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BROOKLYN
112 SCHAEFER STREET
BROOKLYN · BIN 3430467
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—Year Built
—Stories
—Building Class
—Zoning
—Gross Floor Area
—Units
Locations of Work
No floor-level scope or drawing coverage on file for this building.
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
POLAR CONTRACTING109/01/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
SD DESIGN STUDIO LLC1306/18/2026
FL&M ENGINEERING DESIGN &INSPECTION207/14/2025
JUNG Y. SHIN LLC204/28/2021
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
POLAR CONTRACTING INCGeneral Contractor107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
SD TESTING & INSPECTION S7010709/03/2025
J&R DESIGN AND INSPECTION6637203/06/2025
Building Lifecycle
All (79)Filed (17)Permit Issued (16)Signed Off (9)Inspection (8)Objection (2)Special Inspection (27)
07/27/2026
Signed off — Alteration
APPLICATION FILED IN CONJUNCTION WITH JOB # 322070129, TO INSTALL HVAC SYSTEM INDOOR AND OUTDOOR UNITS AS PER PLANS.
B00322509-I1
06/30/2026
Special inspection requirement — Mechanical Systems
XIUCHENG LI
06/30/2026
Special inspection requirement — HVAC insulation and sealing
XIUCHENG LI
06/30/2026
Special inspection requirement — HVAC and service water heating system controls
XIUCHENG LI
06/30/2026
Special inspection requirement — Final
XIUCHENG LI
06/30/2026
Special inspection requirement — Heating Systems
XIUCHENG LI
06/30/2026
Special inspection requirement — HVAC and service water heating equipment
XIUCHENG LI
06/18/2026
Filed — Alteration
APPLICATION FILED IN CONJUNCTION WITH JOB # 322070129, TO INSTALL HVAC SYSTEM INDOOR AND OUTDOOR UNITS AS PER PLANS.
B00322509-P3
06/18/2026
Signed off — Alteration
APPLICATION FILE TO PROPOSE SPRINKLER SYSTEM IN-CONJUNCTION WITH JOB # 322070129
B00322513-I1
06/15/2026
Signed off — Alteration
B01077588-I1
06/15/2026
Signed off — Alteration
APPLICATION FILE TO PROPOSE PLUMBING WORK IN-CONJUNCTION WITH JOB # 322070129
B00322500-I1
04/10/2026
Signed off — Alteration
B00345616-I1
01/14/2026
Signed off — Alteration
B00322506-I1
01/08/2026
Inspection — Certified Sprinkler-SP-Fixtures-Finish
Certified
View inspection ↗
01/06/2026
Inspection — Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test
Certified
View inspection ↗
12/23/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIUCHENG LI
12/23/2025
Special inspection requirement — Sprinkler Systems
XIUCHENG LI
12/05/2025
Filed — Alteration
APPLICATION FILE TO PROPOSE SPRINKLER SYSTEM IN-CONJUNCTION WITH JOB # 322070129
B00322513-P2
12/03/2025
Special inspection requirement — Sprinkler Systems
XIUCHENG LI
12/03/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIUCHENG LI
11/17/2025
Signed off — Alteration
Propose support of excavation involve with new retaining wall in conjunction with NB application. No change occupancy, use, or means of egress.
B01082532-I1
11/17/2025
Permit issued — Mechanical Systems
B00322509-I1-MS
11/12/2025
Permit issued — Support of Excavation
B01082532-I1-SE
11/06/2025
Inspection — Certified Storm Drainage-ST-Piping-Underground
Certified
View inspection ↗
10/01/2025
Permit issued — Construction Fence
B00345616-I1-FN
09/22/2025
Signed off — Alteration
INSTALLATION OF 300 PSF SIDEWALK SHED, PIPE SCAFFOLD AND NEEDLE BEAM AS PER PLANS. ALL EQUIPMENT SHALL COMPLY WITH CHAPTER #33 OF THE 2022 CODE. NO CHANGE IN USE, EGRESS OR OCCUPANCY UNDER THIS APPLICATION.
B01191894-I1
09/15/2025
Inspection — Certified Storm Drainage-ST-Piping-Roughing
Certified
View inspection ↗
09/15/2025
Inspection — Certified Storm Drainage-ST-Piping-Underground
Certified
View inspection ↗
09/15/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
09/15/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
09/12/2025
Objection resolved — Addressed
09/08/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
XIUCHENG LI
09/08/2025
Special inspection requirement — HVAC and service water heating equipment
XIUCHENG LI
09/08/2025
Special inspection requirement — HVAC and service water heating system controls
XIUCHENG LI
09/08/2025
Special inspection requirement — Energy Code Compliance Inspections
XIUCHENG LI
09/03/2025
Filed — Alteration
APPLICATION FILE TO PROPOSE PLUMBING WORK IN-CONJUNCTION WITH JOB # 322070129
B00322500-P2
08/13/2025
Inspection — Pass-Final General Construction Non-Directive 14
Pass
View inspection ↗
07/14/2025
Filed — Alteration
INSTALLATION OF 300 PSF SIDEWALK SHED, PIPE SCAFFOLD AND NEEDLE BEAM AS PER PLANS. ALL EQUIPMENT SHALL COMPLY WITH CHAPTER #33 OF THE 2022 CODE. NO CHANGE IN USE, EGRESS OR OCCUPANCY UNDER THIS APPLICATION.
