Other college and university

Lenfest Hall

425 WEST 121ST STREET · Name © OpenStreetMap contributors · Morningside Heights · BIN 1087901

💬 Discuss this project

2013Year Built

11Stories

W6Building Class

R8Zoning

130,228 sfGross Floor Area

2Units

LL97 CoveredRent Stabilized10 Active Violations 7 unresolved · 3 paperwork only ▸FISP: SAFE

Other college and university · Owner of record: Trustees of Columbia University · 25,669 sf lot · 5.07 FAR built · Flood zone X

Locations of Work

ArchitectureStructuralMechanicalEquipmentGeneral

Names shown beside floors are taken automatically from the text of filed documents and may be incomplete or wrong.

Permit Issued — active, not yet Signed-off

Roof425 W 121st St. & School of Social WorkUnder Construction1p · 2 filings · 7 docs

Floor 1425 W 121st St. & School of Social Work8p · 1 filing · 4 docs

Cellar425 W 121st St. & School of Social Work17p · 6 filings · 16 docs

Site & exterior425 W 121st St. & School of Social WorkUnder Construction12p · 2 filings · 6 docs

▾Owner History (Filing Record)

Companies and organizations named on filings. Individual owners are not shown.

Owner	Filings	Most Recent
Columbia University	106	10/02/2026
CKC Associates LLP C/O FS Restoration	2	03/21/2026
Cumc	1	03/22/2026
Bas Communication	1	03/21/2026

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
Kma Designs	1	04/13/2026
George J. Xerakias, PE	1	02/18/2026
Hoffmann Architects	1	10/31/2025
Environmental Engineering Solutions	6	01/09/2025
Urban Integrations	1	02/11/2021
AKF Engineers	1	01/12/2021

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
HS Design Studio	2	03/21/2026
Environmental Engineering Solutions	7	03/21/2026
United Safety Consultants	1	03/21/2026
Codegreen	1	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
Spring Scaffolding	Scaffold	5	07/08/2026
Kings Group NY	Scaffold	3	10/02/2026
Champion Combustion	General Contractor	2	07/08/2026
JSP Electl CNTNG	Electrical	2	03/21/2026
New Roc Contracting	General Contractor	1	07/08/2026
Lowy & Donnath	Electrical	1	03/21/2026
JSP Electl CNTNG	Electrical	1	03/22/2026
Fresh Meadow Electrical Contracting	Electrical	1	03/21/2026
Walliccan Electrical Contracting	Electrical	1	03/21/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
Cole Technologies/Control	1290	1	10/31/2025
Alan Margolin & Associates	423	3	09/22/2023
Crosscheck Inspection Services	544	1	01/12/2021

Building Lifecycle

All (99)Filed (11)Permit Issued (14)Signed Off (5)Facade (FISP) (9)Violation (43)Inspection (1)Objection (4)Special Inspection (12)

10/01/2026

Permit issued — Sidewalk Shed

M01264941-S1-SH

07/10/2026

Permit issued — Sidewalk Shed

M01264941-S1-SH

05/08/2026

Violation issued (HPD, open)

04/23/2026

Permit issued — Structural

M01264941-I1-GC

04/13/2026

Filed — Alteration

installation of heavy duty sidewalk shed. no change in use, occupancy or egress. all work to comply with chapter 33 of nycbc

M01264941-S1

04/13/2026

Permit issued — Sidewalk Shed

M01264941-S1-SH

04/06/2026

Permit issued — Suspended Scaffold

M01352538-I1-SC

04/01/2026

Objection resolved — Addressed

02/23/2026

Objection raised — Admin

02/18/2026

Filed — Alteration

INSTALLATION OF TEMPORARY SUSPENDED SCAFFOLD EQUIPMENT.

