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Miscellaneous two family
223 FROST STREET
BROOKLYN · BIN 3070014
💬 Discuss this project
1899Year Built
3Stories
B9Building Class
R6BZoning
1,980 sfGross Floor Area
2Units
1 Open Violation ▸FDNY Report ↗
Miscellaneous two family · Owner of record: 223 FROST LLC · 2,500 sf lot · 0.79 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralElectricalMechanicalPlumbingFire ProtectionGeneralOther
Permit Issued — active, not yet Signed-off
RoofUnder Construction6p · 3 filings · 20 docs
Bulkhead1p · 1 filing · 20 docs
PenthouseUnder Construction6p · 3 filings · 20 docs
Floor 4Under Construction4p · 3 filings · 20 docs
Floor 3Under Construction5p · 4 filings · 20 docs
Floor 2Under Construction5p · 3 filings · 20 docs
Floor 1Under Construction5p · 3 filings · 20 docs
CellarUnder Construction7p · 2 filings · 20 docs
Basement2p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
223 FROST203/21/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
07/22/2022$1.8M—Private party → 223 FROST LLC$922/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
ADB ASSOCIATES1108/07/2026
SH ENGINEERING PLLC808/06/2024
TECHNEMOTION DESIGN406/09/2024
ARQUITECTURA VARELA205/20/2024
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
HIGHRISE GROUP2203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
BROOKLYN AZ INCGeneral Contractor1807/08/2026
DEEP FORMATION INCGeneral Contractor207/08/2026
RRP PLUMBING CORPFire Protection107/08/2026
VILLAGE P & H NY INCFire Protection107/08/2026
RRP PLUMBING CORPPlumbing107/08/2026
VILLAGE P & H NY INCPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
G ENGINEERING PC77782008/07/2026
ISEED CONSTRUCTION INC8336212/22/2025
Building Lifecycle
All (124)Filed (24)Permit Issued (20)Signed Off (9)Violation (1)Inspection (14)Objection (26)Special Inspection (30)
08/07/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
Mechanical work for a 4 story building with a penthouse.
B00717650-P6
06/12/2026
Signed off — ALT-CO - New Building with Existing Elements to Remain
Mechanical work for a 4 story building with a penthouse.
B00717650-S1
05/08/2026
Special inspection requirement — Protection of exposed foundation insulation
XIONGCAI GU
05/08/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
XIONGCAI GU
05/08/2026
Special inspection requirement — Masonry
XIONGCAI GU
05/08/2026
Special inspection requirement — Fenestration areas
XIONGCAI GU
05/08/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
XIONGCAI GU
05/08/2026
Special inspection requirement — Insulation placement and R values
XIONGCAI GU
05/08/2026
Special inspection requirement — Fenestration air leakage
XIONGCAI GU
05/08/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIONGCAI GU
05/08/2026
Special inspection requirement — Air barrier — testing
XIONGCAI GU
05/08/2026
Special inspection requirement — Air barrier - visual inspection
XIONGCAI GU
05/08/2026
Special inspection requirement — Concrete - Cast-In-Place
XIONGCAI GU
04/20/2026
Inspection — Pass-Final General Construction Non-Directive 14
Pass
View inspection ↗
03/12/2026
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
02/19/2026
Signed off — Alteration
FOUNDATION AND STRUCTURAL FILED IN CONJUNCTION WITH ALTERATION 1 APPLICATION # B00717650. PARTIAL DEMOLITION THROUGHOUT.
B00719497-I1
01/21/2026
Inspection — Fail-Final General Construction Non-Directive 14
Fail
View inspection ↗
12/22/2025
Filed — ALT-CO - New Building with Existing Elements to Remain
Mechanical work for a 4 story building with a penthouse.
B00717650-P5
12/22/2025
Filed — ALT-CO - New Building with Existing Elements to Remain
Mechanical work for a 4 story building with a penthouse.
B00717650-P4
11/24/2025
Violation issued (HPD, open)
I
11/03/2025
Filed — ALT-CO - New Building with Existing Elements to Remain
Mechanical work for a 4 story building with a penthouse.
