Multi-story retail building (2+)

521 WEST 21 STREET

MANHATTAN · Chelsea-Hudson Yards · BIN 1080298

💬 Discuss this project

1931Year Built

2Stories

K2Building Class

M1-5Zoning

34,600 sfGross Floor Area

7Units

LL97 Covered1 Open Violation ▸

Multi-story retail building (2+) · Owner of record: CHELSEA OPERATING INC. · 17,281 sf lot · 2 FAR built · Flood zone X500

Locations of Work

ArchitectureMechanicalPlumbingEquipmentGeneral

Floor 28p · 2 filings · 20 docs

Floor 13p · 1 filing · 5 docs

▾Owner History (Filing Record)

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

Owner	Filings	Most Recent
J G CONSTRUCTION SRVCS	4	07/08/2026
340 REALTY CORP	2	03/21/2026

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
SCALAR ARCHITECTURE PC	1	08/17/2022
BASIC GROUPS CORP	5	06/30/2021
SYED ENGINEERING, P.C.	1	06/19/2019

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
AE DESIGN SOLUTION	2	03/21/2026
BASIC GROUPS	10	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
A.M.N. CORPORATION	Plumbing	4	07/08/2026
HARD SAFARI CORP	General Contractor	3	03/21/2026
MEIR MAMAN	Electrical	2	03/21/2026
CHARLES, ANDELL	Electrical	1	03/21/2026
DOROWSKY, HARRY	Electrical	1	03/21/2026
J & G CONSTRUCTION SVCS	General Contractor	1	07/08/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
PCMARCHITECTS PLLC	2812	5	06/30/2021

Building Lifecycle

All (35)Filed (7)Permit Issued (5)Violation (11)Special Inspection (12)

04/25/2023

Violation issued (DOB, open)

