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Over six families without stores
447 PROSPECT PLACE
BROOKLYN · BIN 3028650
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1907Year Built
4Stories
C1Building Class
R6AZoning
8,884 sfGross Floor Area
8Units
Rent Stabilized71 Open Violations ▸FDNY Report ↗
Over six families without stores · Owner of record: 447 PROSPECT STREET LLC · 3,855 sf lot · 2.3 FAR built · Flood zone X
Locations of Work
Architecture
Permit Issued — active, not yet Signed-off
Roof1p · 1 filing · 10 docs
Floor 4Under Construction3p · 2 filings · 13 docs
Floor 3Under Construction2p · 1 filing · 3 docs
Floor 2Under Construction2p · 1 filing · 3 docs
Floor 1Under Construction2p · 1 filing · 3 docs
CellarUnder Construction4p · 2 filings · 13 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
447 PROSPECT STREET LLC103/22/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
YANG ENGINEERING LLC508/24/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
ESSENTIAL RESTORATION INCGeneral Contractor208/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
YANG ENGINEERING LLC8376105/06/2026
Building Lifecycle
All (167)Filed (5)Permit Issued (2)Violation (60)Objection (70)Special Inspection (30)
09/01/2026
Objection raised — Structural
09/01/2026
Objection raised — Inspections
09/01/2026
Objection raised — Scope
09/01/2026
Objection raised — Structural
09/01/2026
Objection raised — Structural
09/01/2026
Objection raised — Structural
08/24/2026
Filed — Alteration CO
PROPOSED HORIZONTAL AND VERTICAL ENLARGEMENT OF AN EXISTING 4-STORY 8-FAMILY BUILDING TO A 4-STORY 8-FAMILY BUILDING AS PER PLAN. OBTAIN NEW CERTIFICATE OF OCCUPANCY.
B01417767-S2
08/24/2026
Filed — Alteration CO
PROPOSED HORIZONTAL AND VERTICAL ENLARGEMENT OF AN EXISTING 4-STORY 8-FAMILY BUILDING TO A 4-STORY 8-FAMILY BUILDING AS PER PLAN. OBTAIN NEW CERTIFICATE OF OCCUPANCY.
B01417767-S1
08/21/2026
Special inspection requirement — Concrete - Cast-In-Place
08/21/2026
Special inspection requirement — Excavations - Sheeting, Shoring, and Bracing
08/21/2026
Special inspection requirement — Structural Steel - Details
08/21/2026
Special inspection requirement — Subgrade Inspections
08/21/2026
Special inspection requirement — Subsurface Investigations (Borings/Test Pits)
08/21/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
08/21/2026
Special inspection requirement — Final
08/21/2026
Special inspection requirement — Footing and Foundation
08/21/2026
Special inspection requirement — Concrete - Cast-In-Place
08/21/2026
Special inspection requirement — Structural Steel - High Strength Bolting
08/21/2026
Special inspection requirement — Structural Steel - Welding
08/21/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
08/21/2026
Special inspection requirement — Masonry
08/21/2026
Special inspection requirement — Structural Cold-Formed Steel
08/21/2026
Special inspection requirement — Structural Steel - Details
08/21/2026
Special inspection requirement — Final
08/20/2026
Permit issued — Construction Fence
B01417891-I1-FN
08/19/2026
Filed — Alteration
SUBMIT TEMPORARY CONSTRUCTION FENCE AT OPEN SPACE, NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B01417891-I1
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/12/2026
Objection resolved — Resolved
08/06/2026
Permit issued — General Construction
B01397722-I1-GC
07/29/2026
Objection raised — Scope
07/29/2026
Objection raised — Cost
07/29/2026
Objection raised — Structural
Latest 60 of 167 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWConstruction FencePermit IssuedESSENTIAL RESTORATION INC08/20/2026
DOB NOWGeneral ConstructionPermit IssuedESSENTIAL RESTORATION INC08/06/2026
1 project · most recent 08/31/2026
General Wiring
FiledStatusContractorScope
08/31/2026Permit IssuedKJK ELECTRIC INCGeneral Wiring
▾Special Inspection Requirements (DOB NOW) — 33
DateRequirementInspectorRole
08/21/2026Concrete - Cast-In-Place—special
08/21/2026Excavations - Sheeting, Shoring, and Bracing—special
08/21/2026Structural Steel - Details—special
08/21/2026Subgrade Inspections—special
08/21/2026Subsurface Investigations (Borings/Test Pits)—special
08/21/2026Structural Stability – Alterations of existing buildings—special
08/21/2026Final—progress
08/21/2026Footing and Foundation—progress
08/21/2026Concrete - Cast-In-Place—special
08/21/2026Structural Steel - High Strength Bolting—special
08/21/2026Structural Steel - Welding—special
08/21/2026Structural Stability – Alterations of existing buildings—special
08/21/2026Masonry—special
08/21/2026Structural Cold-Formed Steel—special
08/21/2026Structural Steel - Details—special
08/21/2026Final—progress
07/07/2026Interior lighting power—energy_progress
07/07/2026Fenestration air leakage—energy_progress
07/07/2026Air barrier - visual inspection—energy_progress
07/07/2026Insulation placement and R values—energy_progress
07/07/2026Lighting controls—energy_progress
07/07/2026Exterior lighting power—energy_progress
07/07/2026Fenestration and door U-factor and product ratings—energy_progress
07/07/2026Lighting in dwelling units—energy_progress
07/07/2026Maintenance information—energy_progress
Latest 25 of 33.
▾Documents — 15 on file (BIS + DOB NOW)
▸Plans & Drawings3
▸DOB NOWPlans/Sketch3
08/20/2026B01417891-I1Request digital key ↗
08/15/2026B01417767-I1Request digital key ↗
08/15/2026B01397722-I1Request digital key ↗
▸Zoning, Tax Lot & Property Records3
▸DOB NOWZD1: DOB Zoning Diagram1
08/15/2026B01417767-I1Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/15/2026B01417767-I1Open ↗
▸DOB NOWZoning Exhibit form (1-5)1
08/15/2026B01417767-I1Open ↗
▸Seals & Professional Certifications3
▸DOB NOWDPL-1: Design Professional Seal & Signature3
08/20/2026B01417891-I1Open ↗
08/17/2026B01397722-I1Open ↗
08/16/2026B01417767-I1Open ↗
▸Safety & Tenant Protection1
▸DOB NOWStreet Tree Checklist1
08/15/2026B01417767-I1Open ↗
▸Environmental & Asbestos1
▸DOB NOWDEP ACP-5: Asbestos Assessment Report1
08/15/2026B01397722-I1Open ↗
▸Other Documents4
▸DOB NOWPlot Diagram1
08/15/2026B01417767-I1Open ↗
▸DOB NOWProperty Ownership Certification1
08/15/2026B01417767-I1Open ↗
▸DOB NOWSite Survey: Initial1
08/15/2026B01417767-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone1
08/15/2026B01417767-I1Open ↗