M01352538-I1

01/28/2026

Special inspection requirement — Alternative Materials - OTCR Buildings Bulletin Number

George Xerakias

11/17/2025

Violation issued (HPD, closed)

10/31/2025

Filed — Alteration

installation of heavy duty sidewalk shed. no change in use, occupancy or egress. all work to comply with chapter 33 of nycbc

M01264941-I1

06/13/2025

Violation issued (HPD, open)

02/11/2025

Cycle 9 facade inspection completed

01/09/2025

Filed — Alteration

REGISTRATION AND INSPECTION SIGN-OFF FOR A.O. SMITH HOT WATER BOILER

M01154278-I1

01/09/2025

Filed — Alteration

M01154297-I1

01/09/2025

Filed — Alteration

M01154302-I1

12/31/2024

Cycle 9 facade report signed — SAFE

08/22/2024

Signed off — Alteration

M00933609-I1

08/22/2024

Signed off — Alteration

M00930063-I1

08/22/2024

Signed off — Alteration

M00842400-I1

08/20/2024

Cycle 9 facade report submitted

04/16/2024

Violation issued (HPD, open)

02/22/2024

Violation issued (DOB, open)

V-DOB VIOLATION - ACTIVE

12/18/2023

Inspection — Pass-Final Boiler Equipment Inspection

Pass

View inspection ↗

10/27/2023

Permit issued — Mechanical Systems

M00933609-I1-MS

10/17/2023

Permit issued — Mechanical Systems

M00930063-I1-MS

10/17/2023

Permit issued — Boiler Equipment

M00842400-I1-BE

09/22/2023

Filed — Alteration

M00933609-I1

09/13/2023

Filed — Alteration

M00930063-I1

09/13/2023

Special inspection requirement — Mechanical Systems

Young Suh

09/13/2023

Special inspection requirement — Final

Young Suh

09/06/2023

Special inspection requirement — Mechanical Systems

Young Suh

09/06/2023

Special inspection requirement — Final

Young Suh

08/08/2023

Signed off — Alteration

sidewalk shed installed per plans, no change in use, egress or occupancy

M00467773-I1

06/05/2023

Objection raised — Scope

06/05/2023

Objection resolved — Addressed

06/02/2023

Filed — Alteration

M00842400-I1

04/03/2023

Special inspection requirement — Heating Systems

Young Suh

04/03/2023

Special inspection requirement — Fire-Resistant Penetrations and Joints

Young Suh

04/03/2023

Special inspection requirement — HVAC-R and service water piping design and insulation

Young Suh

04/03/2023

Special inspection requirement — HVAC-R and service water heating equipment

Young Suh

04/03/2023

Special inspection requirement — Maintenance information

Young Suh

03/30/2023

Violation issued (HPD, open)

02/16/2023

Permit issued — Sidewalk Shed

M00467773-I1-SH

11/02/2022

Violation issued (HPD, closed)

10/26/2022

Violation issued (ECB, open)

Boilers

03/09/2022

Violation issued (HPD, open)

02/15/2022

Permit issued — Sidewalk Shed

M00467773-I1-SH

12/30/2021

Signed off — Alteration

THIS APPLICATION IS FILED TO UPGRADE ALL ASSOCIATED PUMP SETS SUPPLY LINE CONNECTING THE FUEL OIL LINE TO THE SOURCES AND TANKS

M00322710-I1

08/31/2021

Permit issued — Boiler Equipment

M00322710-I1-BE

07/16/2021

Permit issued — Boiler Equipment

M00322710-I1-BE

04/19/2021

Violation issued (HPD, open)

03/26/2021

Permit issued — Boiler Equipment

M00322710-I1-BE

02/12/2021

Permit issued — Sidewalk Shed

M00467773-I1-SH

02/11/2021

Filed — Alteration

sidewalk shed installed per plans, no change in use, egress or occupancy

M00467773-I1

01/12/2021

Filed — Alteration

THIS APPLICATION IS FILED TO UPGRADE ALL ASSOCIATED PUMP SETS SUPPLY LINE CONNECTING THE FUEL OIL LINE TO THE SOURCES AND TANKS

M00322710-I1

08/03/2020

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

05/03/2020

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

Latest 60 of 99 events.

