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Walk-up cooperative
431 WEST 121 STREET
MANHATTAN · Morningside Heights · BIN 1059522
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1920Year Built
6Stories
C6Building Class
R8Zoning
17,034 sfGross Floor Area
27Units
Rent Stabilized49 Open Violations 48 unresolved · 1 paperwork only ▸FISP: SWARMP
Walk-up cooperative · Owner of record: 431 W 121 ST HOUSING DEVELOPME · 3,618 sf lot · 4.71 FAR built · Flood zone X
Locations of Work
ArchitecturePlumbing
Permit Issued — active, not yet Signed-off
Roof1p · 1 filing · 6 docs
Penthouse2p · 1 filing · 6 docs
Floor 69p · 1 filing · 20 docs
Floor 5Under Construction15p · 2 filings · 20 docs
Floor 45p · 3 filings · 16 docs
Floor 3
Floor 2
Floor 1Under Construction11p · 2 filings · 20 docs
Site & exterior12p · 1 filing · 6 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
COLUMBIA UNIVERSITY2703/22/2026
HOUSING DEVELOPMENT FUND CORP.1503/21/2026
431 WEST 121 ST HDFC403/21/2026
C O MERLOT MANAGEMENT303/21/2026
431 W 121ST ST HOUSING DEVELPMN303/21/2026
431 W 121 ST HOUSING DEVELOPME103/22/2026
▾Design Consultants (Architect / Engineer of Record)
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
AYE CONSULTING GROUP1203/21/2026
JENNY FLORES EXPEDITING203/21/2026
GRAND EXPEDITERS NYC203/21/2026
CSR EXPEDITERS203/21/2026
BIG ORANGE EXPEDITING403/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
M&A PROJECTS RESTORATION*General Contractor603/21/2026
MAYANDA HOME IMPROVEMENT*General Contractor603/21/2026
VICI INTERIORS INCGeneral Contractor303/21/2026
P.S.I. MECHANICALPlumbing207/08/2026
ALGOL GROUP INCGeneral Contractor204/09/2026
M & A PROJECTS INCGeneral Contractor203/21/2026
BENJAMIN DREBINElectrical103/21/2026
VMA ELECTRICAL CORP.Electrical103/22/2026
TIMOTHY COLEMAN LICENSEDElectrical103/22/2026
LAURENCE ROBINElectrical103/21/2026
AP PLUMBING & HVAC LLCPlumbing107/08/2026
ALBANORTH CONSTRUCTION C*General Contractor104/09/2026
L.L.G. PLBG & HTG INCPlumbing106/28/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
JD ENGINEERING PC9859102/04/2026
AARON MCDONALD ARCHITECT5118101/30/2026
KEYOWNER ENGINEERING, P.C4817105/28/2025
JONATHAN SINAGUB ARCHITEC8118601/16/2024
AK ENGINEERING PC678206/14/2023
HAMANN ENGINEERING, PLLC4949212/20/2022
DYO DESIGN OFFICE LLC6701101/29/2022
Building Lifecycle
All (158)Filed (15)Permit Issued (13)Signed Off (5)Facade (FISP) (15)Violation (60)Inspection (12)Objection (8)Special Inspection (30)
03/06/2026
Permit issued — General Construction
M01346545-I1-GC
02/20/2026
Permit issued — Plumbing
M01346545-S1-PL
02/19/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
02/19/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
02/10/2026
Permit issued — Plumbing
M01228554-S1-PL
02/04/2026
Filed — Alteration
INTERIOR RENOVATION OF EXISTING FIRST-FLOOR RESTAURANT, INCLUDING NEW EQUIPMENT INSTALLATION, NON-LOAD-BEARING WALLS, LIGHTING UPGRADES, MILLWORK, FINISHES, AND MINOR STOREFRONT CHANGES. NO CHANGE TO THE USE, EGRESS OF OCCUPANCY UNDER THIS APPLICATION.
M01228554-S1
02/01/2026
Special inspection requirement — Energy Code Compliance Inspections
Zhao Deng
02/01/2026
Special inspection requirement — HVAC-R and service water heating system controls
Zhao Deng
02/01/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
Zhao Deng
02/01/2026
Special inspection requirement — Tenant Protection Plan Compliance
Zhao Deng
02/01/2026
Special inspection requirement — HVAC-R and service water heating equipment
Zhao Deng
02/01/2026
Special inspection requirement — Maintenance information
Zhao Deng
02/01/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
Zhao Deng
01/30/2026
Filed — Alteration
HEREBY FILING FOR RENOVATION OF EXISTING APARTMENT 5C LOCATED ON THE FIFTH FLOOR. NO CHANGE TO, USE OCCUPANCY OR EGRESS.
