Five to six families

356 WEST 21ST STREET

MANHATTAN · BIN 1013277

💬 Discuss this project

1940Year Built

5Stories

C2Building Class

C2-6AZoning

5,720 sfGross Floor Area

5Units

Rent Stabilized0 Active ViolationsFDNY Report ↗

Five to six families · Owner of record: 356 West 21st · 1,604 sf lot · 3.57 FAR built · Flood zone X

Locations of Work

ArchitecturePlumbing

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

Floor 44p · 1 filing · 13 docs

Floor 34p · 1 filing · 13 docs

Floor 24p · 1 filing · 13 docs

Floor 1

▾Owner History (Filing Record)

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

Owner	Filings	Most Recent
356 West 21	18	04/09/2026

▾Sales History (ACRIS)

Date	Price	Unit	Seller → Buyer	$/sf
10/08/2025	$5.0M	—	356 WEST 21ST, LLC → 356 West 21	$874/sf building

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
Atelier New York Architecture	2	01/08/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
Trident Builders Group	General Contractor	1	04/09/2026
Schimenti Construction Co	Plumbing	1	07/08/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
Atelier NY Architecture	2438	2	01/08/2026

Building Lifecycle

All (20)Filed (2)Permit Issued (2)Signed Off (2)Violation (6)Inspection (1)Special Inspection (7)

07/20/2026

Signed off — Alteration

INTERIOR RENOVATION OF APT 2, 3, AND 4. PARTITION CHANGES TO NON-LOAD-BEARING WALLS AS PER PLANS. NO CHANGE IN USE, OCCUPANCY, OR EGRESS.

M01330343-I1

07/20/2026

Signed off — Alteration

INTERIOR RENOVATION OF APT 2, 3, AND 4. PARTITION CHANGES TO NON-LOAD-BEARING WALLS AS PER PLANS. NO CHANGE IN USE, OCCUPANCY, OR EGRESS.

M01330343-S1

04/28/2026

Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing

Certified

View inspection ↗

04/03/2026

Permit issued — General Construction

M01330343-I1-GC

04/03/2026

Permit issued — Plumbing

M01330343-S1-PL

01/08/2026

Filed — Alteration

INTERIOR RENOVATION OF APT 2, 3, AND 4. PARTITION CHANGES TO NON-LOAD-BEARING WALLS AS PER PLANS. NO CHANGE IN USE, OCCUPANCY, OR EGRESS.

M01330343-I1

01/08/2026

Filed — Alteration

INTERIOR RENOVATION OF APT 2, 3, AND 4. PARTITION CHANGES TO NON-LOAD-BEARING WALLS AS PER PLANS. NO CHANGE IN USE, OCCUPANCY, OR EGRESS.

M01330343-S1

12/08/2025

Special inspection requirement — Tenant Protection Plan Compliance

Kenneth Hudes

12/08/2025

Special inspection requirement — Fire-Resistant Penetrations and Joints

Kenneth Hudes

12/08/2025

Special inspection requirement — Final

Kenneth Hudes

12/08/2025

Special inspection requirement — Energy Code Compliance Inspections

Kenneth Hudes

12/08/2025

Special inspection requirement — Fire-Resistance Rated Construction

Kenneth Hudes

12/08/2025

Special inspection requirement — Lighting in dwelling units

Kenneth Hudes

12/08/2025

Special inspection requirement — Tenant Protection Plan Compliance

Kenneth Hudes

11/22/2024

Violation issued (HPD, closed)

04/19/2011

Violation issued (ECB, closed)

Construction

04/19/2011

Violation issued (ECB, closed)

Unknown

01/31/2005

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

03/19/2003

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

09/16/1997

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	General Construction	Signed-off	Trident Builders Group	04/03/2026
DOB NOW	Plumbing	Signed-off	Pipeworks NYC	04/03/2026
BIS	OT	ISSUED	Omnivorous	01/10/2014
BIS	BL	ISSUED	VSP Mechanical	09/20/2013
BIS	PL	ISSUED	VSP Mechanical	09/19/2013
BIS	MH	ISSUED	Gataca Cooling & Heating	09/16/2013
BIS	PL	ISSUED	VSP Mechanical	08/14/2013
BIS	PL	ISSUED	Alient Plumbing & Heating	07/16/2013
BIS	OT	ISSUED	Omnivorous	07/03/2013
BIS	OT	ISSUED	Omnivorous	01/12/2012
BIS	PL	ISSUED	Headquarters Mechanical	10/20/2011
BIS	OT	ISSUED	Omnivorous	09/06/2011
BIS	EQ	ISSUED	LKR Construction	07/19/2011
BIS	OT	ISSUED	Omnivorous	02/11/2011
BIS	PL	ISSUED	Mega Plumbing	01/14/2011
BIS	PL	ISSUED	Safety Plumbing & Heating	09/21/1994
BIS	OT	ISSUED	B.motovich Construction & Mechanical	09/16/1994
BIS	PL	ISSUED	Safety Plumbing & Heating	08/05/1993
BIS	OT	ISSUED	Sense Construction	07/13/1993
BIS	PL	ISSUED	Safety Plumbing & Heating	11/06/1992
BIS	BL	ISSUED	Rpi Mechanical Contracting	11/02/1992
BIS	OT	ISSUED	Sense Construction	06/23/1992
BIS	FB	ISSUED	Ace Atlas	11/01/1990

1 project · most recent 06/04/2026

General Wiring

Filed	Status	Contractor	Scope
06/04/2026	Complete	Danube Electric Co	General Wiring

▾Field Inspections (DOB CAP) — 1

Date	Type	Result	Report
04/28/2026	Certified Water and Sanitary-WS-Sanitary Piping-Roughing	Certified	View ↗