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Sidewalk Shed	Permit Issued	Kings Group NY	10/01/2026
DOB NOW	Sidewalk Shed	Permit Issued	Kings Group NY	07/10/2026
DOB NOW	Structural	Permit Issued	New Roc Contracting	04/23/2026
DOB NOW	Sidewalk Shed	Permit Issued	Kings Group NY	04/13/2026
DOB NOW	Suspended Scaffold	Permit Issued	New Roc Contracting	04/06/2026
DOB NOW	Mechanical Systems	Signed-off	Champion Combustion	10/27/2023
DOB NOW	Mechanical Systems	Signed-off	Champion Combustion	10/17/2023
DOB NOW	Boiler Equipment	Signed-off	Champion Combustion	10/17/2023
DOB NOW	Sidewalk Shed	Signed-off	Spring Scaffolding	02/16/2023
DOB NOW	Sidewalk Shed	Signed-off	Spring Scaffolding	02/15/2022
DOB NOW	Boiler Equipment	Signed-off	American Boiler & Welding	08/31/2021
DOB NOW	Boiler Equipment	Signed-off	American Boiler & Welding	07/16/2021
DOB NOW	Boiler Equipment	Signed-off	American Boiler & Welding	03/26/2021
DOB NOW	Sidewalk Shed	Signed-off	Spring Scaffolding	02/12/2021
BIS	OT	ISSUED	Mamais Contracting	07/03/2019
BIS	MH	ISSUED	Crescent Contracting	07/03/2019
BIS	MH	ISSUED	Crescent Contracting	07/03/2019
BIS	FS	ISSUED	Apex Mechanical	07/01/2019
BIS	BL	ISSUED	Apex Mechanical	07/01/2019
BIS	FS	ISSUED	Apex Mechanical	07/01/2019
BIS	PL	ISSUED	Apex Mechanical	07/01/2019
BIS	FS	ISSUED	Apex Mechanical	06/28/2019
BIS	FB	ISSUED	Apex Mechanical	06/28/2019
BIS	FB	ISSUED	Apex Mechanical	06/28/2019
BIS	FS	ISSUED	Apex Mechanical	06/28/2019
BIS	FB	ISSUED	Apex Mechanical	06/28/2019
BIS	BL	ISSUED	Apex Mechanical	06/28/2019
BIS	PL	ISSUED	Apex Mechanical	06/05/2019
BIS	BL	ISSUED	Apex Mechanical	06/04/2019
BIS	FB	ISSUED	Apex Mechanical	06/04/2019
BIS	BL	ISSUED	Apex Mechanical	06/04/2019
BIS	FB	ISSUED	Apex Mechanical	06/04/2019
BIS	FS	ISSUED	Apex Mechanical	06/04/2019
BIS	MH	ISSUED	Crescent Contracting	07/19/2018
BIS	MH	ISSUED	Crescent Contracting	07/09/2018
BIS	MH	ISSUED	Crescent Contracting	07/09/2018
BIS	PL	ISSUED	Apex Mechanical	06/04/2018
BIS	PL	ISSUED	Apex Mechanical	06/04/2018
BIS	BL	ISSUED	Apex Mechanical	06/04/2018
BIS	PL	ISSUED	Apex Mechanical	06/04/2018

+ 24 more permits on file

5 projects · most recent 02/27/2026

Lighting General Wiring

Filed	Status	Contractor	Scope
02/27/2026	Permit Issued	High Quality Electric of NYC	—
11/22/2024	Permit Issued	JSP Electl CNTNG	Lighting
04/05/2024	Permit Issued	JSP Electl CNTNG	Lighting
03/11/2021	Complete	Lowy & Donnath	General Wiring
01/20/2021	Complete	Top Shelf Electric	—

1 project · most recent 04/13/2026

Steel

Filed	Status	Contractor	Scope
04/13/2026	Permit Issued	Kings Group NY	Steel

1 project · most recent 04/13/2026

Sidewalk Shed

Filed	Status	Contractor	Scope
04/13/2026	Permit Issued	Kings Group NY	Sidewalk Shed

1 project · most recent 02/18/2026

Suspended Scaffold (SC)

Filed	Status	Contractor	Scope
02/18/2026	Permit Issued	New Roc Contracting	Suspended Scaffold (SC)

▾Field Inspections (DOB CAP) — 1

Date	Type	Result	Report
12/18/2023	Pass-Final Boiler Equipment Inspection	Pass	View ↗

▾Special Inspection Requirements (DOB NOW) — 12

Date	Requirement	Inspector	Role
01/28/2026	Alternative Materials - OTCR Buildings Bulletin Number	George Xerakias	special
09/13/2023	Mechanical Systems	Young Suh	special
09/13/2023	Final	Young Suh	progress
09/06/2023	Mechanical Systems	Young Suh	special
09/06/2023	Final	Young Suh	progress
04/03/2023	Heating Systems	Young Suh	special
04/03/2023	Fire-Resistant Penetrations and Joints	Young Suh	special
04/03/2023	HVAC-R and service water piping design and insulation	Young Suh	energy_progress
04/03/2023	HVAC-R and service water heating equipment	Young Suh	energy_progress
04/03/2023	Maintenance information	Young Suh	energy_progress
02/26/2020	Fuel-Oil Storage and Fuel-Oil Piping Systems	EUGENE BIFULCO	special
02/26/2020	Fire-Resistant Penetrations and Joints	EUGENE BIFULCO	special

