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Large suburban residence
264 84 STREET
BROOKLYN · BIN 3152716
💬 Discuss this project
1910Year Built
3Stories
A3Building Class
R2Zoning
2,940 sfGross Floor Area
1Units
Large suburban residence · 8,000 sf lot · 0.37 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbing
Permit Issued — active, not yet Signed-off
Floor 2Under Construction65p · 1 filing · 20 docs
Floor 1Under Construction60p · 1 filing · 20 docs
CellarUnder Construction59p · 1 filing · 20 docs
1 job · most recent 07/02/2026
Heating and Air Conditioning Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
07/02/2026Permit IssuedLT PRO CONSTRUCTION INCHeating and Air Conditioning Systems, Ventilation Systems
Heat / Cool
Mitsubishi Electric MXZ-SM60NAM 60,000 BTU · Heat Pump Outdoor ×2
MXZ-3C36NAHZ 36,000 BTU · Vrf Outdoor ×1
MXZ-SM48NAMHZ 48,000 BTU · Heat Pump Outdoor ×1
Ventilation
Mitsubishi Electric LOSSNAY LGH-F300RVX 300 CFM · Erv ×2
1 job · most recent 07/02/2026
Gas Storm Water/Sanitary
FiledStatusContractorScope
07/02/2026——Gas, Storm, Water/Sanitary
1 job · most recent 07/02/2026
Steel Concrete Masonry
FiledStatusContractorScope
07/02/2026Permit IssuedLT PRO CONSTRUCTION INCSteel, Concrete, Masonry
Building Lifecycle
All (63)Filed (8)Permit Issued (6)Inspection (1)Objection (18)Special Inspection (30)
09/15/2026
Permit issued — Foundation
B01368279-S5-FO
08/26/2026
Permit issued — Support of Excavation
B01368279-S6-SE
08/10/2026
Inspection — Under Review Boiler Equipment Inspection
Under Review
View inspection ↗
07/31/2026
Objection raised — Other
07/29/2026
Objection resolved — Resolved
07/29/2026
Objection resolved — Resolved
07/29/2026
Objection resolved — Resolved
07/29/2026
Objection resolved — Resolved
07/21/2026
Permit issued — Structural
B01368279-S4-ST
07/21/2026
Permit issued — Foundation
B01368279-S3-FO-EA
07/20/2026
Permit issued — General Construction
B01368279-I1-GC-CX
07/15/2026
Objection raised — Scope
07/15/2026
Objection raised — Other
07/15/2026
Objection raised — Other
07/15/2026
Objection raised — Other
07/13/2026
Permit issued — Construction Fence
B01385633-I1-FN
07/02/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
HORIZONTAL EXTENSION OF THE EXISTING 2-STORY DETACHED ONE-FAMILY WITH CELLAR AND ATTIC. INTERIOR AND EXTERIOR WORK AS PER PLANS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01368279-S6
07/02/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
HORIZONTAL EXTENSION OF THE EXISTING 2-STORY DETACHED ONE-FAMILY WITH CELLAR AND ATTIC. INTERIOR AND EXTERIOR WORK AS PER PLANS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01368279-S5
07/02/2026
Special inspection requirement — Subsurface Investigations (Borings/Test Pits)
07/02/2026
Special inspection requirement — Subsurface Investigations (Borings/Test Pits)
07/02/2026
Special inspection requirement — Excavations - Sheeting, Shoring, and Bracing
XIONGCAI GU
07/02/2026
Special inspection requirement — Post-installed Anchors
XIONGCAI GU
07/02/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
XIONGCAI GU
07/02/2026
Special inspection requirement — Structural Steel - Welding
XIONGCAI GU
07/02/2026
Special inspection requirement — Underpinning
XIONGCAI GU
06/30/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
HORIZONTAL EXTENSION OF THE EXISTING 2-STORY DETACHED ONE-FAMILY WITH CELLAR AND ATTIC. INTERIOR AND EXTERIOR WORK AS PER PLANS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01368279-S4
06/30/2026
Special inspection requirement — Concrete - Cast-In-Place
XIONGCAI GU
06/30/2026
Special inspection requirement — Demolition
XIONGCAI GU
06/30/2026
