Condo, residential tower (mixed-use, multi-family elevator) [derived]

High Line 23 Condominium

515 WEST 23 STREET · Chelsea-Hudson Yards · BIN 1088639

💬 Discuss this project

2008Year Built

—Stories

RMBuilding Class

C6-3AZoning

38,807 sfGross Floor Area

18Units

LL97 CoveredRent Stabilized0 Open ViolationsFISP: SAFE

Condo, residential tower (mixed-use, multi-family elevator) [derived] · 3,950 sf lot · 9.82 FAR built · Flood zone X500

Locations of Work

ArchitectureMechanicalPlumbingFire ProtectionGeneralOther

Permit Issued — active, not yet Signed-off

Penthouse29p · 1 filing · 20 docs

Floor 144p · 1 filing · 20 docs

Floor 135p · 1 filing · 20 docs

Floor 12

Floor 11

Floor 10

Floor 9

Floor 8

Floor 726p · 4 filings · 20 docs

Floor 6

Floor 5

Floor 4

Floor 3

Floor 2

Floor 1

CellarUnder Construction5p · 1 filing · 10 docs

Filed — no permit issued4p · 1 filing · 2 docs

▾Owner History (Filing Record)

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

Owner	Filings	Most Recent
23 HIGH LINE	23	03/21/2026
23 HIGH LINE LLC C O ALF NAMAN R	16	03/21/2026
HIGH LINE 23 CONDOMINIUM	7	03/21/2026
23 HIGH LINE.LLC	4	03/21/2026
AKAM ASSOCIATES, INC.	2	08/29/2026

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
NEW AGE ENGINEERING PLLC	1	05/20/2026
JMV CONSULTING ENGINEERING	4	01/08/2024
CES ENGINEERING LLC	4	12/20/2023
TAHIR DEMIRCIOGLU ARCHITECT PLLC	2	12/18/2023
DANIELLE ALBERT ARCHITECT	2	11/30/2023

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
RESOLUTION EXPEDITING	12	03/21/2026
BUILTIN STUDIO	6	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
K.J. REMODELING OF NY CO*	General Contractor	5	07/08/2026
STONE ATELIER INC	General Contractor	4	07/08/2026
AQUEDUCT MECHANICAL CORP	Plumbing	3	07/08/2026
AQUEDUCT MECHANICAL	Plumbing	3	03/22/2026
BUDGET PLBG & HTG LLC	Plumbing	2	03/22/2026
AQUEDUCT MECHANICAL CORP	Fire Protection	2	07/08/2026
DPH PLUMBING & HTG CORP	Plumbing	1	07/08/2026
PACIFIC PLBG. & HTG. CORP	Fire Protection	1	07/08/2026
ALKLEM PLUMBING INC	Plumbing	1	06/27/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
NEW AGE ENGINEERING PLLC	7746	1	05/20/2026
JMV CONSULTING ENGINEERIN	804	4	01/08/2024
INTEGRITY CONSULTING SERV	666	2	12/18/2023
CES ENGINEERING LLC	1277	2	05/16/2023

Building Lifecycle

All (112)Filed (14)Permit Issued (12)Signed Off (8)Facade (FISP) (3)Violation (16)Inspection (10)Objection (20)Special Inspection (29)

07/20/2026

Filed — Alteration

IRA to assist with Condition Assessment

M01433782-I1

06/24/2026

Permit issued — Plumbing

M01396648-I1-PL

05/20/2026

Filed — Alteration

INSTALL (2) REPLACEMENT HOT WATER HEATERS, (2) STORAGE TANKS AND CONNECT TO EXISTING GAS PIPING AND VENTING AS PER PLANS. NO CHANGE IN USE, OCCUPANCY OR EGRESS.