▾Tenants in the building

Tenant	Space	Floors	Renovation projects
425 W 121st St. & School of Social Work	Education	Entire building	Project M01352538 Alteration · Permit Entire · 02/18/2026 Project M01264941 Alteration · Permit Issued · 10/31/2025 Project M01154278 Alteration · Approved · 01/09/2025 Project M01154297 Alteration · Approved · 01/09/2025 Project M01154302 Alteration · Approved · 01/09/2025 Project M00933609 Alteration · LOC Issued · 09/22/2023 Project M00930063 Alteration · LOC Issued · 09/13/2023 Project M00842400 Alteration · LOC Issued · 06/02/2023 Project M00467773 Alteration · LOC Issued · 02/11/2021 Project M00322710 Alteration · LOC Issued · 01/12/2021

Names are taken automatically from the text of each project’s filed documents (title blocks and cover sheets) and screened to exclude owners, landlords and designers. They may be incomplete or wrong; check the filing.

▾Documents — 406 on file (BIS + DOB NOW)

▸Plans & Drawings9

▸DOB NOWPlans/Sketch7

08/29/2026M00930063-I1Request digital key ↗

08/25/2026M01154278-I1Request digital key ↗

08/25/2026M01154302-I1Request digital key ↗

Showing 3 of 7 on file for this type

▸DOB NOWPlans/Sketch - Boiler Equipment1

09/04/2026M00322710-I1Request digital key ↗

▸DOB NOWPlans/Sketch - Sidewalk Shed1

09/04/2026M00467773-I1Request digital key ↗

▸Applications & Permits94

▸BISPLAN / WORK APPROVAL APPLICATION53

10/23/2025122696083Open ↗

04/28/2025122696074Open ↗

04/28/2025122458580Open ↗

Showing 3 of 53 on file for this type

▸BISWORK PERMIT APPLICATION38

08/26/2020103693754Open ↗

08/09/2019123721142Open ↗

07/03/2019123859208Open ↗

Showing 3 of 38 on file for this type

▸BISPLACE OF ASSEMBLY3

12/19/2017103567837Open ↗

12/11/2017103567837Open ↗

12/07/2017103567837Open ↗

▸Seals & Professional Certifications83

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION42

05/20/2020123721142Open ↗

07/03/2019123859208Open ↗

Showing 3 of 42 on file for this type

▸BISPROFESSIONAL CERTIFIED CHECKLIST11

12/14/2018123554509Open ↗

05/16/2017122418687Open ↗

Showing 2 of 11 on file for this type

▸BISPROFESSIONAL CERTIFICATION STATEMENT10

12/14/2018123554509Open ↗

Showing 1 of 10 on file for this type

▸DOB NOWDPL-1: Design Professional Seal & Signature10

09/04/2026M00322710-I1Open ↗

09/04/2026M00467773-I1Open ↗

08/29/2026M00930063-I1Open ↗

Showing 3 of 10 on file for this type

▸DOB NOWSpecial Inspector Seal & Signature6

09/23/2026M00322710-I1Open ↗

09/23/2026M00842400-I1Open ↗

Showing 3 of 6 on file for this type

▸DOB NOWProgress Inspector Seal & Signature3

09/23/2026M00842400-I1Open ↗

09/01/2026M00930063-I1Open ↗

08/25/2026M00933609-I1Open ↗

▸BISProfessional and Owner Certification (POC3)1

On file, but not among the 200 most recently loaded documents for this source.

Showing 0 of 1 on file for this type

▸Trade Schedules & Equipment35

▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE13

05/17/2019123721142Open ↗

12/21/2018122338577Open ↗

12/18/2018122338586Open ↗

Showing 3 of 13 on file for this type

▸BISEQUIPMENT USE APPLICATION/PERMIT5

01/23/2019123554509Open ↗

06/07/2017122418687Open ↗

05/16/2017122418687Open ↗

Showing 3 of 5 on file for this type

▸BISSELF-CERT PLUMBING NOTICE5

On file, but not among the 200 most recently loaded documents for this source.