M01346545-S1
01/30/2026
Filed — Alteration
HEREBY FILING FOR RENOVATION OF EXISTING APARTMENT 5C LOCATED ON THE FIFTH FLOOR. NO CHANGE TO, USE OCCUPANCY OR EGRESS.
M01346545-I1
01/14/2026
Special inspection requirement — Lighting in dwelling units
Aaron McDonald
01/14/2026
Special inspection requirement — Energy Code Compliance Inspections
Aaron McDonald
01/14/2026
Special inspection requirement — Final
Aaron McDonald
01/14/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
Aaron McDonald
12/08/2025
Permit issued — General Construction
M01228554-I1-GC
09/18/2025
Permit issued — General Construction
M01228554-I1-GC
05/28/2025
Filed — Alteration
INTERIOR RENOVATION OF EXISTING FIRST-FLOOR RESTAURANT, INCLUDING NEW EQUIPMENT INSTALLATION, NON-LOAD-BEARING WALLS, LIGHTING UPGRADES, MILLWORK, FINISHES, AND MINOR STOREFRONT CHANGES. NO CHANGE TO THE USE, EGRESS OF OCCUPANCY UNDER THIS APPLICATION.
M01228554-I1
05/24/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
KWAMI AVITY
05/24/2025
Special inspection requirement — Energy Code Compliance Inspections
KWAMI AVITY
05/24/2025
Special inspection requirement — Fire-Resistance Rated Construction
KWAMI AVITY
05/24/2025
Special inspection requirement — Fenestration and door U-factor and product ratings
KWAMI AVITY
05/24/2025
Special inspection requirement — Interior lighting power
KWAMI AVITY
05/24/2025
Special inspection requirement — Insulation placement and R values
KWAMI AVITY
05/20/2025
Special inspection requirement — Final
KWAMI AVITY
02/25/2025
Violation issued (HPD, open)
B
02/25/2025
Violation issued (HPD, open)
B
02/25/2025
Violation issued (HPD, open)
B
02/25/2025
Violation issued (HPD, open)
C
02/25/2025
Violation issued (HPD, open)
B
02/25/2025
Violation issued (HPD, open)
C
02/13/2025
Signed off — Alteration
Masonry repair and repointing as well as metal panel removal and reattachment at mechanical bulkhead at roof as plans filed. No change in use egress or occupancy.
M00795557-I1
11/21/2024
Violation issued (HPD, closed)
B
11/21/2024
Violation issued (HPD, closed)
B
09/06/2024
Cycle 9 facade report signed — SWARMP
08/01/2024
Violation issued (ECB, open)
Construction
06/11/2024
Violation issued (ECB, closed)
Construction
06/11/2024
Violation issued (ECB, closed)
Construction
05/25/2024
Violation issued (HPD, closed)
C
05/25/2024
Violation issued (HPD, closed)
C
02/21/2024
Cycle 9 facade report submitted
02/20/2024
Cycle 9 facade report signed — SAFE
02/07/2024
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
02/06/2024
Special inspection requirement — Energy Code Compliance Inspections
JONATHAN SINAGUB
02/06/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
JONATHAN SINAGUB
01/29/2024
Cycle 9 facade inspection completed
01/29/2024
Objection resolved — Addressed
01/25/2024
Objection raised — Scope
01/22/2024
Cycle 9 facade report submitted
01/16/2024
Filed — Alteration
Replacement of kitchen & Bathroom fixtures with new; repairing wall finishes as needed and waterproofing. No partition walls to be removed or added. No change in occupancy, use, or egreess.
M00828642-P4
12/14/2023
Cycle 9 facade inspection completed
12/11/2023
Signed off — Alteration
Replacement of kitchen & Bathroom fixtures with new; repairing wall finishes as needed and waterproofing. No partition walls to be removed or added. No change in occupancy, use, or egreess.
