← Back
Two family converted from one family
456 HANCOCK STREET
BROOKLYN · BIN 3046008
💬 Discuss this project
1899Year Built
3Stories
B3Building Class
R6BZoning
2,720 sfGross Floor Area
2Units
FDNY Report ↗
Two family converted from one family · Owner of record: MTEK PARK LLC · 1,649 sf lot · 1.65 FAR built · Flood zone X
Locations of Work
Architecture
Roof1p · 1 filing · 20 docs
Cellar1p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
MTEK1104/09/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
07/10/2025$1.2M—— → —$441/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
CLIP ARCHITECTS402/25/2026
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
WM ARCH803/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
PRIMROSE SERVICE INCGeneral Contractor104/09/2026
M & M PIPING AND HEATINGPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
SIMON7555202/25/2026
Building Lifecycle
All (44)Filed (4)Permit Issued (2)Signed Off (2)Inspection (12)Special Inspection (24)
07/21/2026
Signed off — Alteration
EXISTING 2 FAMILY BUILDING WITH PLUMBING WORK ON THE CELLAR,BASEMENT, 1ST, 2ND, AND 3RD FLOOR . THIS JOB IS RELATED TO ALT2 JOB # B01241072-I1. NO CHANGE IN USE, MEANS OF EGRESS OR OCCUPANCY
B01241072-S1
04/01/2026
Signed off — Alteration
EXISTING 2 FAMILY BUILDING WITH PLUMBING WORK ON THE CELLAR,BASEMENT, 1ST, 2ND, AND 3RD FLOOR . THIS JOB IS RELATED TO ALT2 JOB # B01241072-I1. NO CHANGE IN USE, MEANS OF EGRESS OR OCCUPANCY
B01241072-I1
03/27/2026
Inspection — Pass-Final General Construction Non-Directive 14
Pass
View inspection ↗
03/09/2026
Inspection — Fail-Final General Construction Non-Directive 14
Fail
View inspection ↗
02/25/2026
Filed — Alteration
EXISTING 2 FAMILY BUILDING WITH PLUMBING WORK ON THE CELLAR,BASEMENT, 1ST, 2ND, AND 3RD FLOOR . THIS JOB IS RELATED TO ALT2 JOB # B01241072-I1. NO CHANGE IN USE, MEANS OF EGRESS OR OCCUPANCY
B01241072-P1
02/25/2026
Special inspection requirement — Fenestration areas
Jaeyoung Jang
02/25/2026
Special inspection requirement — Air barrier - visual inspection
Jaeyoung Jang
02/25/2026
Special inspection requirement — Fenestration air leakage
Jaeyoung Jang
02/25/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
Jaeyoung Jang
02/25/2026
Special inspection requirement — HVAC-R and service water heating equipment
Jaeyoung Jang
02/25/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
SIMON JIANG
02/25/2026
Special inspection requirement — Fire-Resistance Rated Construction
Jaeyoung Jang
02/25/2026
Special inspection requirement — Energy Code Compliance Inspections
Jaeyoung Jang
02/25/2026
Special inspection requirement — Metering
Jaeyoung Jang
02/25/2026
Special inspection requirement — HVAC-R and service water heating system controls
Jaeyoung Jang
02/25/2026
Special inspection requirement — Maintenance information
Jaeyoung Jang
02/25/2026
Special inspection requirement — Interior lighting power
Jaeyoung Jang
02/25/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
Jaeyoung Jang
02/25/2026
Special inspection requirement — Insulation placement and R values
Jaeyoung Jang
02/03/2026
Special inspection requirement — Energy Code Compliance Inspections
Jaeyoung Jang
02/03/2026
Special inspection requirement — HVAC-R and service water heating equipment
Jaeyoung Jang
02/03/2026
Special inspection requirement — HVAC-R and service water heating system controls
Jaeyoung Jang
02/03/2026
Special inspection requirement — Maintenance information
Jaeyoung Jang
02/03/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
Jaeyoung Jang
02/02/2026
Filed — Alteration
EXISTING 2 FAMILY BUILDING WITH PLUMBING WORK ON THE CELLAR,BASEMENT, 1ST, 2ND, AND 3RD FLOOR . THIS JOB IS RELATED TO ALT2 JOB # B01241072-I1. NO CHANGE IN USE, MEANS OF EGRESS OR OCCUPANCY
B01241072-P2
10/13/2025
Special inspection requirement — Energy Code Compliance Inspections
Jaeyoung Jang
10/13/2025
Special inspection requirement — HVAC-R and service water piping design and insulation
Jaeyoung Jang
10/13/2025
Special inspection requirement — HVAC-R and service water heating system controls
Jaeyoung Jang
10/13/2025
Special inspection requirement — HVAC-R and service water heating equipment
Jaeyoung Jang
10/13/2025
Special inspection requirement — Maintenance information
Jaeyoung Jang
09/23/2025
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
09/23/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
09/23/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
09/10/2025
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
09/10/2025
Inspection — Certified Storm Drainage-ST-Piping-Roughing
Certified
View inspection ↗
09/10/2025
Inspection — Certified Storm Drainage-ST-Piping-Underground
Certified
View inspection ↗
09/10/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
