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Walk-up cooperative
71 COLUMBIA STREET
BROOKLYN · BIN 3003193
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1901Year Built
5Stories
C6Building Class
R6AZoning
9,275 sfGross Floor Area
10Units
Rent Stabilized7 Open Violations ▸FDNY Report ↗
Walk-up cooperative · Owner of record: 71 COLUMBIA OWNERS CORP · 2,430 sf lot · 3.82 FAR built · Flood zone X500
Locations of Work
Roof2p · 1 filing · 4 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
HART ST APARTMENTS LLC503/22/2026
71 COLUMBIA OWNERS CORP103/22/2026
VOICESTREAM WIRELESS INC103/21/2026
T-MOBILE103/21/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
A SAXON DESIGN GROUP108/19/2021
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
CCM CONSULTING GROUP, INC.103/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
SQUAN CONSTRUCTION SERVICGeneral Contractor203/21/2026
ANTHONY LENNONElectrical103/21/2026
FRANCIS CUNDARIElectrical103/21/2026
HERMAN, LAWRENCEElectrical103/21/2026
MAHRAJ, MOHAMMADElectrical103/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
R MARSAC CONSULTING LLC329108/19/2021
Building Lifecycle
All (63)Filed (1)Permit Issued (1)Signed Off (1)Violation (60)
02/05/2026
Violation issued (HPD, closed)
C
01/27/2026
Violation issued (HPD, open)
C
01/27/2026
Violation issued (HPD, open)
C
01/27/2026
Violation issued (HPD, open)
C
01/27/2026
Violation issued (HPD, open)
C
02/22/2025
Violation issued (HPD, closed)
C
02/22/2025
Violation issued (HPD, closed)
C
02/19/2025
Violation issued (HPD, closed)
A
02/19/2025
Violation issued (HPD, closed)
B
02/19/2025
Violation issued (HPD, closed)
C
02/19/2025
Violation issued (HPD, closed)
B
02/22/2024
Violation issued (HPD, closed)
C
02/22/2024
Violation issued (HPD, closed)
C
10/07/2023
Violation issued (HPD, closed)
C
10/07/2023
Violation issued (HPD, closed)
C
10/07/2023
Violation issued (HPD, closed)
C
10/07/2023
Violation issued (HPD, closed)
A
08/15/2023
Violation issued (HPD, closed)
B
07/19/2023
Violation issued (HPD, closed)
C
07/19/2023
Violation issued (HPD, open)
C
03/15/2023
Violation issued (HPD, closed)
C
03/15/2023
Violation issued (HPD, closed)
B
03/15/2023
Violation issued (HPD, closed)
B
01/24/2022
Violation issued (HPD, closed)
C
01/13/2022
Signed off — Alteration
B00564012-I1
11/16/2021
Permit issued — Antenna
B00564012-I1-AN
08/19/2021
Filed — Alteration
B00564012-I1
08/13/2021
Violation issued (HPD, closed)
A
08/13/2021
Violation issued (HPD, closed)
A
08/13/2021
Violation issued (HPD, closed)
A
08/13/2021
Violation issued (HPD, closed)
A
08/13/2021
Violation issued (HPD, closed)
A
08/13/2021
Violation issued (HPD, closed)
C
08/13/2021
Violation issued (HPD, closed)
A
12/20/2018
Violation issued (HPD, closed)
B
12/20/2018
Violation issued (HPD, closed)
B
11/23/2018
Violation issued (HPD, closed)
B
08/14/2017
Violation issued (HPD, closed)
A
07/12/2017
Violation issued (HPD, closed)
B
07/12/2017
Violation issued (HPD, closed)
A
07/12/2017
Violation issued (HPD, closed)
B
07/12/2017