M01396648-I1

05/20/2026

Special inspection requirement — HVAC-R and service water heating system controls

Stephen Shishko

05/20/2026

Special inspection requirement — Flood Zone Compliance (attach FEMA elevation/dry floodproofing certificate where applicable)

Stephen Shishko

05/19/2026

Special inspection requirement — Energy Code Compliance Inspections

Stephen Shishko

05/19/2026

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

Stephen Shishko

05/19/2026

Special inspection requirement — Maintenance information

Stephen Shishko

05/04/2026

Special inspection requirement — Tenant Protection Plan Compliance

Stephen Shishko

07/15/2025

Signed off — Alteration

RELOCATION OF 3 SPRINKLER HEADS, NO CHANGE IN USE, EGRESS OR OCCUPANCY

M00862429-S3

07/14/2025

Signed off — Alteration

RELOCATION OF 3 SPRINKLER HEADS, NO CHANGE IN USE, EGRESS OR OCCUPANCY

M00862429-S2

07/14/2025

Signed off — Alteration

RELOCATION OF 3 SPRINKLER HEADS, NO CHANGE IN USE, EGRESS OR OCCUPANCY

M00862429-S1

07/10/2025

Signed off — Alteration

RELOCATION OF 3 SPRINKLER HEADS, NO CHANGE IN USE, EGRESS OR OCCUPANCY

M00862429-I1

09/20/2024

Inspection — Certified Sprinkler-SP-Fixtures-Finish

Certified

View inspection ↗

09/19/2024

Inspection — Certified Water and Sanitary-WS-Fixtures-Finish

Certified

View inspection ↗

09/18/2024

Inspection — Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test

Certified

View inspection ↗

07/22/2024

Permit issued — Plumbing

M00862429-S1-PL

07/22/2024

Permit issued — Sprinklers

M00862429-S3-EW-SP

07/11/2024

Signed off — Alteration

Sprinkler work filed in conjunction with the renovation of an existing dwelling. Architectural, plumbing and mechanical work filed in conjunction with the renovation of an existing dwelling unit. No change of use, occupancy or egress.

M00868485-I1

07/09/2024

Permit issued — General Construction

M00862429-I1-GC

06/11/2024

Signed off — Alteration

Mechanical work filed in conjunction with the renovation of an existing dwelling. Architectural, plumbing and sprinkler work as per plans. No change of use, occupancy or egress.

M00868479-I1

05/01/2024

Signed off — Alteration

Plumbing work filed in conjunction with the renovation of a dwelling unit as per plans. Architectural, plumbing and mechanical work filed under a separate application. No change of use, occupancy of egress.

M00868469-I1

04/01/2024

Signed off — Alteration

RENOVATION OF AN EXISTING APARTMENT AS PER PLANS. MECHANICAL, PLUMBING AND SPRINKLER WORK FILED UNDER SEPARATE APPLICATIONS. NO CHANGE OF USE, OCCUPANCY OR EGRESS.

M00868458-I1

02/20/2024

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

Certified

View inspection ↗

02/14/2024

Inspection — Certified Remove/Cap - work done in accordance with code

Certified

View inspection ↗

02/01/2024

Special inspection requirement — Sprinkler Systems

Joseph Vuto

01/30/2024

Objection resolved — Addressed

01/19/2024

Special inspection requirement — Lighting in dwelling units

ALEKSANDR LEVIN

01/19/2024

Special inspection requirement — Fire-Resistant Penetrations and Joints

ALEKSANDR LEVIN

01/19/2024

Special inspection requirement — Final

ALEKSANDR LEVIN

01/19/2024

Special inspection requirement — Fire-Resistance Rated Construction

ALEKSANDR LEVIN

01/17/2024

Objection raised — Scope

01/08/2024

Filed — Alteration

M00868485-P1

01/03/2024

Objection resolved — Addressed

01/02/2024

Objection raised — Accessibility

12/20/2023

Filed — Alteration

RELOCATION OF 3 SPRINKLER HEADS, NO CHANGE IN USE, EGRESS OR OCCUPANCY

M00862429-P1

12/18/2023

Filed — Alteration

RELOCATION OF 3 SPRINKLER HEADS, NO CHANGE IN USE, EGRESS OR OCCUPANCY

M00862429-P2

12/14/2023

Special inspection requirement — Fire-Resistant Penetrations and Joints

ALEKSANDR LEVIN

12/14/2023

Special inspection requirement — Final

ALEKSANDR LEVIN

12/14/2023

Special inspection requirement — Fire-Resistance Rated Construction

ALEKSANDR LEVIN

12/14/2023

Special inspection requirement — Lighting in dwelling units

ALEKSANDR LEVIN

12/13/2023

Objection resolved — Addressed

12/04/2023

Objection raised — Scope

11/30/2023

Filed — Alteration

RENOVATION OF AN EXISTING APARTMENT AS PER PLANS. MECHANICAL, PLUMBING AND SPRINKLER WORK FILED UNDER SEPARATE APPLICATIONS. NO CHANGE OF USE, OCCUPANCY OR EGRESS.