V-DOB VIOLATION - ACTIVE

09/16/2022

Permit issued — General Construction

M00768613-I1-GC

08/17/2022

Filed — Alteration

M00768613-I1

07/13/2021

Permit issued — Plumbing

M00205875-I1-PL

06/30/2021

Filed — Alteration

REPLACE ONE BOILER ON 002. BOILER WORK TYPE FILED UNDER JOB# 123820446. NO CHANGE IN EGRESS, USE, OR OCCUPANCY

M00205875-P4

05/28/2021

Filed — Alteration

REPLACE ONE BOILER ON 002. BOILER WORK TYPE FILED UNDER JOB# 123820446. NO CHANGE IN EGRESS, USE, OR OCCUPANCY

M00205875-P3

05/28/2021

Special inspection requirement — HVAC and service water heating equipment

Sugnam Chang

05/28/2021

Special inspection requirement — HVAC and service water heating system controls

Sugnam Chang

05/28/2021

Special inspection requirement — Energy Code Compliance Inspections

Sugnam Chang

05/28/2021

Special inspection requirement — Fire-Resistant Penetrations and Joints

Sugnam Chang

09/16/2020

Filed — Alteration

REPLACE ONE BOILER ON 002. BOILER WORK TYPE FILED UNDER JOB# 123820446. NO CHANGE IN EGRESS, USE, OR OCCUPANCY

M00205875-P2

09/16/2020

Special inspection requirement — Fire-Resistant Penetrations and Joints

Sugnam Chang

09/16/2020

Special inspection requirement — Energy Code Compliance Inspections

Sugnam Chang

09/16/2020

Special inspection requirement — HVAC and service water heating equipment

Sugnam Chang

09/16/2020

Special inspection requirement — HVAC and service water heating system controls

Sugnam Chang

08/28/2020

Filed — Alteration

REPLACE ONE BOILER ON 002. BOILER WORK TYPE FILED UNDER JOB# 123820446. NO CHANGE IN EGRESS, USE, OR OCCUPANCY

M00205875-P1

08/28/2020

Special inspection requirement — HVAC and service water heating equipment

Sugnam Chang

08/28/2020

Special inspection requirement — HVAC and service water heating system controls

Sugnam Chang

08/28/2020

Special inspection requirement — Energy Code Compliance Inspections

Sugnam Chang

08/28/2020

Special inspection requirement — Fire-Resistant Penetrations and Joints

Sugnam Chang

06/30/2020

Permit issued — Plumbing

M00205875-I1-PL

06/10/2020

Permit issued — Plumbing

M00205875-I1-PL

12/20/2019

Filed — Alteration

REPLACE ONE BOILER ON 002. BOILER WORK TYPE FILED UNDER JOB# 123820446. NO CHANGE IN EGRESS, USE, OR OCCUPANCY

M00205875-I1

06/20/2019

Permit issued — Sidewalk Shed

M00182086-I1-SH

06/19/2019

Filed — Alteration

PROPOSED INSTALLATION OF HEAVY DUTY SIDEWALK SHED AS PER PLANS. LIVE LOAD 300 LBS PER SQUARE FEET. SIDEWALK SHED SHALL COMPLY WITH CHAPTER #33 OF THE NYC BUILDING CODE. NO CHANGE IN USE, OCCUPANCY, OR EGRESS UNDER THIS APPLICATION.

M00182086-I1

01/31/2005

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

09/23/2002

Violation issued (ECB, closed)

Construction

08/15/2002

Violation issued (ECB, closed)

Signs

03/26/2002

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

02/27/2001

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

02/07/2000

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

05/04/1998

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

11/24/1997

Violation issued (ECB, closed)

Construction

08/29/1995

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

03/18/1993

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	General Construction	Permit Issued	HARD SAFARI CORP	09/16/2022
DOB NOW	Plumbing	Signed-off	A.M.N. CORPORATION	07/13/2021
DOB NOW	Plumbing	Signed-off	A.M.N. CORPORATION	06/30/2020
DOB NOW	Plumbing	Signed-off	A.M.N. CORPORATION	06/10/2020
DOB NOW	Sidewalk Shed	Permit Issued	J & G CONSTRUCTION SVCS	06/20/2019
BIS	OT	ISSUED	AJ GREENWICH CONTRACTING	07/13/2016
BIS	OT	ISSUED	CUB CRAFT LLC	03/22/2016
BIS	OT	ISSUED	ALPHA/OMEGA BUILDING CONS	01/06/2016
BIS	OT	ISSUED	AJ GREENWICH CONTRACTING	02/04/2015
BIS	PL	ISSUED	A.M.N. CORPORATION	02/04/2015
BIS	MH	ISSUED	KEVIN BYRNE ARCHITECTS	04/25/2007
BIS	PL	ISSUED	ARMTECH PLUMBING SYSTEMS CORP	04/10/2006
BIS	OT	ISSUED	ALL BUILDING CONTRACTING CORP	04/03/2006
BIS	OT	ISSUED	ALL BUILDING CONTRACTING CORP	04/03/2006
BIS	MH	ISSUED	ALL BUILDING CONTRACTING CORP	04/03/2006
BIS	PL	ISSUED	A.M.N. CORPORATION	09/14/2005
BIS	MH	ISSUED	A.J. GREENWICH CONTRACTING INC.	08/25/2005
BIS	OT	ISSUED	A.J. GREENWICH CONTRACTING INC.	08/25/2005
BIS	EQ	ISSUED	EUROSTRUCT INC	03/03/2003
BIS	OT	ISSUED	EUROSTRUCT INC	03/03/2003
BIS	PL	ISSUED	A.M.N. CORPORATION	10/11/2002
BIS	MH	ISSUED	AJ GREENWICH CONTRACTING INC	10/09/2002
BIS	MH	ISSUED	WINGS MECHANICAL INC	10/08/1998
BIS	PL	ISSUED	ALJER PLBG & HTG CORP	02/04/1998
BIS	BL	ISSUED	ABRA MECHANICAL SERVICES	12/04/1997
BIS	PL	ISSUED	ABRA MECHANICAL SERVICES	12/04/1997
BIS	PL	ISSUED	AQUA-SYSTEMS	02/21/1995
BIS	—	ISSUED	EMPIRE CONTRACTING CO.	02/09/1995
BIS	BL	ISSUED	NEW UTRECHT FUEL OIL CO INC	10/15/1993

