFDNY Report ↗
Three families · 1,833 sf lot · 1.99 FAR built · Flood zone X
Locations of Work
ArchitectureMechanicalPlumbingFire Protection
Permit Issued — active, not yet Signed-off
RoofUnder Construction15p · 2 filings · 20 docs
Floor 3Under Construction19p · 2 filings · 20 docs
Floor 2Under Construction19p · 2 filings · 20 docs
Floor 1Under Construction19p · 2 filings · 20 docs
CellarUnder Construction23p · 2 filings · 20 docs
BasementUnder Construction18p · 1 filing · 20 docs
Sub-BasementUnder Construction1p · 1 filing · 3 docs
1 job · most recent 06/22/2026
Sprinkler System
FiledStatusContractorScope
06/22/2026Permit IssuedJEM FIRE PREVENTION INCSprinkler System
1 job · most recent 06/22/2026
Gas Water/Sanitary
FiledStatusContractorScope
06/22/2026Permit IssuedM & M PIPING AND HEATINGGas, Water/Sanitary
1 job · most recent 05/05/2026
General Wiring
FiledStatusContractorScope
05/05/2026Permit IssuedK.A.B. ELECTRIC CORPGeneral Wiring
1 job · most recent 06/22/2026
Wood
FiledStatusContractorScope
06/22/2026Permit IssuedJEM FIRE PREVENTION INCWood
Building Lifecycle
All (111)Filed (7)Permit Issued (5)Violation (19)Inspection (8)Objection (42)Special Inspection (30)
08/21/2026
Special inspection requirement — Fire-Resistance Rated Construction
THOMAS TUNG
08/21/2026
Special inspection requirement — Energy Code Compliance Inspections
THOMAS TUNG
08/21/2026
Special inspection requirement — Insulation placement and R values
THOMAS TUNG
08/21/2026
Special inspection requirement — Maintenance information
THOMAS TUNG
08/21/2026
Special inspection requirement — Metering
THOMAS TUNG
08/21/2026
Special inspection requirement — Structural Cold-Formed Steel
NARESH MAHANGU
08/21/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
NARESH MAHANGU
08/21/2026
Special inspection requirement — Final
CALVIN TRAN
08/21/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
08/21/2026
Special inspection requirement — Fenestration areas
THOMAS TUNG
08/21/2026
Special inspection requirement — Air barrier - visual inspection
THOMAS TUNG
08/21/2026
Special inspection requirement — Lighting controls
THOMAS TUNG
08/21/2026
Special inspection requirement — Exterior lighting power
THOMAS TUNG
08/21/2026
Special inspection requirement — Interior lighting power
THOMAS TUNG
08/21/2026
Special inspection requirement — Lighting in dwelling units
THOMAS TUNG
08/21/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
THOMAS TUNG
08/21/2026
Special inspection requirement — Fenestration air leakage
THOMAS TUNG
08/19/2026
Permit issued — Sprinklers
B01238971-S2-EW-SP
06/25/2026
Permit issued — Mechanical Systems
B01238971-S3-MS
06/23/2026
Special inspection requirement — Maintenance information
CALVIN TRAN
06/23/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
CALVIN TRAN
06/23/2026
Special inspection requirement — Energy Code Compliance Inspections
CALVIN TRAN
06/23/2026
Special inspection requirement — HVAC-R and service water heating system controls
CALVIN TRAN
06/23/2026
Special inspection requirement — HVAC-R and service water heating equipment
CALVIN TRAN
06/22/2026
Filed — Alteration CO
PROPOSED BULKHEAD VERTICAL ENLARGEMENT ON EXISTING THREE-STORY RESIDENTIAL BUILDING. TO CONVERT EXISTING 3 DWELLING UNITS INTO 2 DWELLING UNITS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01238971-S3
06/22/2026
Filed — Alteration CO
PROPOSED BULKHEAD VERTICAL ENLARGEMENT ON EXISTING THREE-STORY RESIDENTIAL BUILDING. TO CONVERT EXISTING 3 DWELLING UNITS INTO 2 DWELLING UNITS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01238971-P2
06/22/2026
Objection resolved — Resolved
06/22/2026
Special inspection requirement — Energy Code Compliance Inspections
CALVIN TRAN