B01191894-P1
05/19/2025
Permit issued — Sprinklers
B00322513-I1-EW-SP
05/19/2025
Permit issued — Plumbing
B00322500-I1-PL
03/13/2025
Permit issued — Supported Scaffold
B01191894-I1-SF
03/13/2025
Permit issued — Supported Scaffold
B01191894-I1-SH
03/12/2025
Filed — Alteration
INSTALLATION OF 300 PSF SIDEWALK SHED, PIPE SCAFFOLD AND NEEDLE BEAM AS PER PLANS. ALL EQUIPMENT SHALL COMPLY WITH CHAPTER #33 OF THE 2022 CODE. NO CHANGE IN USE, EGRESS OR OCCUPANCY UNDER THIS APPLICATION.
B01191894-I1
03/06/2025
Filed — Alteration
APPLICATION FILE TO PROPOSE SPRINKLER SYSTEM IN-CONJUNCTION WITH JOB # 322070129
B00322513-P1
03/05/2025
Special inspection requirement — Sprinkler Systems
03/05/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
Robert Truskosky
03/03/2025
Filed — Alteration
APPLICATION FILED IN CONJUNCTION WITH JOB # 322070129, TO INSTALL HVAC SYSTEM INDOOR AND OUTDOOR UNITS AS PER PLANS.
B00322509-P1
03/03/2025
Filed — Alteration
APPLICATION FILE TO PROPOSE PLUMBING WORK IN-CONJUNCTION WITH JOB # 322070129
B00322500-P1
02/27/2025
Special inspection requirement — Energy Code Compliance Inspections
Robert Truskosky
02/27/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
Robert Truskosky
02/27/2025
Special inspection requirement — HVAC and service water heating system controls
Robert Truskosky
02/27/2025
Special inspection requirement — HVAC and service water heating equipment
Robert Truskosky
01/21/2025
Permit issued — Foundation
B01077588-I1-FO
01/21/2025
Permit issued — Structural
B00322506-I1-ST
12/05/2024
Special inspection requirement — Post-installed Anchors
12/05/2024
Special inspection requirement — Concrete - Cast-In-Place
12/05/2024
Special inspection requirement — Structural Steel - Welding
12/05/2024
Special inspection requirement — Structural Steel - High Strength Bolting
11/14/2024
Filed — Alteration
B00322506-P1
10/07/2024
Permit issued — Construction Fence
B00345616-I1-FN
Latest 60 of 79 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWMechanical SystemsSigned-offPOLAR CONTRACTING INC11/17/2025
DOB NOWSupport of ExcavationSigned-offGLOBAL TEAM NY INC11/12/2025
DOB NOWConstruction FenceSigned-offGLOBAL TEAM NY INC10/01/2025
DOB NOWSprinklersSigned-offS & L PLUMBING INC05/19/2025
DOB NOWPlumbingSigned-offS & L PLUMBING INC05/19/2025
DOB NOWSupported ScaffoldSigned-offTOPLINE NYC INC03/13/2025
DOB NOWSupported ScaffoldSigned-offTOPLINE NYC INC03/13/2025
DOB NOWFoundationSigned-offPOLAR CONTRACTING INC01/21/2025
DOB NOWStructuralSigned-offPOLAR CONTRACTING INC01/21/2025
DOB NOWConstruction FenceSigned-offGLOBAL TEAM NY INC10/07/2024
DOB NOWConstruction FenceSigned-offGLOBAL TEAM NY INC10/05/2023
DOB NOWConstruction FenceSigned-offGLOBAL TEAM NY INC10/07/2022
DOB NOWSidewalk ShedSigned-offJCM PRO BUILDERS LLC07/05/2022
DOB NOWConstruction FenceSigned-offGLOBAL TEAM NY INC10/19/2021
DOB NOWSidewalk ShedSigned-offJCM PRO BUILDERS LLC05/17/2021
DOB NOWConstruction FenceSigned-offGLOBAL TEAM NY INC01/12/2021
1 project · most recent 06/18/2026
Heating and Air Conditioning Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
06/18/2026Signed-offPOLAR CONTRACTING INCHeating and Air Conditioning Systems, Ventilation Systems
Heat / Cool
Mitsubishi Electric MXZ-3C30NAHZ4 28,400 BTU · Condensing Unit ×6
MXZ-2C20NAHZ4 18,000 BTU · Condensing Unit ×4
Ventilation
Winair BPT14-14A 90 CFM · Exhaust Fan ×17
Samsung ME21DG6700SR 400 CFM ×8
2 projects · most recent 07/24/2026
General Wiring
FiledStatusContractorScope
07/24/2026CompleteKJK ELECTRIC INCGeneral Wiring
03/28/2025CompleteRICHARD NEU—
▾Field Inspections (DOB CAP) — 8
DateTypeResultReport