▾Special Inspection Requirements (DOB NOW) — 7

Date	Requirement	Inspector	Role
12/08/2025	Tenant Protection Plan Compliance	Kenneth Hudes	special
12/08/2025	Fire-Resistant Penetrations and Joints	Kenneth Hudes	special
12/08/2025	Final	Kenneth Hudes	progress
12/08/2025	Energy Code Compliance Inspections	Kenneth Hudes	progress
12/08/2025	Fire-Resistance Rated Construction	Kenneth Hudes	progress
12/08/2025	Lighting in dwelling units	Kenneth Hudes	energy_progress
12/08/2025	Tenant Protection Plan Compliance	Kenneth Hudes	special

▾Documents — 143 on file (BIS + DOB NOW)

▸Plans & Drawings2

▸DOB NOWPlans/Sketch2

08/20/2026M01330343-S1Request digital key ↗

08/20/2026M01330343-I1Request digital key ↗

▸Applications & Permits27

▸BISWORK PERMIT APPLICATION14

01/16/2014121700490Open ↗

10/02/2013121767383Open ↗

09/25/2013121767383Open ↗

Showing 3 of 14 on file for this type

▸BISPLAN / WORK APPROVAL APPLICATION13

05/27/2025100500897Open ↗

05/27/2025100131144Open ↗

09/24/2013121700490Open ↗

Showing 3 of 13 on file for this type

▸Seals & Professional Certifications35

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION18

06/05/2014121700490Open ↗

05/01/2014121767383Open ↗

09/20/2013121767383Open ↗

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▸BISPROFESSIONAL CERTIFIED CHECKLIST4

09/11/2013121767383Open ↗

07/09/2013121700490Open ↗

09/15/2011120808741Open ↗

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▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM4

09/11/2013121767383Open ↗

07/09/2013121700490Open ↗

09/15/2011120808741Open ↗

Showing 3 of 4 on file for this type

▸DOB NOWProgress Inspector Seal & Signature4

08/25/2026M01330343-I1Open ↗

Showing 3 of 4 on file for this type

▸DOB NOWSpecial Inspector Seal & Signature3

08/27/2026M01330343-S1Open ↗

08/25/2026M01330343-I1Open ↗

▸DOB NOWDPL-1: Design Professional Seal & Signature2

08/20/2026M01330343-I1Open ↗

08/20/2026M01330343-S1Open ↗

▸Trade Schedules & Equipment23

▸BISSELF-CERT PLUMBING NOTICE8

04/07/2014121767383Open ↗

02/05/2014121700490Open ↗

11/21/2013121700490Open ↗

Showing 3 of 8 on file for this type

▸BISSCHEDULE B - PLUMBING8

09/24/2013121700490Open ↗

09/19/2013121767383Open ↗

09/18/2013121700490Open ↗

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▸BISEQUIPMENT USE APPLICATION/PERMIT3

05/01/2014121767383Open ↗

04/21/2014121767383Open ↗

09/11/2013121767383Open ↗

▸BISSCHEDULE C - HEATING & COMBUSTION EQUIPMENT2

10/15/2013121767383Open ↗

09/11/2013121767383Open ↗

▸BISEQUIPMENT USE PERMITS1

04/21/2014121767383Open ↗

▸BISBOILERS - SUPPORTING DOCUMENTATION1

04/07/2014121767383Open ↗

▸Environmental & Asbestos7

▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'3

09/15/2011120808741Open ↗

10/21/2010120502241Open ↗

▸BISASBESTOS-CERTIFICATION (DEP ACP5)2

07/09/2013121700490Open ↗

09/23/2013121700490Open ↗

▸DOB NOWDEP ACP-5: Asbestos Assessment Report2

08/20/2026M01330343-S1Open ↗

08/20/2026M01330343-I1Open ↗

▸Energy Compliance11

▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS4

06/05/2014121700490Open ↗

05/01/2014121767383Open ↗

09/26/2013121767383Open ↗

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▸BISAS-BUILT ENERGY ANALYSIS3

06/05/2014121700490Open ↗

05/01/2014121767383Open ↗

04/02/2012120808741Open ↗

▸BISTECHNICAL REPORT: ENERGY2

04/02/2012120808741Open ↗

09/15/2011120808741Open ↗

▸BISTR8: Energy Code Progress Inspections2

07/09/2013121700490Open ↗

05/29/2012120502241Open ↗

▸Approvals, Objections & Sign-offs13

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST6

06/05/2014121700490Open ↗

05/01/2014121767383Open ↗

04/11/2013120502241Open ↗

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▸BISADMINISTRATIVE OBJECTIONS3

07/09/2013121700490Open ↗

09/15/2011120808741Open ↗

10/21/2010120502241Open ↗

▸BISLETTERS - SUPPORTING DOCUMENTATION2

06/24/2014120763183Open ↗

08/16/2013121700490Open ↗

▸BISLETTERS - APPROVED FABRICATION CERTIFICATIONS1

04/02/2013120502241Open ↗

▸BISSUPERSEDING LETTER1

08/16/2013121700490Open ↗

▸Cost, Insurance & Ownership10

▸BISCOST AFFIDAVIT10

06/05/2014121700490Open ↗

05/01/2014121767383Open ↗

09/11/2013121767383Open ↗

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▸Filing & Intake Forms14

▸BISADDITIONAL INFORMATION9

04/04/2014121767383Open ↗

02/27/2014121767383Open ↗

02/20/2014121767383Open ↗

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▸BISEFILING COVER SHEET5

09/11/2013121767383Open ↗

07/09/2013121700490Open ↗

09/15/2011120808741Open ↗

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▸Other Documents1

▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION1

04/02/2012120808741Open ↗