06/22/2026
Special inspection requirement — Energy Code Compliance Inspections
CALVIN TRAN
06/22/2026
Special inspection requirement — Duct leakage testing, insulation and design
CALVIN TRAN
06/22/2026
Special inspection requirement — HVAC-R and service water heating system controls
CALVIN TRAN
06/22/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
CALVIN TRAN
06/22/2026
Special inspection requirement — Maintenance information
CALVIN TRAN
06/22/2026
Special inspection requirement — HVAC-R and service water heating equipment
CALVIN TRAN
06/22/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
CALVIN TRAN
06/19/2026
Objection resolved — Resolved
06/19/2026
Objection resolved — Resolved
06/19/2026
Objection resolved — Resolved
06/19/2026
Objection resolved — Resolved
06/10/2026
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
06/05/2026
Filed — Alteration CO
PROPOSED BULKHEAD VERTICAL ENLARGEMENT ON EXISTING THREE-STORY RESIDENTIAL BUILDING. TO CONVERT EXISTING 3 DWELLING UNITS INTO 2 DWELLING UNITS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01238971-S2
05/28/2026
Objection raised — Scope
05/28/2026
Objection raised — Other
05/28/2026
Objection raised — Scope
05/28/2026
Objection raised — Other
05/28/2026
Objection raised — Scope
05/27/2026
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
05/12/2026
Filed — Alteration CO
PROPOSED BULKHEAD VERTICAL ENLARGEMENT ON EXISTING THREE-STORY RESIDENTIAL BUILDING. TO CONVERT EXISTING 3 DWELLING UNITS INTO 2 DWELLING UNITS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01238971-P1
05/08/2026
Permit issued — General Construction
B01238971-I1-GC-CX
05/05/2026
Permit issued — Plumbing
B01238971-S1-PL
05/04/2026
Violation issued (HPD, closed)
A
04/21/2026
Filed — Alteration CO
PROPOSED BULKHEAD VERTICAL ENLARGEMENT ON EXISTING THREE-STORY RESIDENTIAL BUILDING. TO CONVERT EXISTING 3 DWELLING UNITS INTO 2 DWELLING UNITS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01238971-S1
04/21/2026
Objection resolved — Addressed
04/07/2026
Objection raised — Zoning
04/07/2026
Objection raised — Scope
04/07/2026
Objection resolved — Addressed
04/07/2026
Objection raised — Admin
04/07/2026
Objection resolved — Addressed
03/20/2026
Permit issued — General Construction
B01372515-I1-GC
03/20/2026
Objection resolved — Addressed
Latest 60 of 111 events.
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
MTEK1009/08/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
01/29/2026$1.8M—— → —$493/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
CQ&J CORPORATION506/22/2026
THOMAS C. TUNG, P.E.205/12/2026
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
WM ARCH203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
PRIMROSE SERVICE INCGeneral Contractor307/08/2026
JEM FIRE PREVENTION INCFire Protection108/20/2026
M & M PIPING AND HEATINGPlumbing106/27/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
NKM ENGINEERING PLLC6244406/22/2026
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSprinklersPermit IssuedJEM FIRE PREVENTION INC08/19/2026
DOB NOWMechanical SystemsPermit IssuedPRIMROSE SERVICE INC06/25/2026
DOB NOWGeneral ConstructionPermit IssuedPRIMROSE SERVICE INC05/08/2026
DOB NOWPlumbingPermit IssuedM & M PIPING AND HEATING05/05/2026
DOB NOWGeneral ConstructionPermit IssuedPRIMROSE SERVICE INC03/20/2026
▾Field Inspections (DOB CAP) — 8
DateTypeResultReport
06/10/2026Pass-Final PL - Up to 3 Requested FloorsPassView ↗
05/27/2026Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
11/25/2025Certified Gas-Gas-Piping-RoughingCertifiedView ↗
08/29/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
08/08/2025Certified Storm Drainage-ST-Piping-UndergroundCertifiedView ↗