M00828642-I1
11/20/2023
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
11/17/2023
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
11/17/2023
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
10/30/2023
Objection resolved — Addressed
Latest 60 of 158 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionPermit IssuedALBANORTH CONSTRUCTION C*03/06/2026
DOB NOWPlumbingPermit IssuedL.L.G. PLBG & HTG INC02/20/2026
DOB NOWPlumbingPermit IssuedCROSSFIELD PLBG.&HTG02/10/2026
DOB NOWGeneral ConstructionPermit IssuedALGOL GROUP12/08/2025
DOB NOWGeneral ConstructionPermit IssuedALGOL GROUP09/18/2025
DOB NOWGeneral ConstructionSigned-offMAYANDA HOME IMPROVEMENT*06/14/2023
DOB NOWPlumbingSigned-offP.S.I. MECHANICAL06/01/2023
DOB NOWGeneral ConstructionSigned-offM&A PROJECTS RESTORATION*03/01/2023
DOB NOWPlumbingSigned-offP.S.I. MECHANICAL02/14/2023
DOB NOWGeneral ConstructionSigned-offM & A PROJECTS INC02/09/2023
DOB NOWGeneral ConstructionSigned-offMAYANDA HOME IMPROVEMENT*02/01/2023
DOB NOWGeneral ConstructionSigned-offM&A PROJECTS RESTORATION*01/19/2023
DOB NOWGeneral ConstructionSigned-offVICI INTERIORS INC03/23/2022
BISPLISSUEDLEGACY PLUMBING & HTG LLC12/01/2016
BISPLISSUEDENA PLUMBING CORP11/10/2016
BISOTISSUEDJ. CHRISTOPHER INTERIORS11/04/2016
BISOTISSUEDJ. CHRISTOPHER INTERIORS07/19/2016
BISOTISSUEDL & Z RESTORATION CORP03/09/2016
BISPLISSUEDAQUA PLUMBING & HTNG CORP02/16/2016
BISOTISSUEDMC FLEMING GROUP INC07/17/2015
BISOTISSUEDACCURA RESTORATION INC06/30/2014
BISEQISSUEDACCURA RESTORATION INC05/12/2014
BISOTISSUEDACCURA RESTORATION INC05/07/2014
BISEQISSUEDSPRING SCAFFOLDING LLC04/01/2014
BISFPISSUEDMASTER FIRE SYSTEMS, INC07/15/2013
BISEQISSUEDCONSTRUCTION EXPERT INC06/18/2013
BISMHISSUEDCONSTRUCTION EXPERT INC06/18/2013
BISPLISSUEDORION PLUMBING & HTG CORP10/08/2012
BISMHISSUEDCONSTRUCTION EXPERT INC10/08/2012
BISOTISSUEDCONSTRUCTION EXPERT INC09/27/2012
BISEQISSUEDCONSTRUCTION EXPERT INC09/18/2012
BISFPISSUEDNY FIRE LLC09/01/2010
BISEQISSUEDOUTDOOR INSTALLATIONS LLX06/11/2007
BISOTISSUEDAWAL CONTRACTING CO INC05/31/2007
BISOTISSUEDCHM CONTRACTING INC12/12/2005
BISPLISSUEDBAYSID MECHANICAK CORP.10/12/2005
BISPLISSUEDCK PLUMBING & MECH INC10/05/2005
BISOTISSUEDMAMAIS CONTRACTING CORP04/27/2005
BISEQRE-ISSUEDUNIVERSAL BUILD SUPP LLC09/23/2003
BIS—ISSUEDLENDLEASE(US)CONSTRUCTION07/02/2003
+ 23 more permits on file
2 projects · most recent 01/30/2026
Water/Sanitary Gas
FiledStatusContractorScope
01/30/2026Permit IssuedL.L.G. PLBG & HTG INCWater/Sanitary
01/16/2024Signed-offP.S.I. MECHANICALGas, Water/Sanitary
9 projects · most recent 04/27/2026
General Wiring
FiledStatusContractorScope
04/27/2026Permit IssuedACCURATE ELEC'L CORP.27 meters, 1 new_meters
02/04/2026Permit IssuedROBIN ELECTRICAL CO., INCGeneral Wiring
09/18/2025Permit IssuedACCURATE ELEC'L CORP.General Wiring
08/18/2024Permit IssuedVMA ELECTRICAL CORP.General Wiring
12/11/2023CompleteVMA ELECTRICAL CORP.General Wiring
03/10/2023CompleteVMA ELECTRICAL CORP.General Wiring
02/10/2023Permit IssuedTIMOTHY COLEMAN LICENSEDGeneral Wiring
07/25/2022CompleteJOE ELECTRICAL INCGeneral Wiring
07/25/2019CompleteKJK ELECTRIC INCGeneral Wiring
1 project · most recent 01/16/2024
FiledStatusContractorScope
01/16/2024Signed-offMAYANDA HOME IMPROVEMENT*1 scope_items
▾Field Inspections (DOB CAP) — 12
DateTypeResultReport
02/19/2026Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
02/19/2026Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