M00868458-P1

11/16/2023

Inspection — Certified Water and Sanitary-WS-Fixtures-Finish

Certified

View inspection ↗

11/02/2023

Special inspection requirement — Lighting in dwelling units

Danielle Albert

11/02/2023

Special inspection requirement — Sprinkler Systems

Joseph Vuto

11/02/2023

Special inspection requirement — Final

Danielle Albert

10/05/2023

Inspection — Certified Sprinkler-SP-Fixtures-Finish

Certified

View inspection ↗

10/03/2023

Inspection — Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test

Certified

View inspection ↗

09/12/2023

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

Certified

View inspection ↗

09/08/2023

Inspection — Certified Remove/Cap - work done in accordance with code

Certified

View inspection ↗

08/29/2023

Permit issued — Plumbing

M00868469-I1-PL

07/28/2023

Permit issued — Mechanical Systems

M00868479-I1-MS

07/27/2023

Permit issued — Mechanical Systems

M00862429-S2-MS

07/21/2023

Permit issued — General Construction

M00868458-I1-GC

07/20/2023

Permit issued — Plumbing

M00862429-S1-PL

07/20/2023

Permit issued — Sprinklers

M00862429-S3-EW-SP

07/13/2023

Permit issued — General Construction

M00862429-I1-GC

06/30/2023

Permit issued — Sprinklers

M00868485-I1-EW-SP

Latest 60 of 112 events.

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Plumbing	Permit Issued	ALKLEM PLUMBING INC	06/24/2026
DOB NOW	Plumbing	Signed-off	AQUEDUCT MECHANICAL CORP	07/22/2024
DOB NOW	Sprinklers	Signed-off	AQUEDUCT MECHANICAL CORP	07/22/2024
DOB NOW	General Construction	Signed-off	K.J. REMODELING OF NY CO*	07/09/2024
DOB NOW	Plumbing	Signed-off	DPH PLUMBING & HTG CORP	08/29/2023
DOB NOW	Mechanical Systems	Signed-off	STONE ATELIER INC	07/28/2023
DOB NOW	Mechanical Systems	Signed-off	K.J. REMODELING OF NY CO*	07/27/2023
DOB NOW	General Construction	Signed-off	STONE ATELIER INC	07/21/2023
DOB NOW	Plumbing	Signed-off	AQUEDUCT MECHANICAL CORP	07/20/2023
DOB NOW	Sprinklers	Signed-off	AQUEDUCT MECHANICAL CORP	07/20/2023
DOB NOW	General Construction	Signed-off	K.J. REMODELING OF NY CO*	07/13/2023
DOB NOW	Sprinklers	Signed-off	PACIFIC PLBG. & HTG. CORP	06/30/2023
BIS	OT	ISSUED	NEW INDUSTRIES INC	02/05/2018
BIS	OT	ISSUED	REMONT INC	10/27/2014
BIS	SP	ISSUED	R & G MECHANICAL CORP	04/03/2014
BIS	OT	RE-ISSUED	REMONT INC	04/01/2014
BIS	MH	ISSUED	ICEBERG MECHANICAL CORP	04/01/2014
BIS	EQ	ISSUED	CONSIGLI & ASSOCIATES LLC	07/26/2013
BIS	—	ISSUED	CONSIGLI & ASSOCIATES LLC	07/26/2013
BIS	—	ISSUED	CONSIGLI & ASSOCIATES LLC	07/10/2012
BIS	EQ	ISSUED	CONSIGLI & ASSOCIATES LLC	07/05/2012
BIS	EQ	ISSUED	CS BRIDGE CORP	06/29/2012
BIS	EQ	ISSUED	CONSIGLI & ASSOCIATES LLC	12/20/2011
BIS	—	ISSUED	CONSIGLI & ASSOCIATES LLC	12/20/2011
BIS	EQ	ISSUED	EVEREST SCAFFOLDING INC	09/15/2011
BIS	EQ	ISSUED	PERIMETER BRIDGE & SCAFFO	07/07/2011
BIS	EQ	ISSUED	PERIMETER BRIDGE & SCAFFO	06/21/2011
BIS	PL	ISSUED	MAXIMUM MECHANICAL CORP.	02/18/2011
BIS	—	ISSUED	CONSIGLI & ASSOCIATES LLC	11/30/2010
BIS	EQ	ISSUED	CONSIGLI & ASSOCIATES LLC	11/29/2010
BIS	BL	ISSUED	KOFSKY & SON, INC	08/25/2010
BIS	SP	ISSUED	UPRIGHT FIRE PROTCTN LLC	08/17/2010
BIS	SD	ISSUED	UPRIGHT FIRE PROTCTN LLC	06/24/2010
BIS	EQ	ISSUED	PERIMETER BRIDGE & SCAFFO	03/19/2010
BIS	EQ	ISSUED	PERIMETER BRIDGE & SCAFFO	03/16/2010
BIS	PL	ISSUED	MAXIMUM MECHANICAL CORP.	02/19/2010
BIS	SP	ISSUED	UPRIGHT FIRE PROTCTN LLC	08/26/2009
BIS	SD	ISSUED	UPRIGHT FIRE PROTCTN LLC	07/10/2009
BIS	—	ISSUED	CONSIGLI & ASSOCIATES LLC	07/02/2009
BIS	PL	ISSUED	MAXIMUM MECHANICAL CORP.	02/20/2009