B00717650-P3
10/29/2025
Permit issued — Mechanical Systems
B00717650-S1-MS
10/24/2025
Special inspection requirement — Fenestration and door U-factor and product ratings
XIONGCAI GU
10/24/2025
Special inspection requirement — Fenestration areas
XIONGCAI GU
10/24/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIONGCAI GU
10/24/2025
Special inspection requirement — Air barrier — testing
XIONGCAI GU
10/24/2025
Special inspection requirement — Fenestration air leakage
XIONGCAI GU
10/24/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
XIONGCAI GU
10/24/2025
Special inspection requirement — Air barrier - visual inspection
XIONGCAI GU
10/24/2025
Special inspection requirement — Protection of exposed foundation insulation
XIONGCAI GU
10/24/2025
Special inspection requirement — Masonry
XIONGCAI GU
10/24/2025
Special inspection requirement — Insulation placement and R values
XIONGCAI GU
10/24/2025
Special inspection requirement — Concrete - Cast-In-Place
XIONGCAI GU
10/09/2025
Signed off — Alteration
Underpinning in conjunction with SE Job #B08002204 and ST/FO #B00719497
B00794100-I1
10/08/2025
Signed off — Alteration
PROPOSED INSTALLATION OF HEAVY DUTY SIDEWALK SHED FOR DEMOLITION PROTECTION AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION. LIVE LOAD 300 PER SQUARE FEET. SIDEWALK SHED SHALL COMPLY WITH CHAPTER # 33 OF THE 2022 CODE.
B00958183-I1
10/07/2025
Signed off — Alteration
B00671673-I1
10/07/2025
Signed off — Alteration
PLUMBING WORK FOR A EXISTING 3 STORY BUILDING TO CONVERT TO A 4 STORY WITH PENTHOUSE BUILDING, 7 DWELLING UNITS. NO CHANGE IN USE, BULK OR EGRESS UNDER THIS APPLICATION.
B00737798-I1
10/07/2025
Signed off — Alteration
INSTALLATION OF NEW SPRINKLER SYSTEM IN CONJUNCTION WITH DOB ALT 1 JOB # B00717650
B00737810-I1
07/23/2025
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
07/23/2025
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
06/29/2025
Signed off — Alteration
B01052842-I1
06/25/2025
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
06/16/2025
Objection resolved — Addressed
06/16/2025
Special inspection requirement — Seismic Isolation Systems
XIONGCAI GU
06/16/2025
Special inspection requirement — Post-installed Anchors
XIONGCAI GU
06/16/2025
Special inspection requirement — Sprinkler Systems
XIONGCAI GU
06/16/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIONGCAI GU
06/10/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIONGCAI GU
06/09/2025
Filed — Alteration
PLUMBING WORK FOR A EXISTING 3 STORY BUILDING TO CONVERT TO A 4 STORY WITH PENTHOUSE BUILDING, 7 DWELLING UNITS. NO CHANGE IN USE, BULK OR EGRESS UNDER THIS APPLICATION.
B00737798-P2
06/05/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
06/03/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIONGCAI GU
05/13/2025
Inspection — Certified Storm Drainage-ST-Fixtures-Finish
Certified
View inspection ↗
05/13/2025
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
05/08/2025
Inspection — Certified Sprinkler-SP-Fixtures-Finish
Certified
View inspection ↗
05/01/2025
Permit issued — Earth Work
B00719497-I1-GC-CX
05/01/2025
Permit issued — Construction Fence
B00671673-I1-FN
04/30/2025
Inspection — Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test
Certified
View inspection ↗
04/18/2025
Special inspection requirement — Lighting in dwelling units
XIONGCAI GU
04/18/2025
Special inspection requirement — HVAC-R and service water heating system controls
XIONGCAI GU
04/04/2025
Objection resolved — Addressed
Latest 60 of 124 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWMechanical SystemsSigned-offBROOKLYN AZ INC10/29/2025
DOB NOWEarth WorkSigned-offBROOKLYN AZ INC05/01/2025
DOB NOWConstruction FenceSigned-offBROOKLYN AZ INC05/01/2025
DOB NOWConstruction FenceSigned-offBROOKLYN AZ INC02/28/2025
DOB NOWGeneral ConstructionPermit IssuedBROOKLYN AZ INC12/03/2024
DOB NOWFoundationSigned-offBROOKLYN AZ INC07/22/2024
DOB NOWSupported ScaffoldSigned-offDEEP FORMATION INC06/11/2024