1 project · most recent 06/30/2021

Gas

Filed	Status	Contractor	Scope
06/30/2021	Signed-off	A.M.N. CORPORATION	Gas

1 project · most recent 06/19/2019

Filed	Status	Contractor	Scope
06/19/2019	Permit Issued	RICHARD NEU	—

▾Special Inspection Requirements (DOB NOW) — 12

Date	Requirement	Inspector	Role
05/28/2021	HVAC and service water heating equipment	Sugnam Chang	energy_progress
05/28/2021	HVAC and service water heating system controls	Sugnam Chang	energy_progress
05/28/2021	Energy Code Compliance Inspections	Sugnam Chang	progress
05/28/2021	Fire-Resistant Penetrations and Joints	Sugnam Chang	special
09/16/2020	Fire-Resistant Penetrations and Joints	Sugnam Chang	special
09/16/2020	Energy Code Compliance Inspections	Sugnam Chang	progress
09/16/2020	HVAC and service water heating equipment	Sugnam Chang	energy_progress
09/16/2020	HVAC and service water heating system controls	Sugnam Chang	energy_progress
08/28/2020	HVAC and service water heating equipment	Sugnam Chang	energy_progress
08/28/2020	HVAC and service water heating system controls	Sugnam Chang	energy_progress
08/28/2020	Energy Code Compliance Inspections	Sugnam Chang	progress
08/28/2020	Fire-Resistant Penetrations and Joints	Sugnam Chang	special

▾Tenants in the building

Tenant	Space	Floors	Renovation projects
Paula Cooper Gallery	Office	—	Project M00768613 Alteration · Permit Entire · 08/17/2022

Read from each project’s drawing title blocks and cover sheets and checked twice; a name appears only when it is the occupant, never the owner, landlord or designer.

▾Documents — 167 on file (BIS + DOB NOW)