01/08/2026Certified Sprinkler-SP-Fixtures-FinishCertifiedView ↗
01/06/2026Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic TestCertifiedView ↗
11/06/2025Certified Storm Drainage-ST-Piping-UndergroundCertifiedView ↗
09/15/2025Certified Storm Drainage-ST-Piping-RoughingCertifiedView ↗
09/15/2025Certified Storm Drainage-ST-Piping-UndergroundCertifiedView ↗
09/15/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
09/15/2025Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
08/13/2025Pass-Final General Construction Non-Directive 14PassView ↗
▾Special Inspection Requirements (DOB NOW) — 27
DateRequirementInspectorRole
06/30/2026Mechanical SystemsXIUCHENG LIspecial
06/30/2026HVAC insulation and sealing XIUCHENG LIenergy_progress
06/30/2026HVAC and service water heating system controls XIUCHENG LIenergy_progress
06/30/2026FinalXIUCHENG LIprogress
06/30/2026Heating SystemsXIUCHENG LIspecial
06/30/2026HVAC and service water heating equipment XIUCHENG LIenergy_progress
12/23/2025Fire-Resistant Penetrations and JointsXIUCHENG LIspecial
12/23/2025Sprinkler SystemsXIUCHENG LIspecial
12/03/2025Sprinkler SystemsXIUCHENG LIspecial
12/03/2025Fire-Resistant Penetrations and JointsXIUCHENG LIspecial
09/08/2025Fire-Resistant Penetrations and JointsXIUCHENG LIspecial
09/08/2025HVAC and service water heating equipment XIUCHENG LIenergy_progress
09/08/2025HVAC and service water heating system controls XIUCHENG LIenergy_progress
09/08/2025Energy Code Compliance InspectionsXIUCHENG LIprogress
03/05/2025Sprinkler Systems—special
03/05/2025Fire-Resistant Penetrations and JointsRobert Truskoskyspecial
02/27/2025Energy Code Compliance InspectionsRobert Truskoskyprogress
02/27/2025Fire-Resistant Penetrations and JointsRobert Truskoskyspecial
02/27/2025HVAC and service water heating system controls Robert Truskoskyenergy_progress
02/27/2025HVAC and service water heating equipment Robert Truskoskyenergy_progress
12/05/2024Post-installed Anchors—special
12/05/2024Concrete - Cast-In-Place—special
12/05/2024Structural Steel - Welding—special
12/05/2024Structural Steel - High Strength Bolting—special
08/01/2024FinalXIUCHENG LIprogress
Latest 25 of 27.
▾Documents — 50 on file (BIS + DOB NOW)
▸Plans & Drawings17
▸DOB NOWPlans/Sketch5
09/01/2026B00494820-I1Request digital key ↗
08/24/2026B01077588-I1Request digital key ↗
08/24/2026B01082532-I1Request digital key ↗
Showing 3 of 5 on file for this type
▸DOB NOWPlans/Sketch - Mechanical Systems3
08/22/2026B00322509-P3Request digital key ↗
08/22/2026B00322509-P1Request digital key ↗
08/22/2026B00322509-I1Request digital key ↗
▸DOB NOWPlans/Sketch - Sprinkler3
09/02/2026B00322513-P2Request digital key ↗
09/02/2026B00322513-I1Request digital key ↗
08/15/2026B00322513-P1Request digital key ↗
▸DOB NOWPlans/Sketch - Plumbing3
09/02/2026B00322500-P2Request digital key ↗
09/02/2026B00322500-P1Request digital key ↗
09/02/2026B00322500-I1Request digital key ↗
▸DOB NOWPlans/Sketch - Structural2
09/02/2026B00322506-I1Request digital key ↗
08/15/2026B00322506-P1Request digital key ↗
▸DOB NOWPlans/Sketch - Construction Fence1
09/02/2026B00345616-I1Request digital key ↗
▸Seals & Professional Certifications33
▸DOB NOWDPL-1: Design Professional Seal & Signature19
09/01/2026B00494820-I1Open ↗
08/24/2026B01077588-I1Open ↗
08/24/2026B01082532-I1Open ↗
Showing 3 of 19 on file for this type
▸DOB NOWProgress Inspector Seal & Signature8
08/27/2026B00322506-P1Open ↗
08/25/2026B00322500-I1Open ↗
08/25/2026B00322500-I1Open ↗
Showing 3 of 8 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature6
08/28/2026B00322513-I1Open ↗
08/27/2026B00322506-P1Open ↗
08/25/2026B00322500-I1Open ↗
Showing 3 of 6 on file for this type