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Three families
246 HANCOCK STREET
BROOKLYN · BIN 3052735
💬 Discuss this project
1889Year Built
3Stories
C0Building Class
R6BZoning
3,300 sfGross Floor Area
3Units
0 Open ViolationsFDNY Report ↗
Three families · 2,200 sf lot · 1.5 FAR built · Flood zone X
Locations of Work
ArchitecturePlumbingFire Protection
Permit Issued — active, not yet Signed-off
Floor 3Under Construction9p · 2 filings · 20 docs
Floor 2Under Construction9p · 2 filings · 20 docs
Floor 1Under Construction9p · 2 filings · 20 docs
CellarUnder Construction1 filing · 4 docs
BasementUnder Construction10p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
MNB DEVELOPERS308/29/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
01/22/2026$1.6M—Private party → 246 HANCOCK LLC$485/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
CQ&J CORPORATION408/24/2026
THOMAS C. TUNG, P.E.105/07/2026
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
WM ARCH203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
JEM FIRE PREVENTION INCFire Protection107/31/2026
PROTON CCM LLCGeneral Contractor104/09/2026
TRI CITY MECHANICAL GROUP CORPPlumbing107/31/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
SIMON7555208/24/2026
Building Lifecycle
All (72)Filed (5)Permit Issued (3)Violation (1)Objection (36)Special Inspection (27)
08/25/2026
Special inspection requirement — Sprinkler Systems
SIMON JIANG
08/25/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
SIMON JIANG
08/24/2026
Filed — Alteration CO
CONVERT EXISTING 3-STORY WITH BASEMENT,TWO(2)FAMILY INTO ONE(1)FAMILY.OBTAIN NEW C OF O.
B01389355-P1
08/24/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
SIMON JIANG
08/24/2026
Special inspection requirement — Sprinkler Systems
SIMON JIANG
07/30/2026
Permit issued — Plumbing
B01389355-S1-PL
07/30/2026
Permit issued — Sprinklers
B01389355-S3-EW-SP
07/24/2026
Objection raised — Scope
07/22/2026
Special inspection requirement — Air barrier - visual inspection
07/22/2026
Special inspection requirement — Insulation placement and R values
07/22/2026
Special inspection requirement — Air barrier — testing
07/22/2026
Special inspection requirement — Lighting in dwelling units
07/22/2026
Special inspection requirement — Fenestration air leakage
07/22/2026
Special inspection requirement — Interior lighting power
07/22/2026
Special inspection requirement — Maintenance information
07/22/2026
Special inspection requirement — Lighting controls
07/22/2026
Special inspection requirement — Exterior lighting power
07/22/2026
Special inspection requirement — Metering
07/22/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
07/22/2026
Special inspection requirement — Fenestration areas
07/09/2026
Filed — Alteration CO
CONVERT EXISTING 3-STORY WITH BASEMENT,TWO(2)FAMILY INTO ONE(1)FAMILY.OBTAIN NEW C OF O.
B01389355-S1
07/09/2026
Special inspection requirement — Energy Code Compliance Inspections
CALVIN TRAN
07/09/2026
Special inspection requirement — HVAC-R and service water heating system controls
CALVIN TRAN
07/09/2026
Special inspection requirement — HVAC-R and service water heating equipment
CALVIN TRAN
07/09/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
CALVIN TRAN
07/09/2026
Special inspection requirement — Maintenance information
CALVIN TRAN
07/06/2026
Objection resolved — Addressed
07/02/2026
Filed — Alteration CO
CONVERT EXISTING 3-STORY WITH BASEMENT,TWO(2)FAMILY INTO ONE(1)FAMILY.OBTAIN NEW C OF O.