02/07/2024Pass-Final PL - Up to 3 Requested FloorsPassView ↗
11/20/2023Pass-Final PL - Up to 3 Requested FloorsPassView ↗
11/17/2023Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
11/17/2023Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
09/14/2023Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
08/31/2023Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
08/29/2023Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
08/29/2023Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
07/24/2023Pass-Final PL - Up to 3 Requested FloorsPassView ↗
04/05/2023Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 34
DateRequirementInspectorRole
02/01/2026Energy Code Compliance InspectionsZhao Dengprogress
02/01/2026HVAC-R and service water heating system controlsZhao Dengenergy_progress
02/01/2026Fire-Resistant Penetrations and JointsZhao Dengspecial
02/01/2026Tenant Protection Plan ComplianceZhao Dengspecial
02/01/2026HVAC-R and service water heating equipmentZhao Dengenergy_progress
02/01/2026Maintenance informationZhao Dengenergy_progress
02/01/2026HVAC-R and service water piping design and insulationZhao Dengenergy_progress
01/14/2026Lighting in dwelling unitsAaron McDonaldenergy_progress
01/14/2026Energy Code Compliance InspectionsAaron McDonaldprogress
01/14/2026FinalAaron McDonaldprogress
01/14/2026Fire-Resistant Penetrations and JointsAaron McDonaldspecial
05/24/2025Fire-Resistant Penetrations and JointsKWAMI AVITYspecial
05/24/2025Energy Code Compliance InspectionsKWAMI AVITYprogress
05/24/2025Fire-Resistance Rated ConstructionKWAMI AVITYprogress
05/24/2025Fenestration and door U-factor and product ratingsKWAMI AVITYenergy_progress
05/24/2025Interior lighting powerKWAMI AVITYenergy_progress
05/24/2025Insulation placement and R valuesKWAMI AVITYenergy_progress
05/20/2025FinalKWAMI AVITYprogress
02/06/2024Energy Code Compliance InspectionsJONATHAN SINAGUBprogress
02/06/2024Fire-Resistant Penetrations and JointsJONATHAN SINAGUBspecial
10/18/2023Energy Code Compliance InspectionsJONATHAN SINAGUBprogress
10/18/2023Fire-Resistant Penetrations and JointsJONATHAN SINAGUBspecial
08/24/2023Fire-Resistant Penetrations and JointsJONATHAN SINAGUBspecial
08/24/2023FinalJONATHAN SINAGUBprogress
08/24/2023Energy Code Compliance InspectionsJONATHAN SINAGUBprogress
Latest 25 of 34.
▾Documents — 196 on file (BIS + DOB NOW)
▸Plans & Drawings15
▸DOB NOWPlans/Sketch15
09/02/2026M00671295-I1Request digital key ↗
09/01/2026M00786772-I1Request digital key ↗
08/31/2026M00828642-S1Request digital key ↗
Showing 3 of 15 on file for this type
▸Applications & Permits29
▸BISWORK PERMIT APPLICATION19
12/15/2016122771508Open ↗
11/16/2016122771508Open ↗
11/14/2016122771508Open ↗
Showing 3 of 19 on file for this type
▸BISPLAN / WORK APPROVAL APPLICATION10
05/24/2016122771508Open ↗
03/08/2016121799492Open ↗
07/16/2015122462049Open ↗
Showing 3 of 10 on file for this type
▸Seals & Professional Certifications73
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION20
01/07/2019103222629Open ↗
03/20/2018122771508Open ↗
05/18/2017121799492Open ↗
Showing 3 of 20 on file for this type
▸DOB NOWProgress Inspector Seal & Signature17
09/01/2026M01228554-I1Open ↗
09/01/2026M01228554-I1Open ↗
08/28/2026M00828642-I1Open ↗
Showing 3 of 17 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature15
09/02/2026M00671295-I1Open ↗
09/01/2026M00786772-I1Open ↗
08/31/2026M00828642-P3Open ↗
Showing 3 of 15 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature9