DOB NOWGeneral ConstructionSigned-offBROOKLYN AZ INC05/31/2024
DOB NOWSprinklersSigned-offRALPH W. LANDOLFI JR.04/22/2024
DOB NOWPlumbingSigned-offRRP PLUMBING CORP04/22/2024
DOB NOWConstruction FenceSigned-offBROOKLYN AZ INC02/29/2024
DOB NOWSprinklersSigned-offVILLAGE P & H NY INC11/14/2023
DOB NOWSidewalk ShedSigned-offDEEP FORMATION INC11/14/2023
DOB NOWPlumbingSigned-offVILLAGE P & H NY INC11/14/2023
DOB NOWGeneral ConstructionPermit IssuedBROOKLYN AZ INC07/27/2023
DOB NOWSupport of ExcavationSigned-offBROOKLYN AZ INC07/06/2023
DOB NOWGeneral ConstructionSigned-offBROOKLYN AZ INC06/08/2023
DOB NOWConstruction FenceSigned-offBROOKLYN AZ INC03/06/2023
DOB NOWStructuralSigned-offBROOKLYN AZ INC01/31/2023
DOB NOWConstruction FenceSigned-offBROOKLYN AZ INC02/18/2022
1 project · most recent 08/07/2026
Heating and Air Conditioning Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
08/07/2026Signed-offBROOKLYN AZ INCHeating and Air Conditioning Systems, Ventilation Systems
Heat / Cool
Daikin 3MXL24WMVJU9 11,500 BTU · Heat Pump Outdoor ×7
5MXS48WVJU9 8,500 BTU · Heat Pump Outdoor ×7
Ventilation
Panasonic XOOTR30BS 20 CFM · Exhaust Fan ×27
1 project · most recent 07/21/2025
General Wiring
FiledStatusContractorScope
07/21/2025CompleteERIC & NG ELEC'L, INC.General Wiring
▾Field Inspections (DOB CAP) — 14
DateTypeResultReport
04/20/2026Pass-Final General Construction Non-Directive 14PassView ↗
03/12/2026Pass-Final CND-Occupancy InspectionPassView ↗
01/21/2026Fail-Final General Construction Non-Directive 14FailView ↗
07/23/2025Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
07/23/2025Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
06/25/2025Pass-Final CND-Occupancy InspectionPassView ↗
06/05/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
05/13/2025Certified Storm Drainage-ST-Fixtures-FinishCertifiedView ↗
05/13/2025Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
05/08/2025Certified Sprinkler-SP-Fixtures-FinishCertifiedView ↗
04/30/2025Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic TestCertifiedView ↗
09/03/2024Pass-Final PL - Up to 9 Requested FloorsPassView ↗
05/16/2024Pass-Final PL - UndergroundPassView ↗
05/10/2024Pass-Final PL - UndergroundPassView ↗
▾Special Inspection Requirements (DOB NOW) — 137
DateRequirementInspectorRole
05/08/2026Fenestration areasXIONGCAI GUenergy_progress
05/08/2026Air barrier - visual inspectionXIONGCAI GUenergy_progress
05/08/2026Protection of exposed foundation insulationXIONGCAI GUenergy_progress
05/08/2026Insulation placement and R valuesXIONGCAI GUenergy_progress
05/08/2026Structural Stability – Alterations of existing buildingsXIONGCAI GUspecial
05/08/2026Fire-Resistant Penetrations and JointsXIONGCAI GUspecial
05/08/2026Concrete - Cast-In-PlaceXIONGCAI GUspecial
05/08/2026MasonryXIONGCAI GUspecial
05/08/2026Fenestration and door U-factor and product ratingsXIONGCAI GUenergy_progress
05/08/2026Air barrier — testing XIONGCAI GUenergy_progress
05/08/2026Fenestration air leakageXIONGCAI GUenergy_progress
10/24/2025Fenestration and door U-factor and product ratingsXIONGCAI GUenergy_progress
10/24/2025Concrete - Cast-In-PlaceXIONGCAI GUspecial
10/24/2025Fire-Resistant Penetrations and JointsXIONGCAI GUspecial
10/24/2025MasonryXIONGCAI GUspecial
10/24/2025Structural Stability – Alterations of existing buildingsXIONGCAI GUspecial
10/24/2025Fenestration areasXIONGCAI GUenergy_progress
10/24/2025Insulation placement and R valuesXIONGCAI GUenergy_progress
10/24/2025Protection of exposed foundation insulationXIONGCAI GUenergy_progress
10/24/2025Air barrier - visual inspectionXIONGCAI GUenergy_progress
10/24/2025Fenestration air leakageXIONGCAI GUenergy_progress
10/24/2025Air barrier — testing XIONGCAI GUenergy_progress
06/16/2025Seismic Isolation SystemsXIONGCAI GUspecial
06/16/2025Fire-Resistant Penetrations and JointsXIONGCAI GUspecial
06/16/2025Sprinkler SystemsXIONGCAI GUspecial
Latest 25 of 137.
