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Two family converted from one family
321 4 STREET
BROOKLYN · BIN 3021119
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1901Year Built
3Stories
B3Building Class
R6AZoning
2,688 sfGross Floor Area
2Units
0 Open ViolationsFDNY Report ↗
Two family converted from one family · 1,600 sf lot · 1.68 FAR built · Flood zone X
Locations of Work
Architecture
Floor 11p · 1 filing · 10 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
10/12/2023$3.5M—Private party → Private party$1,302/sf building
08/25/2016$3.0M—— → —$1,135/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
GARCIA-QUISMONDO, LUISMIGUEL RA209/27/2024
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
BMB BUILDING CONSULTING403/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
SYROS CONSTRUCTION CORPGeneral Contractor603/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
H2 CONSULTING PE PC835209/27/2024
Building Lifecycle
All (11)Filed (2)Permit Issued (2)Signed Off (2)Violation (1)Special Inspection (4)
12/11/2024
Signed off — Alteration
B01106650-I1
11/15/2024
Signed off — Alteration
B01106650-S1
10/11/2024
Permit issued — General Construction
B01106650-I1-GC
10/11/2024
Permit issued — Structural
B01106650-S1-ST
09/27/2024
Filed — Alteration
B01106650-S1
09/24/2024
Filed — Alteration
B01106650-I1
09/20/2024
Special inspection requirement — Structural Steel - Details
Harry Hong
09/18/2024
Special inspection requirement — Structural Steel - Welding
Harry Hong
09/05/2024
Special inspection requirement — Structural Stability – Alterations of existing buildings
Harry Hong
09/05/2024
Special inspection requirement — Final
Harry Hong
07/05/2006
Violation issued (ECB, closed)
Construction
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionSigned-offSYROS CONSTRUCTION CORP10/11/2024
DOB NOWStructuralSigned-offSYROS CONSTRUCTION CORP10/11/2024
BISPLISSUEDWAGNER ZIV PLUMBING & HEATING CO07/06/2006
BISOTISSUEDKAMAL CONSTRUCTION06/07/2006
BISOTISSUEDBRAVE CONST04/28/2006
Nothing on file for this building.
▾Special Inspection Requirements (DOB NOW) — 4
DateRequirementInspectorRole
09/20/2024Structural Steel - DetailsHarry Hongspecial
09/18/2024Structural Steel - WeldingHarry Hongspecial
09/05/2024Structural Stability – Alterations of existing buildingsHarry Hongspecial
09/05/2024FinalHarry Hongprogress
▾Documents — 12 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
08/24/2026B01106650-S1Request digital key ↗
08/24/2026B01106650-I1Request digital key ↗
▸Applications & Permits2
▸BISPLAN / WORK APPROVAL APPLICATION2
05/31/2014320883969Open ↗
03/10/2014320891335Open ↗
▸Seals & Professional Certifications6
▸DOB NOWSpecial Inspector Seal & Signature3
09/01/2026B01106650-S1Open ↗
09/01/2026B01106650-S1Open ↗
09/01/2026B01106650-S1Open ↗
▸DOB NOWDPL-1: Design Professional Seal & Signature2
08/13/2026B01106650-S1Open ↗
08/13/2026B01106650-I1Open ↗
▸DOB NOWProgress Inspector Seal & Signature1
09/01/2026B01106650-S1Open ↗
▸Environmental & Asbestos2
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
08/13/2026B01106650-S1Open ↗
08/13/2026B01106650-I1Open ↗