09/01/2026M01228554-I1Open ↗
08/28/2026M00828642-I1Open ↗
08/28/2026M00828642-S1Open ↗
Showing 3 of 9 on file for this type
▸BISPROFESSIONAL CERTIFIED CHECKLIST3
07/16/2015122462049Open ↗
07/09/2013121700392Open ↗
08/06/2012121174166Open ↗
▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION2
05/12/2014140196918Open ↗
03/28/2014140179081Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT2
05/12/2014140196918Open ↗
03/28/2014140179081Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY2
05/12/2014140196918Open ↗
03/28/2014140179081Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM2
07/09/2013121700392Open ↗
08/06/2012121174166Open ↗
▸BISProfessional and Owner Certification (POC3)1
07/16/2015122462049Open ↗
▸Trade Schedules & Equipment2
▸BISSCHEDULE B - PLUMBING1
08/06/2012121174166Open ↗
▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE1
07/16/2015122462049Open ↗
▸Environmental & Asbestos18
▸DOB NOWDEP ACP-5: Asbestos Assessment Report13
09/02/2026M00671295-I1Open ↗
09/01/2026M00786772-I1Open ↗
08/31/2026M00828642-S1Open ↗
Showing 3 of 13 on file for this type
▸BISASBESTOS: CERTIFICATION (DEP ACP5)2
07/16/2015122462049Open ↗
05/12/2014140196918Open ↗
▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'2
09/14/2010120468243Open ↗
08/26/2010120436625Open ↗
▸BISASBESTOS: COMPLETION OR CLOSEOUT (ACP20/21/5)1
05/18/2017121799492Open ↗
▸Energy Compliance13
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS6
03/20/2018122771508Open ↗
06/16/2016122462049Open ↗
07/22/2015122462049Open ↗
Showing 3 of 6 on file for this type
▸BISAS-BUILT ENERGY ANALYSIS3
03/20/2018122771508Open ↗
05/18/2017121799492Open ↗
06/16/2016122462049Open ↗
▸BISELECTRICAL APPLICATION FOR SIDEWALK SHED LIGHTING1
03/28/2014140179081Open ↗
▸BISTR8: Energy Code Progress Inspections1
05/09/2014121799492Open ↗
▸BISENERGY CODE 1ST REVIEW COMPLETE1
05/18/2017121799492Open ↗
▸DOB NOWEN2: As Built Energy Analysis1
09/02/2026M00671295-I1Open ↗
▸Inspections & Test Reports1
▸BISTECHNICAL REPORT: RESPONSIBILITY1
05/12/2014140196918Open ↗
▸Approvals, Objections & Sign-offs16
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST8
01/07/2019103222629Open ↗
12/28/2018103222656Open ↗
12/28/2018103222647Open ↗
Showing 3 of 8 on file for this type
▸BISADMINISTRATIVE OBJECTIONS4
07/09/2013121700392Open ↗
08/06/2012121174166Open ↗
09/14/2010120468243Open ↗
Showing 3 of 4 on file for this type
▸BISLETTERS - SUPPORTING DOCUMENTATION2
12/15/2016122771508Open ↗
01/31/2011120468243Open ↗
▸DOB NOWFee Exempt Supporting Document - DOF ACRIS report or BIB letter2
08/13/2026M00795557-P1Open ↗
08/13/2026M00795557-I1Open ↗
▸Cost, Insurance & Ownership10
▸BISCOST AFFIDAVIT10
03/20/2018122771508Open ↗
05/18/2017121799492Open ↗
06/16/2016122462049Open ↗
Showing 3 of 10 on file for this type
▸Filing & Intake Forms15
▸BISEFILING COVER SHEET6
07/16/2015122462049Open ↗
10/25/2013121799492Open ↗
07/09/2013121700392Open ↗
Showing 3 of 6 on file for this type
▸BISBOROUGH INTAKE FORM4
01/07/2019103222629Open ↗
12/28/2018103222656Open ↗
12/28/2018103222647Open ↗
Showing 3 of 4 on file for this type
▸BISADDITIONAL INFORMATION3
10/14/2016121799492Open ↗
03/23/2016121799492Open ↗
06/25/2014140179081Open ↗
▸BISEFILING JOB APPLICATION COVER SHEET2
05/12/2014140196918Open ↗
03/28/2014140179081Open ↗
▸Other Documents4
▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION4
05/12/2014140196918Open ↗
05/09/2014121799492Open ↗
03/28/2014140179081Open ↗
Showing 3 of 4 on file for this type