09/08/2025
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
07/24/2025
Inspection — Certified Storm Drainage-ST-Piping-Underground
Certified
View inspection ↗
07/24/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
07/18/2025
Permit issued — General Construction
B01241072-I1-GC
07/18/2025
Permit issued — Plumbing
B01241072-S1-PL
07/15/2025
Filed — Alteration
EXISTING 2 FAMILY BUILDING WITH PLUMBING WORK ON THE CELLAR,BASEMENT, 1ST, 2ND, AND 3RD FLOOR . THIS JOB IS RELATED TO ALT2 JOB # B01241072-I1. NO CHANGE IN USE, MEANS OF EGRESS OR OCCUPANCY
B01241072-S1
07/15/2025
Filed — Alteration
EXISTING 2 FAMILY BUILDING WITH PLUMBING WORK ON THE CELLAR,BASEMENT, 1ST, 2ND, AND 3RD FLOOR . THIS JOB IS RELATED TO ALT2 JOB # B01241072-I1. NO CHANGE IN USE, MEANS OF EGRESS OR OCCUPANCY
B01241072-I1
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionSigned-offPRIMROSE SERVICE INC07/18/2025
DOB NOWPlumbingSigned-offM & M PIPING AND HEATING07/18/2025
1 project · most recent 02/25/2026
Gas Storm Water/Sanitary
FiledStatusContractorScope
02/25/2026Signed-offM & M PIPING AND HEATINGGas, Storm, Water/Sanitary
1 project · most recent 08/27/2025
General Wiring
FiledStatusContractorScope
08/27/2025CompleteK.A.B. ELECTRIC CORPGeneral Wiring
▾Field Inspections (DOB CAP) — 12
DateTypeResultReport
03/27/2026Pass-Final General Construction Non-Directive 14PassView ↗
03/09/2026Fail-Final General Construction Non-Directive 14FailView ↗
09/23/2025Certified Gas-Gas-Piping-RoughingCertifiedView ↗
09/23/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
09/23/2025Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
09/10/2025Certified Gas-Gas-Piping-RoughingCertifiedView ↗
09/10/2025Certified Storm Drainage-ST-Piping-RoughingCertifiedView ↗
09/10/2025Certified Storm Drainage-ST-Piping-UndergroundCertifiedView ↗
09/10/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
09/08/2025Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
07/24/2025Certified Storm Drainage-ST-Piping-UndergroundCertifiedView ↗
07/24/2025Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 24
DateRequirementInspectorRole
02/25/2026Fenestration areasJaeyoung Jangenergy_progress
02/25/2026Air barrier - visual inspectionJaeyoung Jangenergy_progress
02/25/2026Fenestration air leakageJaeyoung Jangenergy_progress
02/25/2026HVAC-R and service water piping design and insulationJaeyoung Jangenergy_progress
02/25/2026HVAC-R and service water heating equipmentJaeyoung Jangenergy_progress
02/25/2026Fire-Resistant Penetrations and JointsSIMON JIANGspecial
02/25/2026Fire-Resistance Rated ConstructionJaeyoung Jangprogress
02/25/2026Energy Code Compliance InspectionsJaeyoung Jangprogress
02/25/2026MeteringJaeyoung Jangenergy_progress
02/25/2026HVAC-R and service water heating system controlsJaeyoung Jangenergy_progress
02/25/2026Maintenance informationJaeyoung Jangenergy_progress
02/25/2026Interior lighting powerJaeyoung Jangenergy_progress
02/25/2026Fenestration and door U-factor and product ratingsJaeyoung Jangenergy_progress
02/25/2026Insulation placement and R valuesJaeyoung Jangenergy_progress
02/03/2026Energy Code Compliance InspectionsJaeyoung Jangprogress
02/03/2026HVAC-R and service water heating equipmentJaeyoung Jangenergy_progress
02/03/2026HVAC-R and service water heating system controlsJaeyoung Jangenergy_progress
02/03/2026Maintenance informationJaeyoung Jangenergy_progress
02/03/2026HVAC-R and service water piping design and insulationJaeyoung Jangenergy_progress
10/13/2025Energy Code Compliance InspectionsJaeyoung Jangprogress
10/13/2025HVAC-R and service water piping design and insulationJaeyoung Jangenergy_progress
10/13/2025HVAC-R and service water heating system controlsJaeyoung Jangenergy_progress
10/13/2025HVAC-R and service water heating equipmentJaeyoung Jangenergy_progress
10/13/2025Maintenance informationJaeyoung Jangenergy_progress
▾Documents — 20 on file (BIS + DOB NOW)
▸Plans & Drawings4
▸DOB NOWPlans/Sketch4
08/18/2026B01241072-S1Request digital key ↗
08/18/2026B01241072-I1Request digital key ↗
08/18/2026B01241072-P1Request digital key ↗
Showing 3 of 4 on file for this type
▸Seals & Professional Certifications12
▸DOB NOWProgress Inspector Seal & Signature7
09/20/2026B01241072-I1Open ↗
09/20/2026B01241072-I1Open ↗
09/20/2026B01241072-I1Open ↗
Showing 3 of 7 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature4
08/18/2026B01241072-S1Open ↗
08/18/2026B01241072-I1Open ↗
08/18/2026B01241072-P1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature1
09/20/2026B01241072-I1Open ↗
▸Environmental & Asbestos4
▸DOB NOWDEP ACP-5: Asbestos Assessment Report4
08/18/2026B01241072-S1Open ↗
08/18/2026B01241072-I1Open ↗
08/18/2026B01241072-P1Open ↗
Showing 3 of 4 on file for this type