Showing 0 of 5 on file for this type

▸BISPLUMBING - SUPPORTING DOCUMENTATION5

On file, but not among the 200 most recently loaded documents for this source.

Showing 0 of 5 on file for this type

▸BISSCHEDULE C - HEATING & COMBUSTION EQUIPMENT3

On file, but not among the 200 most recently loaded documents for this source.

Showing 0 of 3 on file for this type

▸BISFA - FDNY APPROVAL : FD-FAA2

01/29/2018122217323Open ↗

06/08/2017122217323Open ↗

▸BISEQUIPMENT USE PERMITS2

01/23/2019123554509Open ↗

06/07/2017122418687Open ↗

▸Environmental & Asbestos11

▸BISASBESTOS: CERTIFICATION (DEP ACP5)7

05/17/2019123721142Open ↗

05/17/2019123859208Open ↗

Showing 2 of 7 on file for this type

▸DOB NOWDEP ACP-5: Asbestos Assessment Report4

08/25/2026M01154278-I1Open ↗

08/21/2026M01264941-I1Open ↗

08/13/2026M01154302-I1Open ↗

Showing 3 of 4 on file for this type

▸Energy Compliance27

▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS21

09/23/2019123859208Open ↗

07/03/2019123859208Open ↗

05/17/2019123859208Open ↗

Showing 3 of 21 on file for this type

▸BISAS-BUILT ENERGY ANALYSIS5

03/22/2019122338586Open ↗

03/22/2019122338577Open ↗

01/28/2019122223726Open ↗

Showing 3 of 5 on file for this type

▸BISTR8: Energy Code Progress Inspections1

On file, but not among the 200 most recently loaded documents for this source.

Showing 0 of 1 on file for this type

▸Inspections & Test Reports6

▸BISTECHNICAL REPORT: RESPONSIBILITY6

08/12/2020123721142Open ↗

Showing 3 of 6 on file for this type

▸Approvals, Objections & Sign-offs26

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST16

05/10/2021102945244Open ↗

08/12/2020123721142Open ↗

08/03/2020123859208Open ↗

Showing 3 of 16 on file for this type

▸DOB NOWFee Exempt Supporting Document - DOF ACRIS report or BIB letter5

09/04/2026M00322710-I1Open ↗

08/13/2026M01264941-S1Open ↗

08/13/2026M01264941-I1Open ↗

Showing 3 of 5 on file for this type

▸BISLETTERS - SUPPORTING DOCUMENTATION4

12/03/2020103030328Open ↗

Showing 1 of 4 on file for this type

▸BISADMINISTRATIVE OBJECTIONS1

On file, but not among the 200 most recently loaded documents for this source.

Showing 0 of 1 on file for this type

▸Cost, Insurance & Ownership32

▸BISCOST AFFIDAVIT32

08/12/2020123721142Open ↗

08/03/2020123859208Open ↗

05/17/2019123721142Open ↗

Showing 3 of 32 on file for this type

▸Filing & Intake Forms63

▸BISBOROUGH INTAKE FORM29

05/20/2020123721142Open ↗

02/25/2020102945244Open ↗

02/03/2020102945244Open ↗

Showing 3 of 29 on file for this type

▸BISEFILING COVER SHEET20

05/17/2019123721142Open ↗

05/17/2019123859208Open ↗

Showing 3 of 20 on file for this type

▸BISADDITIONAL INFORMATION14

05/12/2020123721142Open ↗

05/04/2020123721142Open ↗

09/23/2019123859208Open ↗

Showing 3 of 14 on file for this type

▸Other Documents20

▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION12

12/03/2020103030328Open ↗

05/17/2019123859208Open ↗

12/13/2018123554509Open ↗

Showing 3 of 12 on file for this type

▸BISSupporting Document: Fee Exempt3

On file, but not among the 200 most recently loaded documents for this source.

Showing 0 of 3 on file for this type

▸BISBPP - SUPPORTING DOCUMENTATION1

01/15/2021103030328Open ↗

▸BISTax Abatement Miscellaneous1

05/17/2019123721142Open ↗

▸DOB NOWCalculations1

08/13/2026M01352538-I1Open ↗

▸DOB NOWFee Exempt Supporting Document - DOF Property Tax Assessment Roll1

08/13/2026M00933609-I1Open ↗

▸DOB NOWManufacturer's Specifications1

08/13/2026M01352538-I1Open ↗