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Walk-up cooperative
308 EAST 73 STREET
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1910Year Built
5Stories
C6Building Class
R8BZoning
9,000 sfGross Floor Area
14Units
Rent Stabilized2 Open Violations ▸
Walk-up cooperative · Owner of record: MD SQUARED PROPERTY GROUP · 2,554 sf lot · 3.52 FAR built · Flood zone X
Locations of Work
Plumbing
Cellar3p · 1 filing · 13 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
304 EAST 73RD STREET1903/21/2026
EXPERT ENTERPRISES603/21/2026
MD SQUARED PROPERTY GROUP103/22/2026
304 EAST 73 STREET CORP C/O NEW103/21/2026
304 E 73RD STR CORP CO NEWCASTLE103/21/2026
304 EAST 73 STREET CORP C O NEW103/21/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
EAB ARCHITECTURAL DESIGNS, PLLC205/06/2022
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
INTER CONNECTION ELEC INCElectrical203/22/2026
KONSTANTINOS KOSTARIDISElectrical103/21/2026
QEC ELECTRICAL SVCE CORPElectrical103/22/2026
R.J.C. MECHANICAL CORPPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
EAB ARCHITECTURAL DESIGNS4276205/06/2022
Building Lifecycle
All (13)Filed (2)Permit Issued (1)Violation (6)Special Inspection (4)
05/06/2022
Filed — Alteration
PROPOSE PLUMBING FIXTURE IN ASSOCIATION WITH INTERIOR RENOVATIONS.
M00429907-P1
05/06/2022
Special inspection requirement — Fire-Resistant Penetrations and Joints
ERIK BJORNEBY
05/06/2022
Special inspection requirement — Fire-Resistance Rated Construction
ERIK BJORNEBY
05/04/2022
Special inspection requirement — Fire-Resistant Penetrations and Joints
ERIK BJORNEBY
05/04/2022
Special inspection requirement — Fire-Resistance Rated Construction
ERIK BJORNEBY
02/03/2021
Permit issued — Plumbing
M00429907-I1-PL
12/08/2020
Filed — Alteration
PROPOSE PLUMBING FIXTURE IN ASSOCIATION WITH INTERIOR RENOVATIONS.
M00429907-I1
11/06/2017
Violation issued (HPD, closed)
I
02/09/1995
Violation issued (HPD, closed)
B
02/09/1995
Violation issued (HPD, open)
A
02/09/1995
Violation issued (HPD, open)
B
03/18/1994
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
03/18/1993
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingPermit IssuedR.J.C. MECHANICAL CORP02/03/2021
BISPLISSUEDWYNNE PLBG & HEATING CORP10/28/2021
BISOTISSUEDALLMETA CONTRACTING INC12/09/2020
BISPLISSUEDWYNNE PLBG & HEATING CORP05/03/2018
BISOTISSUEDINFINITY MANAGEMENT CORP04/30/2018
BISOTISSUEDPROGENY RESTORATION CORP01/29/2015
BISOTISSUEDBELLET CONSTRUCTION CO.IN06/04/2014
BISEQISSUEDEXPERT ENTERPRISES INC03/13/2014
BISEQISSUEDEXPERT ENTERPRISES INC03/13/2014
BISOTISSUEDBELLET CONSTRUCTION CO.IN06/06/2013
BISEQISSUEDEXPERT ENTERPRISES INC05/17/2013
BISEQISSUEDEXPERT ENTERPRISES INC05/17/2013
BISPLISSUEDDC BUILDING SERVICES INC01/11/2012
BISOTISSUEDCLINT CONTRACTING INC02/04/2011
BISOTISSUEDCLINT CONTRACTING INC02/04/2011
BISOTISSUEDAT CONSTRUCTION GROUP LLC09/20/2010
BISOTISSUEDAT CONSTRUCTION GROUP LLC09/10/2010
BISEQISSUEDEVEREST SCAFFOLDING INC06/18/2010
BISPLISSUEDAUTHENTIC PLBG CORP12/04/2000
BISOTISSUEDMESTA CPNSTRUCTION11/03/2000
1 project · most recent 05/06/2022
Gas Water/Sanitary
FiledStatusContractorScope
05/06/2022Permit IssuedR.J.C. MECHANICAL CORPGas, Water/Sanitary
2 projects · most recent 02/05/2021
General Wiring
FiledStatusContractorScope
02/05/2021Permit IssuedQEC ELECTRICAL SVCE CORPGeneral Wiring
08/30/2018CompleteINTER CONNECTION ELEC INCGeneral Wiring
▾Special Inspection Requirements (DOB NOW) — 4
DateRequirementInspectorRole
05/06/2022Fire-Resistant Penetrations and JointsERIK BJORNEBYspecial
05/06/2022Fire-Resistance Rated ConstructionERIK BJORNEBYprogress
05/04/2022Fire-Resistant Penetrations and JointsERIK BJORNEBYspecial
05/04/2022Fire-Resistance Rated ConstructionERIK BJORNEBYprogress
▾Documents — 143 on file (BIS + DOB NOW)
▸Plans & Drawings3
▸DOB NOWPlans/Sketch - Plumbing3
09/02/2026M00429907-I1Request digital key ↗
09/02/2026M00429907-P1Request digital key ↗
08/15/2026M00429907-P1Request digital key ↗
▸Applications & Permits32
▸BISWORK PERMIT APPLICATION18
10/28/2021140753502Open ↗
12/09/2020140988180Open ↗
05/03/2018140753502Open ↗
Showing 3 of 18 on file for this type
▸BISPLAN / WORK APPROVAL APPLICATION14
03/19/2021140753502Open ↗
03/18/2021140753502Open ↗