+ 17 more permits on file

1 project · most recent 05/20/2026

Gas

Filed	Status	Contractor	Scope
05/20/2026	Permit Issued	ALKLEM PLUMBING INC	Gas

2 projects · most recent 07/20/2023

General Wiring

Filed	Status	Contractor	Scope
07/20/2023	Complete	TOP NOTCH ELECTRIC INC	General Wiring
06/18/2023	Permit Issued	PRUDENT ELECTRIC INC	General Wiring

1 project · most recent 07/20/2026

Filed	Status	Contractor	Scope
07/20/2026	—	—	—

▾Field Inspections (DOB CAP) — 10

Date	Type	Result	Report
09/20/2024	Certified Sprinkler-SP-Fixtures-Finish	Certified	View ↗
09/19/2024	Certified Water and Sanitary-WS-Fixtures-Finish	Certified	View ↗
09/18/2024	Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test	Certified	View ↗
02/20/2024	Certified Water and Sanitary-WS-Sanitary Piping-Roughing	Certified	View ↗
02/14/2024	Certified Remove/Cap - work done in accordance with code	Certified	View ↗
11/16/2023	Certified Water and Sanitary-WS-Fixtures-Finish	Certified	View ↗
10/05/2023	Certified Sprinkler-SP-Fixtures-Finish	Certified	View ↗
10/03/2023	Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test	Certified	View ↗
09/12/2023	Certified Water and Sanitary-WS-Sanitary Piping-Roughing	Certified	View ↗
09/08/2023	Certified Remove/Cap - work done in accordance with code	Certified	View ↗

▾Special Inspection Requirements (DOB NOW) — 29

Date	Requirement	Inspector	Role
05/20/2026	HVAC-R and service water heating system controls	Stephen Shishko	energy_progress
05/20/2026	Flood Zone Compliance (attach FEMA elevation/dry floodproofing certificate where applicable)	Stephen Shishko	special
05/19/2026	Energy Code Compliance Inspections	Stephen Shishko	progress
05/19/2026	HVAC-R and service water heating equipment	Stephen Shishko	energy_progress
05/19/2026	Maintenance information	Stephen Shishko	energy_progress
05/04/2026	Tenant Protection Plan Compliance	Stephen Shishko	special
02/01/2024	Sprinkler Systems	Joseph Vuto	special
01/19/2024	Lighting in dwelling units	ALEKSANDR LEVIN	energy_progress
01/19/2024	Fire-Resistant Penetrations and Joints	ALEKSANDR LEVIN	special
01/19/2024	Final	ALEKSANDR LEVIN	progress
01/19/2024	Fire-Resistance Rated Construction	ALEKSANDR LEVIN	progress
12/14/2023	Fire-Resistant Penetrations and Joints	ALEKSANDR LEVIN	special
12/14/2023	Final	ALEKSANDR LEVIN	progress
12/14/2023	Fire-Resistance Rated Construction	ALEKSANDR LEVIN	progress
12/14/2023	Lighting in dwelling units	ALEKSANDR LEVIN	energy_progress
11/02/2023	Lighting in dwelling units	Danielle Albert	energy_progress
11/02/2023	Sprinkler Systems	Joseph Vuto	special
11/02/2023	Final	Danielle Albert	progress
05/11/2023	Fire-Resistant Penetrations and Joints	Joseph Vuto	special
05/09/2023	HVAC-R and service water heating system controls	Peter Votto	energy_progress
05/09/2023	HVAC-R and service water heating equipment	Peter Votto	energy_progress
05/09/2023	Maintenance information	Peter Votto	energy_progress
05/09/2023	Shutoff dampers	Peter Votto	energy_progress
05/09/2023	HVAC-R and service water piping design and insulation	Peter Votto	energy_progress
05/03/2023	Final	Peter Votto	progress

