← Back
BuildNYC
Two family converted from one family
343 HANCOCK STREET
BROOKLYN · BIN 3052468
💬 Discuss this project
1905Year Built
3Stories
B3Building Class
R6BZoning
3,024 sfGross Floor Area
2Units
FDNY Report ↗
Two family converted from one family · 1,800 sf lot · 1.68 FAR built · Flood zone X
Locations of Work
Names shown beside floors are taken automatically from the text of filed documents and may be incomplete or wrong.
Floor 3Plumbing and cellar work2 filings · 8 docs
Floor 2Plumbing and cellar work2 filings · 8 docs
Floor 1Plumbing and cellar work2 filings · 8 docs
CellarPlumbing and cellar work2 filings · 8 docs
Sub-BasementPlumbing and cellar work2 filings · 8 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
04/09/2024$1.1M—Private party → Private party$380/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
Prime Zone Building Consulting205/22/2025
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
Prime Zone Building Consulting203/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
Prime Zone Building Consulting9474205/22/2025
Building Lifecycle
All (4)Filed (2)Special Inspection (2)
05/22/2025
Filed — Alteration
B01221732-I1
05/22/2025
Filed — Alteration
PLUMBING WORK IN CONJUNCTION WITH ALT-2 APPLICATION #B01159605-I1
B01221786-I1
05/16/2025
Special inspection requirement — Tenant Protection Plan Compliance
CHI WAI CHUNG
05/16/2025
Special inspection requirement — Energy Code Compliance Inspections
JICHEN SUN
Nothing on file for this building.
1 project · most recent 05/22/2025
Gas Water/Sanitary
FiledStatusContractorScope
05/22/2025——Gas, Water/Sanitary
▾Special Inspection Requirements (DOB NOW) — 2
DateRequirementInspectorRole
05/16/2025Tenant Protection Plan ComplianceCHI WAI CHUNGspecial
05/16/2025Energy Code Compliance InspectionsJICHEN SUNprogress
▾Documents — 8 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
08/21/2026B01221732-I1Request digital key ↗
08/21/2026B01221786-I1Request digital key ↗
▸Seals & Professional Certifications4
▸DOB NOWDPL-1: Design Professional Seal & Signature2
08/21/2026B01221732-I1Open ↗
08/13/2026B01221786-I1Open ↗
▸DOB NOWProgress Inspector Seal & Signature1
08/24/2026B01221786-I1Open ↗
▸DOB NOWSpecial Inspector Seal & Signature1
08/24/2026B01221786-I1Open ↗
▸Environmental & Asbestos2
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
08/21/2026B01221732-I1Open ↗
08/13/2026B01221786-I1Open ↗