▸Plans & Drawings7

▸DOB NOWPlans/Sketch - Plumbing5

09/04/2026M00205875-I1Request digital key ↗

08/15/2026M00205875-P2Request digital key ↗

08/15/2026M00205875-P4Request digital key ↗

Showing 3 of 5 on file for this type

▸DOB NOWPlans/Sketch - Sidewalk Shed1

09/05/2026M00182086-I1Request digital key ↗

▸DOB NOWPlans/Sketch1

09/02/2026M00768613-I1Request digital key ↗

▸Applications & Permits24

▸BISPLAN / WORK APPROVAL APPLICATION14

09/26/2019123820446Open ↗

08/07/2019123820446Open ↗

Showing 3 of 14 on file for this type

▸BISWORK PERMIT APPLICATION10

08/27/2019123820446Open ↗

07/23/2019123820446Open ↗

07/12/2016140520327Open ↗

Showing 3 of 10 on file for this type

▸Zoning, Tax Lot & Property Records1

▸BISFLOOD ZONE DESIGN CERTIFICATION1

03/18/2016140472343Open ↗

▸Seals & Professional Certifications45

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION9

08/07/2019123820446Open ↗

09/13/2016140520327Open ↗

03/23/2016122252515Open ↗

Showing 3 of 9 on file for this type

▸DOB NOWProgress Inspector Seal & Signature9

09/01/2026M00205875-P2Open ↗

Showing 3 of 9 on file for this type

▸BISPROFESSIONAL CERTIFIED CHECKLIST7

08/07/2019123820446Open ↗

01/08/2016122624776Open ↗

01/29/2015122252515Open ↗

Showing 3 of 7 on file for this type

▸DOB NOWDPL-1: Design Professional Seal & Signature7

09/05/2026M00182086-I1Open ↗

09/02/2026M00768613-I1Open ↗

08/13/2026M00205875-I1Open ↗

Showing 3 of 7 on file for this type

▸BISPROFESSIONAL CERTIFICATION STATEMENT5

08/07/2019123820446Open ↗

07/12/2016140520327Open ↗

03/18/2016140472343Open ↗

Showing 3 of 5 on file for this type

▸DOB NOWSpecial Inspector Seal & Signature3

09/01/2026M00205875-P2Open ↗

08/26/2026M00205875-P1Open ↗

08/23/2026M00205875-P3Open ↗

▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY2

07/12/2016140520327Open ↗

03/18/2016140472343Open ↗

▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION2

07/12/2016140520327Open ↗

03/18/2016140472343Open ↗

▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM1

08/07/2008110237299Open ↗

▸Trade Schedules & Equipment13

▸BISSELF-CERT PLUMBING NOTICE5

12/21/2015122252515Open ↗

08/27/2015122252515Open ↗

03/10/2015122252515Open ↗

Showing 3 of 5 on file for this type

▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE3

09/26/2019123820446Open ↗

06/12/2015122252515Open ↗

01/29/2015122252515Open ↗

▸BISEQUIPMENT USE PERMITS2

12/03/2013110237299Open ↗

07/30/2013110237299Open ↗

▸BISSCHEDULE B - PLUMBING1

08/07/2008110237299Open ↗

▸BISSCHEDULE C - HEATING & COMBUSTION EQUIPMENT1

07/19/2020123820446Open ↗

▸BISEQUIPMENT USE APPLICATION/PERMIT1

07/30/2013110237299Open ↗

▸Safety & Tenant Protection13

▸DOB NOWHPD-1: Anti-Harassment Area Checklist7

09/05/2026M00182086-I1Open ↗

08/13/2026M00205875-P4Open ↗

08/13/2026M00768613-I1Open ↗

Showing 3 of 7 on file for this type

▸BISHPD-1: Anti-Harassment Area Checklist3

08/07/2008110237299Open ↗

03/18/2016140472343Open ↗

01/29/2015122252515Open ↗

▸BISANTI-HARASSMENT CHECKLIST2

07/12/2016140520327Open ↗

01/05/2016122624776Open ↗

▸BISTENANT PROTECTION PLAN AND NOTES1

03/18/2016140472343Open ↗

▸Environmental & Asbestos13

▸DOB NOWDEP ACP-5: Asbestos Assessment Report6

09/02/2026M00768613-I1Open ↗

08/13/2026M00205875-P4Open ↗

08/13/2026M00205875-P3Open ↗

Showing 3 of 6 on file for this type

▸BISASBESTOS: CERTIFICATION (DEP ACP5)5

08/07/2019123820446Open ↗

07/12/2016140520327Open ↗

03/18/2016140472343Open ↗

Showing 3 of 5 on file for this type

▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'2

08/07/2008110237299Open ↗

▸Energy Compliance14

▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS5

08/07/2019123820446Open ↗

09/13/2016140520327Open ↗

03/23/2016122252515Open ↗

Showing 3 of 5 on file for this type

▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY3

06/09/2021123820446Open ↗

07/12/2016140520327Open ↗

03/18/2016140472343Open ↗

▸BISAS-BUILT ENERGY ANALYSIS3

06/09/2021123820446Open ↗

09/13/2016140520327Open ↗

03/23/2016122252515Open ↗

▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY FOR ENERGY CODE PROGRESS INSPECTIONS2

07/12/2016140520327Open ↗

03/18/2016140472343Open ↗

▸BISNYCECC ANALYSIS1

03/18/2016140472343Open ↗

▸Inspections & Test Reports3

▸BISTECHNICAL REPORT: RESPONSIBILITY3

06/09/2021123820446Open ↗

07/12/2016140520327Open ↗

03/18/2016140472343Open ↗

▸Approvals, Objections & Sign-offs7

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST4

06/09/2021123820446Open ↗

09/13/2016140520327Open ↗

03/23/2016122252515Open ↗

Showing 3 of 4 on file for this type

▸BISLETTERS - SUPPORTING DOCUMENTATION2

09/13/2016140520327Open ↗

07/27/2015122252515Open ↗

▸BISADMINISTRATIVE OBJECTIONS1

08/07/2008110237299Open ↗

▸Cost, Insurance & Ownership10

▸BISCOST AFFIDAVIT10

06/09/2021123820446Open ↗

08/07/2019123820446Open ↗

09/13/2016140520327Open ↗

Showing 3 of 10 on file for this type

▸Filing & Intake Forms15

▸BISADDITIONAL INFORMATION6

09/22/2020123820446Open ↗

09/09/2020123820446Open ↗

12/20/2019123820446Open ↗

Showing 3 of 6 on file for this type

▸BISEFILING COVER SHEET3

08/07/2019123820446Open ↗

01/08/2016122624776Open ↗

01/29/2015122252515Open ↗

▸BISBOROUGH INTAKE FORM3

09/09/2020123820446Open ↗

09/26/2019123820446Open ↗

07/23/2019123820446Open ↗

▸BISEFILING JOB APPLICATION COVER SHEET3

07/12/2016140520327Open ↗

03/18/2016140472343Open ↗

08/07/2008110237299Open ↗

▸Other Documents2

▸DOB NOWMultiple Dwelling Special District Notice to Community Board1

09/05/2026M00182086-I1Open ↗

▸DOB NOWMultiple Dwelling Special District Feasibility of Government Funded Rehabilitation1

09/05/2026M00182086-I1Open ↗