08/08/2025Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
07/03/2025Certified Gas-Gas-Piping-RoughingCertifiedView ↗
07/03/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 53
DateRequirementInspectorRole
08/21/2026Fire-Resistance Rated ConstructionTHOMAS TUNGprogress
08/21/2026Energy Code Compliance InspectionsTHOMAS TUNGprogress
08/21/2026Insulation placement and R valuesTHOMAS TUNGenergy_progress
08/21/2026Maintenance informationTHOMAS TUNGenergy_progress
08/21/2026MeteringTHOMAS TUNGenergy_progress
08/21/2026Structural Cold-Formed SteelNARESH MAHANGUspecial
08/21/2026Structural Stability – Alterations of existing buildingsNARESH MAHANGUspecial
08/21/2026FinalCALVIN TRANprogress
08/21/2026Fire-Resistant Penetrations and JointsNARESH MAHANGUspecial
08/21/2026Fenestration areasTHOMAS TUNGenergy_progress
08/21/2026Air barrier - visual inspectionTHOMAS TUNGenergy_progress
08/21/2026Lighting controlsTHOMAS TUNGenergy_progress
08/21/2026Exterior lighting powerTHOMAS TUNGenergy_progress
08/21/2026Interior lighting powerTHOMAS TUNGenergy_progress
08/21/2026Lighting in dwelling unitsTHOMAS TUNGenergy_progress
08/21/2026Fenestration and door U-factor and product ratingsTHOMAS TUNGenergy_progress
08/21/2026Fenestration air leakageTHOMAS TUNGenergy_progress
06/23/2026Maintenance informationCALVIN TRANenergy_progress
06/23/2026HVAC-R and service water piping design and insulationCALVIN TRANenergy_progress
06/23/2026Energy Code Compliance InspectionsCALVIN TRANprogress
06/23/2026HVAC-R and service water heating system controlsCALVIN TRANenergy_progress
06/23/2026HVAC-R and service water heating equipmentCALVIN TRANenergy_progress
06/22/2026Energy Code Compliance InspectionsCALVIN TRANprogress
06/22/2026Energy Code Compliance InspectionsCALVIN TRANprogress
06/22/2026Duct leakage testing, insulation and designCALVIN TRANenergy_progress
Latest 25 of 53.
▾Documents — 61 on file (BIS + DOB NOW)
▸Plans & Drawings9
▸DOB NOWPlans/Sketch9
09/03/2026B01372515-I1Request digital key ↗
08/21/2026B01238971-P1Request digital key ↗
08/21/2026B01238971-I1Request digital key ↗
Showing 3 of 9 on file for this type
▸Zoning, Tax Lot & Property Records6
▸DOB NOWZD1: DOB Zoning Diagram3
08/17/2026B01238971-I1Open ↗
08/15/2026B01238971-P1Open ↗
08/13/2026B01238971-I1Open ↗
▸DOB NOWZoning Exhibit form (1-5)2
08/15/2026B01238971-P1Open ↗
08/13/2026B01238971-I1Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026B01238971-I1Open ↗
▸Seals & Professional Certifications28
▸DOB NOWProgress Inspector Seal & Signature17
09/01/2026B01238971-I1Open ↗
09/01/2026B01238971-I1Open ↗
09/01/2026B01238971-I1Open ↗
Showing 3 of 17 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature7
09/03/2026B01372515-I1Open ↗
08/17/2026B01238971-P2Open ↗
08/17/2026B01238971-S3Open ↗
Showing 3 of 7 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature4
09/01/2026B01238971-I1Open ↗
08/30/2026B01238971-S3Open ↗
08/30/2026B01238971-P1Open ↗
Showing 3 of 4 on file for this type
▸Safety & Tenant Protection2
▸DOB NOWStreet Tree Checklist2
08/15/2026B01238971-P1Open ↗
08/13/2026B01238971-I1Open ↗
▸Environmental & Asbestos8
▸DOB NOWDEP ACP-5: Asbestos Assessment Report8
09/03/2026B01372515-I1Open ↗
08/17/2026B01238971-P2Open ↗
08/17/2026B01238971-S3Open ↗
Showing 3 of 8 on file for this type
▸Other Documents8
▸DOB NOWSite Survey: Initial2
08/15/2026B01238971-P1Open ↗
08/13/2026B01238971-I1Open ↗
▸DOB NOWProperty Ownership Certification2
08/15/2026B01238971-P1Open ↗
08/13/2026B01238971-I1Open ↗
▸DOB NOWPlot Diagram2
08/15/2026B01238971-P1Open ↗
08/13/2026B01238971-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone2
08/15/2026B01238971-P1Open ↗
08/13/2026B01238971-I1Open ↗