12/08/2020140988180Open ↗
Showing 3 of 14 on file for this type
▸Seals & Professional Certifications34
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION10
02/05/2015140080105Open ↗
02/05/2015140080089Open ↗
02/04/2015122105738Open ↗
Showing 3 of 10 on file for this type
▸BISPROFESSIONAL CERTIFICATION STATEMENT5
12/08/2020140988180Open ↗
04/26/2018140753502Open ↗
08/21/2014122105738Open ↗
Showing 3 of 5 on file for this type
▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION4
12/08/2020140988180Open ↗
04/26/2018140753502Open ↗
05/17/2013140080089Open ↗
Showing 3 of 4 on file for this type
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY4
12/08/2020140988180Open ↗
04/26/2018140753502Open ↗
05/17/2013140080089Open ↗
Showing 3 of 4 on file for this type
▸BISPROFESSIONAL CERTIFIED CHECKLIST3
08/21/2014122105738Open ↗
02/07/2011120603329Open ↗
06/21/2010120387946Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM2
02/07/2011120603329Open ↗
06/21/2010120387946Open ↗
▸DOB NOWDPL-1: Design Professional Seal & Signature2
09/02/2026M00429907-I1Open ↗
09/02/2026M00429907-P1Open ↗
▸DOB NOWProgress Inspector Seal & Signature2
08/28/2026M00429907-I1Open ↗
08/27/2026M00429907-P1Open ↗
▸DOB NOWSpecial Inspector Seal & Signature2
08/28/2026M00429907-I1Open ↗
08/27/2026M00429907-P1Open ↗
▸Trade Schedules & Equipment3
▸BISSCHEDULE B - PLUMBING2
04/26/2018140753502Open ↗
02/07/2011120603329Open ↗
▸BISSELF-CERT PLUMBING NOTICE1
03/07/2012120603329Open ↗
▸Safety & Tenant Protection4
▸DOB NOWTenant Protection Plan2
08/13/2026M00429907-I1Open ↗
08/13/2026M00429907-P1Open ↗
▸BISTPP1: TENANT PROTECTION PLAN1
04/23/2021140988180Open ↗
▸BISTENANT PROTECTION PLAN AND NOTES1
04/26/2018140753502Open ↗
▸Environmental & Asbestos11
▸BISASBESTOS: CERTIFICATION (DEP ACP5)6
12/08/2020140988180Open ↗
04/26/2018140753502Open ↗
02/04/2015122105738Open ↗
Showing 3 of 6 on file for this type
▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'2
02/07/2011120603329Open ↗
08/17/2010120442315Open ↗
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
09/02/2026M00429907-I1Open ↗
09/02/2026M00429907-P1Open ↗
▸BISASBESTOS EXEMPTION CERTIFICATION LETTER1
06/21/2010120387946Open ↗
▸Energy Compliance11
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS4
02/04/2015122105738Open ↗
08/21/2014122105738Open ↗
09/10/2012121149042Open ↗
Showing 3 of 4 on file for this type
▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY3
01/06/2022140753502Open ↗
12/08/2020140988180Open ↗
04/26/2018140753502Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY FOR ENERGY CODE PROGRESS INSPECTIONS2
12/08/2020140988180Open ↗
04/26/2018140753502Open ↗
▸BISAS-BUILT ENERGY ANALYSIS1
02/04/2015122105738Open ↗
▸BISAS-BUILT ENERGY ANALYSIS (EN2)1
01/06/2022140753502Open ↗
▸Inspections & Test Reports6
▸BISTECHNICAL REPORT: RESPONSIBILITY6
04/07/2025120426592Open ↗
01/06/2022140753502Open ↗
12/08/2020140988180Open ↗
Showing 3 of 6 on file for this type
▸Approvals, Objections & Sign-offs12
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST5
01/07/2022140753502Open ↗
02/05/2015140080105Open ↗
02/05/2015140080089Open ↗
Showing 3 of 5 on file for this type
▸BISADMINISTRATIVE OBJECTIONS5
07/16/2012121149042Open ↗
02/07/2011120603329Open ↗
08/17/2010120442315Open ↗
Showing 3 of 5 on file for this type
▸BISLETTERS - SUPPORTING DOCUMENTATION2
02/05/2015140080105Open ↗
03/25/2014140080089Open ↗
▸Cost, Insurance & Ownership11
▸BISCOST AFFIDAVIT10
12/08/2020140988180Open ↗
04/26/2018140753502Open ↗
02/04/2015122105738Open ↗
Showing 3 of 10 on file for this type
▸BISCOST AFFIDAVIT (FINAL): PW31
01/06/2022140753502Open ↗
▸Filing & Intake Forms14
▸BISEFILING COVER SHEET7
08/21/2014122105738Open ↗
07/16/2012121149042Open ↗
02/07/2011120603329Open ↗
Showing 3 of 7 on file for this type
▸BISEFILING JOB APPLICATION COVER SHEET4
12/08/2020140988180Open ↗
04/26/2018140753502Open ↗
05/17/2013140080089Open ↗
Showing 3 of 4 on file for this type
▸BISADDITIONAL INFORMATION2
03/19/2021140753502Open ↗
11/05/2011120603329Open ↗
▸BISBOROUGH INTAKE FORM1
10/28/2021140753502Open ↗
▸Other Documents2
▸BISSupporting Document: Fee Exempt1
06/21/2010120387946Open ↗
▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION1
02/07/2011120603329Open ↗