Violation issued (HPD, closed)
B
07/12/2017
Violation issued (HPD, closed)
B
07/12/2017
Violation issued (HPD, closed)
A
07/12/2017
Violation issued (HPD, closed)
A
07/12/2017
Violation issued (HPD, closed)
A
07/12/2017
Violation issued (HPD, closed)
C
07/12/2017
Violation issued (HPD, closed)
A
01/04/2016
Violation issued (HPD, closed)
B
09/14/2015
Violation issued (HPD, closed)
C
09/14/2015
Violation issued (HPD, closed)
B
03/14/2015
Violation issued (HPD, closed)
A
06/26/2013
Violation issued (HPD, closed)
B
06/19/2013
Violation issued (HPD, closed)
B
06/15/2013
Violation issued (HPD, closed)
B
06/15/2013
Violation issued (HPD, closed)
A
06/15/2013
Violation issued (HPD, closed)
B
06/10/2013
Violation issued (HPD, closed)
B
06/10/2013
Violation issued (HPD, closed)
C
06/10/2013
Violation issued (HPD, closed)
C
Latest 60 of 63 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWAntennaSigned-offSQUAN CONSTRUCTION SERVIC11/16/2021
BISOTISSUEDRAMAPO COMMUNICATION CORP12/01/2016
BISOTISSUEDAPPLIED ELECTRIC CORP08/02/2001
BISOTISSUEDTARGET INDUSTRIES INC06/20/2001
BISOTISSUEDALLEN TOWER CORPORATION08/28/1996
Nothing on file for this building.
Nothing on file for this building.
▾Documents — 35 on file (BIS + DOB NOW)
▸Plans & Drawings1
▸DOB NOWPlans/Sketch1
09/01/2026B00564012-I1Request digital key ↗
▸Applications & Permits4
▸BISPLAN / WORK APPROVAL APPLICATION3
03/18/2020320889035Open ↗
04/14/2015321104835Open ↗
05/23/2014320889035Open ↗
▸BISWORK PERMIT APPLICATION1
12/05/2016321104835Open ↗
▸Seals & Professional Certifications6
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION5
02/16/2018321104835Open ↗
02/14/2018321104835Open ↗
12/05/2016321104835Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature1
09/01/2026B00564012-I1Open ↗
▸Safety & Tenant Protection1
▸BISANTI-HARASSMENT CHECKLIST: CLINTON1
03/18/2020320889035Open ↗
▸Environmental & Asbestos2
▸BISACP5 ASBESTOS: CERTIFICATION (DEP ACP5)1
05/23/2014320889035Open ↗
▸DOB NOWDEP ACP-5: Asbestos Assessment Report1
09/01/2026B00564012-I1Open ↗
▸Energy Compliance7
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS3
02/16/2018321104835Open ↗
02/14/2018321104835Open ↗
12/05/2016321104835Open ↗
▸BISAS-BUILT ENERGY ANALYSIS2
02/16/2018321104835Open ↗
02/14/2018321104835Open ↗
▸BISTR8: Energy Code Progress Inspections2
05/23/2014320889035Open ↗
05/23/2014320889035Open ↗
▸Approvals, Objections & Sign-offs4
▸BISADMINISTRATIVE OBJECTIONS2
04/14/2015321104835Open ↗
05/23/2014320889035Open ↗
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST2
02/16/2018321104835Open ↗
02/14/2018321104835Open ↗
▸Cost, Insurance & Ownership4
▸BISCOST AFFIDAVIT4
02/16/2018321104835Open ↗
02/14/2018321104835Open ↗
04/14/2015321104835Open ↗
Showing 3 of 4 on file for this type
▸Filing & Intake Forms5
▸BISBOROUGH INTAKE FORM2
02/16/2018321104835Open ↗
02/14/2018321104835Open ↗
▸BISEFILING COVER SHEET2
04/14/2015321104835Open ↗
05/23/2014320889035Open ↗
▸BISADDITIONAL INFORMATION1
12/06/2016321104835Open ↗
▸Other Documents1
▸DOB NOWDHCR Document1
08/13/2026B00564012-I1Open ↗