B01389355-S3
07/01/2026
Objection resolved — Addressed
07/01/2026
Objection resolved — Open
06/29/2026
Objection resolved — Open
06/29/2026
Objection resolved — Open
05/27/2026
Objection resolved — Addressed
05/27/2026
Objection resolved — Addressed
05/27/2026
Objection resolved — Addressed
05/27/2026
Objection resolved — Addressed
05/27/2026
Objection resolved — Addressed
05/27/2026
Objection resolved — Addressed
05/27/2026
Objection resolved — Addressed
05/27/2026
Objection resolved — Addressed
05/27/2026
Objection resolved — Addressed
05/27/2026
Objection resolved — Addressed
05/27/2026
Objection resolved — Addressed
05/27/2026
Objection resolved — Addressed
05/18/2026
Objection raised — Zoning
05/18/2026
Objection raised — Admin
05/18/2026
Objection raised — Fire_Protection
05/18/2026
Objection raised — Inspections
05/18/2026
Objection raised — Zoning
05/18/2026
Objection raised — Scope
05/18/2026
Objection raised — Energy
05/18/2026
Objection raised — Other
05/18/2026
Objection raised — Scope
05/18/2026
Objection raised — Scope
05/18/2026
Objection raised — Structural
05/18/2026
Objection raised — Scope
05/18/2026
Objection raised — Other
05/18/2026
Objection raised — Scope
05/18/2026
Objection raised — Scope
05/18/2026
Objection raised — Scope
Latest 60 of 72 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingPermit IssuedTRI CITY MECHANICAL GROUP CORP07/30/2026
DOB NOWSprinklersPermit IssuedJEM FIRE PREVENTION INC07/30/2026
DOB NOWGeneral ConstructionPermit IssuedPROTON CCM LLC02/23/2026
BISPLISSUEDBEST MECHANICAL SVCS INC08/28/1997
BIS—ISSUEDM&S CONSTRUCTION AND GEN CONT07/07/1997
1 job · most recent 08/24/2026
Sprinkler System
FiledStatusContractorScope
08/24/2026Permit IssuedJEM FIRE PREVENTION INCSprinkler System
1 job · most recent 08/24/2026
Gas Water/Sanitary
FiledStatusContractorScope
08/24/2026Permit IssuedTRI CITY MECHANICAL GROUPGas, Water/Sanitary
1 job · most recent 09/24/2026
General Wiring
FiledStatusContractorScope
09/24/2026Permit IssuedJOSEPH WEINSTEIN ELECTRICGeneral Wiring
1 job · most recent 08/24/2026
Wood
FiledStatusContractorScope
08/24/2026Permit IssuedJEM FIRE PREVENTION INCWood
▾Special Inspection Requirements (DOB NOW) — 27
DateRequirementInspectorRole
08/25/2026Sprinkler SystemsSIMON JIANGspecial
08/25/2026Fire-Resistant Penetrations and JointsSIMON JIANGspecial
08/24/2026Fire-Resistant Penetrations and JointsSIMON JIANGspecial
08/24/2026Sprinkler SystemsSIMON JIANGspecial
07/22/2026Air barrier - visual inspection—energy_progress
07/22/2026Insulation placement and R values—energy_progress
07/22/2026Air barrier — testing —energy_progress
07/22/2026Lighting in dwelling units—energy_progress
07/22/2026Fenestration air leakage—energy_progress
07/22/2026Interior lighting power—energy_progress
07/22/2026Maintenance information—energy_progress
07/22/2026Lighting controls—energy_progress
07/22/2026Exterior lighting power—energy_progress
07/22/2026Metering—energy_progress
07/22/2026Fenestration and door U-factor and product ratings—energy_progress
07/22/2026Fenestration areas—energy_progress
07/09/2026Energy Code Compliance InspectionsCALVIN TRANprogress
07/09/2026HVAC-R and service water heating system controlsCALVIN TRANenergy_progress
07/09/2026HVAC-R and service water heating equipmentCALVIN TRANenergy_progress
07/09/2026HVAC-R and service water piping design and insulationCALVIN TRANenergy_progress
07/09/2026Maintenance informationCALVIN TRANenergy_progress
04/30/2026Energy Code Compliance Inspections—progress
04/30/2026Fire-Resistance Rated Construction—progress
04/30/2026Structural Wood Frame—progress
04/30/2026Fire-Resistant Penetrations and Joints—special
Latest 25 of 27.
▾Documents — 29 on file (BIS + DOB NOW)
▸Plans & Drawings4
▸DOB NOWPlans/Sketch4
08/18/2026B01352596-I1Request digital key ↗
08/17/2026B01389355-S3Request digital key ↗
08/17/2026B01389355-S1Request digital key ↗
Showing 3 of 4 on file for this type
▸Applications & Permits2
▸DOB NOWLPC Approval/Permit2
08/17/2026B01389355-S1Open ↗
08/13/2026B01352596-I1Open ↗
▸Zoning, Tax Lot & Property Records3
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/15/2026B01389355-I1Open ↗
▸DOB NOWZoning Exhibit form (1-5)1
08/15/2026B01389355-I1Open ↗
▸DOB NOWZD1: DOB Zoning Diagram1
08/15/2026B01389355-I1Open ↗
▸Seals & Professional Certifications11
▸DOB NOWProgress Inspector Seal & Signature5
08/23/2026B01389355-S1Open ↗
08/23/2026B01389355-S1Open ↗
08/23/2026B01389355-S1Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature4
08/18/2026B01352596-I1Open ↗
08/17/2026B01389355-I1Open ↗
08/17/2026B01389355-S3Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature2
09/23/2026B01389355-P1Open ↗
08/29/2026B01389355-S3Open ↗
▸Safety & Tenant Protection1
▸DOB NOWStreet Tree Checklist1
08/15/2026B01389355-I1Open ↗
▸Environmental & Asbestos4
▸DOB NOWDEP ACP-5: Asbestos Assessment Report4
08/18/2026B01352596-I1Open ↗
08/17/2026B01389355-S3Open ↗
08/17/2026B01389355-S1Open ↗
Showing 3 of 4 on file for this type
▸Other Documents4
▸DOB NOWSite Survey: Initial1
08/15/2026B01389355-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone1
08/15/2026B01389355-I1Open ↗
▸DOB NOWPlot Diagram1
08/15/2026B01389355-I1Open ↗
▸DOB NOWProperty Ownership Certification1
08/15/2026B01389355-I1Open ↗