Special inspection requirement — Masonry
XIONGCAI GU
06/30/2026
Special inspection requirement — Structural Cold-Formed Steel
XIONGCAI GU
06/30/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
XIONGCAI GU
06/30/2026
Special inspection requirement — Structural Steel - Details
XIONGCAI GU
06/30/2026
Special inspection requirement — Structural Steel - High Strength Bolting
XIONGCAI GU
06/30/2026
Special inspection requirement — Structural Steel - Welding
XIONGCAI GU
06/30/2026
Special inspection requirement — Post-installed Anchors
XIONGCAI GU
06/29/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
HORIZONTAL EXTENSION OF THE EXISTING 2-STORY DETACHED ONE-FAMILY WITH CELLAR AND ATTIC. INTERIOR AND EXTERIOR WORK AS PER PLANS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01368279-S3
06/01/2026
Special inspection requirement — Final
DENIS PORTAEV
06/01/2026
Special inspection requirement — Footing and Foundation
XIONGCAI GU
05/28/2026
Special inspection requirement — Final
DENIS PORTAEV
05/05/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
HORIZONTAL EXTENSION OF THE EXISTING 2-STORY DETACHED ONE-FAMILY WITH CELLAR AND ATTIC. INTERIOR AND EXTERIOR WORK AS PER PLANS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01368279-S1
05/04/2026
Special inspection requirement — HVAC-R and service water heating system controls
XIONGCAI GU
05/04/2026
Special inspection requirement — Energy Code Compliance Inspections
XIONGCAI GU
05/04/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
XIONGCAI GU
05/04/2026
Special inspection requirement — Maintenance information
XIONGCAI GU
05/04/2026
Special inspection requirement — HVAC-R and service water heating equipment
XIONGCAI GU
05/04/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIONGCAI GU
04/15/2026
Filed — Alteration
B01385633-I1
04/14/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
HORIZONTAL EXTENSION OF THE EXISTING 2-STORY DETACHED ONE-FAMILY WITH CELLAR AND ATTIC. INTERIOR AND EXTERIOR WORK AS PER PLANS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01368279-S2
04/10/2026
Objection resolved — Addressed
04/10/2026
Objection resolved — Resolved
04/10/2026
Objection resolved — Addressed
04/10/2026
Objection resolved — Addressed
04/01/2026
Objection raised — Other
03/31/2026
Objection raised — Zoning
03/31/2026
Objection raised — Energy
03/31/2026
Objection raised — Cost
03/26/2026
Objection raised — Scope
03/21/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
HORIZONTAL EXTENSION OF THE EXISTING 2-STORY DETACHED ONE-FAMILY WITH CELLAR AND ATTIC. INTERIOR AND EXTERIOR WORK AS PER PLANS. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01368279-I1
03/20/2026
Special inspection requirement — Air barrier — testing
XIONGCAI GU
03/20/2026
Special inspection requirement — Electric vehicle service equipment requirements
XIONGCAI GU
Latest 60 of 63 events.
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
02/10/2026$2.1M—— → —$729/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
A & T ENGINEERING, P.C.407/02/2026
TANG STUDIO ARCHITECT, LLC405/05/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
LT PRO CONSTRUCTION INCGeneral Contractor609/16/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
G ENGINEERING PC7778607/02/2026
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWFoundationPermit IssuedLT PRO CONSTRUCTION INC09/15/2026
DOB NOWSupport of ExcavationPermit IssuedLT PRO CONSTRUCTION INC08/26/2026
DOB NOWStructuralPermit IssuedLT PRO CONSTRUCTION INC07/21/2026
DOB NOWFoundationPermit IssuedLT PRO CONSTRUCTION INC07/21/2026
DOB NOWGeneral ConstructionPermit IssuedLT PRO CONSTRUCTION INC07/20/2026