▾Documents — 254 on file (BIS + DOB NOW)
▸Plans & Drawings24
▸DOB NOWPlans/Sketch24
08/31/2026B00671673-I1Request digital key ↗
08/31/2026B00671673-P1Request digital key ↗
08/28/2026B00737810-P2Request digital key ↗
Showing 3 of 24 on file for this type
▸Applications & Permits9
▸BISPLAN / WORK APPROVAL APPLICATION6
11/25/2024340900546Open ↗
10/30/2024322119621Open ↗
02/02/2024340900546Open ↗
Showing 3 of 6 on file for this type
▸BISBPP-5 - Authorization to the Department of Transportation3
12/06/2024340900546Open ↗
02/02/2024340900546Open ↗
01/18/2024340900546Open ↗
▸Zoning, Tax Lot & Property Records8
▸DOB NOWZD1: DOB Zoning Diagram6
08/23/2026B00717650-P6Open ↗
08/23/2026B00717650-I1Open ↗
08/23/2026B00717650-P1Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/23/2026B00717650-I1Open ↗
▸DOB NOWZoning Exhibit form (1-5)1
08/23/2026B00717650-P6Open ↗
▸Seals & Professional Certifications150
▸DOB NOWSpecial Inspector Seal & Signature75
09/02/2026B00717650-P3Open ↗
09/02/2026B00717650-P3Open ↗
09/02/2026B00717650-P3Open ↗
Showing 3 of 75 on file for this type
▸DOB NOWProgress Inspector Seal & Signature49
09/02/2026B00717650-P3Open ↗
09/02/2026B00717650-P3Open ↗
09/02/2026B00717650-P3Open ↗
Showing 3 of 49 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature24
08/31/2026B00671673-I1Open ↗
08/31/2026B00671673-P1Open ↗
08/28/2026B00737810-I1Open ↗
Showing 3 of 24 on file for this type
▸BISAPPLICANT OWNER SIGNATURE1
11/14/2023340900546Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY1
11/14/2023340900546Open ↗
▸Safety & Tenant Protection4
▸BISSTREET TREE CHECKLIST2
02/02/2024340900546Open ↗
01/18/2024340900546Open ↗
▸BISBPP: STREET TREES SITE PLAN1
11/14/2023340900546Open ↗
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/23/2026B00717650-I1Open ↗
▸Environmental & Asbestos6
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form6
08/28/2026B00719497-I1Open ↗
08/28/2026B00737798-I1Open ↗
08/23/2026B00717650-I1Open ↗
Showing 3 of 6 on file for this type
▸Energy Compliance3
▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY1
11/14/2023340900546Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY FOR ENERGY CODE PROGRESS INSPECTIONS1
11/14/2023340900546Open ↗
▸DOB NOWEN2: As Built Energy Analysis1
08/23/2026B00717650-I1Open ↗
▸Inspections & Test Reports13
▸DOB NOWSOIL REPORT8
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 8 on file for this type
▸DOB NOWTR4 Test Report and Plot Diagram3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸BISTECHNICAL REPORT: RESPONSIBILITY1
11/14/2023340900546Open ↗
▸DOB NOWTR4 Plot Diagram1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Approvals, Objections & Sign-offs4
▸BISLETTERS - SUPPORTING DOCUMENTATION4
11/07/2024322119621Open ↗
11/07/2024322119621Open ↗
11/07/2024322119621Open ↗
Showing 3 of 4 on file for this type
▸Filing & Intake Forms8
▸BISADDITIONAL INFORMATION4
02/26/2024340900546Open ↗
02/26/2024340900546Open ↗
01/25/2024340900546Open ↗
Showing 3 of 4 on file for this type
▸BISEFILING COVER SHEET2
10/30/2024322119621Open ↗
06/21/2022322108624Open ↗
▸BISEFILING JOB APPLICATION COVER SHEET1
11/14/2023340900546Open ↗
▸BISBPP: CHECKLIST IN LIEU OF PLANS-ALT31
02/26/2024340900546Open ↗
▸Other Documents25
▸DOB NOWSite Survey: Initial6
08/23/2026B00717650-P6Open ↗
08/23/2026B00717650-I1Open ↗
08/23/2026B00717650-P1Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone6
08/23/2026B00717650-P6Open ↗
08/23/2026B00717650-P5Open ↗
08/23/2026B00717650-I1Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWProperty Ownership Certification6
08/23/2026B00717650-P6Open ↗
08/23/2026B00717650-I1Open ↗
08/23/2026B00717650-P1Open ↗
Showing 3 of 6 on file for this type
▸BISBPP - SUPPORTING DOCUMENTATION3
02/02/2024340900546Open ↗
01/25/2024340900546Open ↗
01/18/2024340900546Open ↗
▸DOB NOWAdjoining Owners Notification2
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 2 on file for this type
▸DOB NOWPARTIAL DEMO: 10-DAY Notice1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸DOB NOWFinal Survey1
08/23/2026B00717650-I1Open ↗