DOB NOWConstruction FencePermit IssuedLT PRO CONSTRUCTION INC07/13/2026
▾Field Inspections (DOB CAP) — 1
DateTypeResultReport
08/10/2026Under Review Boiler Equipment InspectionUnder ReviewView ↗
▾Special Inspection Requirements (DOB NOW) — 45
DateRequirementInspectorRole
07/02/2026Subsurface Investigations (Borings/Test Pits)—special
07/02/2026Subsurface Investigations (Borings/Test Pits)—special
07/02/2026Excavations - Sheeting, Shoring, and BracingXIONGCAI GUspecial
07/02/2026Post-installed AnchorsXIONGCAI GUspecial
07/02/2026Structural Stability – Alterations of existing buildingsXIONGCAI GUspecial
07/02/2026Structural Steel - WeldingXIONGCAI GUspecial
07/02/2026UnderpinningXIONGCAI GUspecial
06/30/2026Concrete - Cast-In-PlaceXIONGCAI GUspecial
06/30/2026DemolitionXIONGCAI GUspecial
06/30/2026MasonryXIONGCAI GUspecial
06/30/2026Structural Cold-Formed SteelXIONGCAI GUspecial
06/30/2026Structural Stability – Alterations of existing buildingsXIONGCAI GUspecial
06/30/2026Structural Steel - DetailsXIONGCAI GUspecial
06/30/2026Structural Steel - High Strength BoltingXIONGCAI GUspecial
06/30/2026Structural Steel - WeldingXIONGCAI GUspecial
06/30/2026Post-installed AnchorsXIONGCAI GUspecial
06/01/2026FinalDENIS PORTAEVprogress
06/01/2026Footing and FoundationXIONGCAI GUprogress
05/28/2026FinalDENIS PORTAEVprogress
05/04/2026HVAC-R and service water heating system controlsXIONGCAI GUenergy_progress
05/04/2026Energy Code Compliance InspectionsXIONGCAI GUprogress
05/04/2026HVAC-R and service water piping design and insulationXIONGCAI GUenergy_progress
05/04/2026Maintenance informationXIONGCAI GUenergy_progress
05/04/2026HVAC-R and service water heating equipmentXIONGCAI GUenergy_progress
05/04/2026Fire-Resistant Penetrations and JointsXIONGCAI GUspecial
Latest 25 of 45.
▾Documents — 79 on file (BIS + DOB NOW)
▸Plans & Drawings8
▸DOB NOWPlans/Sketch8
08/17/2026B01385633-I1Request digital key ↗
08/17/2026B01368279-S1Request digital key ↗
08/17/2026B01368279-S2Request digital key ↗
Showing 3 of 8 on file for this type
▸Zoning, Tax Lot & Property Records2
▸DOB NOWZD1: DOB Zoning Diagram1
08/15/2026B01368279-I1Open ↗
▸DOB NOWZoning Exhibit form (1-5)1
08/15/2026B01368279-I1Open ↗
▸Seals & Professional Certifications51
▸DOB NOWProgress Inspector Seal & Signature26
09/26/2026B01368279-S4Open ↗
09/01/2026B01368279-I1Open ↗
09/01/2026B01368279-I1Open ↗
Showing 3 of 26 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature17
09/26/2026B01368279-S4Open ↗
09/26/2026B01368279-S4Open ↗
09/26/2026B01368279-S4Open ↗
Showing 3 of 17 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature8
08/17/2026B01385633-I1Open ↗
08/17/2026B01368279-S5Open ↗
08/17/2026B01368279-S6Open ↗
Showing 3 of 8 on file for this type
▸Trade Schedules & Equipment1
▸DOB NOWDEP: Sewer Certification (Sanitary/Storm)1
08/15/2026B01368279-I1Open ↗
▸Environmental & Asbestos6
▸DOB NOWDEP ACP-5: Asbestos Assessment Report6
08/17/2026B01368279-S4Open ↗
08/17/2026B01368279-S1Open ↗
08/17/2026B01368279-S3Open ↗
Showing 3 of 6 on file for this type
▸Inspections & Test Reports6
▸DOB NOWSOIL REPORT3
08/17/2026B01368279-S3Open ↗
08/15/2026B01368279-S5Open ↗
08/14/2026B01368279-S6Open ↗
▸DOB NOWTR4 Test Report and Plot Diagram3
08/17/2026B01368279-S3Open ↗
08/15/2026B01368279-S5Open ↗
08/14/2026B01368279-S6Open ↗
▸Other Documents5
▸DOB NOWAdjoining Owners Notification2
08/17/2026B01368279-S3Open ↗
08/14/2026B01368279-S6Open ↗
▸DOB NOWSite Survey: Initial1
08/15/2026B01368279-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone1
08/15/2026B01368279-I1Open ↗
▸DOB NOWProperty Ownership Certification1
08/15/2026B01368279-I1Open ↗