Latest 25 of 29.

▾Documents — 232 on file (BIS + DOB NOW)

▸Plans & Drawings14

▸DOB NOWPlans/Sketch14

08/28/2026M00862429-S2Request digital key ↗

08/28/2026M00862429-P1Request digital key ↗

08/28/2026M00862429-S3Request digital key ↗

Showing 3 of 14 on file for this type

▸Applications & Permits34

▸BISPLAN / WORK APPROVAL APPLICATION20

11/14/2017123239218Open ↗

02/12/2016104589562Open ↗

07/02/2015104589562Open ↗

Showing 3 of 20 on file for this type

▸BISWORK PERMIT APPLICATION13

02/05/2018123239218Open ↗

11/03/2014121921769Open ↗

04/07/2014121921769Open ↗

Showing 3 of 13 on file for this type

▸BISNon-Directive 14 Construction Sign Off Including Sign Applications1

01/17/2013120826712Open ↗

▸Seals & Professional Certifications83

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION27

05/14/2018123239218Open ↗

11/14/2017123239218Open ↗

Showing 3 of 27 on file for this type

▸DOB NOWProgress Inspector Seal & Signature17

08/31/2026M01396648-I1Open ↗

Showing 3 of 17 on file for this type

▸DOB NOWDPL-1: Design Professional Seal & Signature13

08/31/2026M00868458-P1Open ↗

08/31/2026M00868458-I1Open ↗

08/31/2026M00868469-I1Open ↗

Showing 3 of 13 on file for this type

▸DOB NOWSpecial Inspector Seal & Signature10

09/01/2026M00868485-P1Open ↗

08/31/2026M01396648-I1Open ↗

Showing 3 of 10 on file for this type

▸BISPROFESSIONAL CERTIFIED CHECKLIST7

11/14/2017123239218Open ↗

06/29/2012121132149Open ↗

09/28/2011120826712Open ↗

Showing 3 of 7 on file for this type

▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM7

06/29/2012121132149Open ↗

09/28/2011120826712Open ↗

06/27/2011120730398Open ↗

Showing 3 of 7 on file for this type

▸BISPC FULL REPORT1

12/07/2007110039057Open ↗

▸BISPROFESSIONAL CERTIFICATION STATEMENT1

11/14/2017123239218Open ↗

▸Trade Schedules & Equipment10

▸BISSCHEDULE C - HEATING & COMBUSTION EQUIPMENT5

10/22/2010120107963Open ↗

09/20/2010120107963Open ↗

04/22/2010120107963Open ↗

Showing 3 of 5 on file for this type

▸BISSELF-CERT PLUMBING NOTICE3

04/22/2015121921769Open ↗

02/23/2015121921769Open ↗

07/19/2014121921769Open ↗

▸BISSPRINKLER INSP REPORT : FP-851

02/23/2015121921769Open ↗

▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE1

02/20/2014121921769Open ↗

▸Safety & Tenant Protection16

▸DOB NOWHPD-1: Anti-Harassment Area Checklist13

08/17/2026M01396648-I1Open ↗

08/13/2026M00862429-S2Open ↗

08/13/2026M00862429-S3Open ↗

Showing 3 of 13 on file for this type

▸BISANTI-HARASSMENT CHECKLIST1

08/22/2008110323427Open ↗

▸BISTenant Protection Plan and Notes1

11/14/2017123239218Open ↗

▸BISHPD-1 - Anti-Harassment Area Checklist1

04/25/2011120570523Open ↗

▸Environmental & Asbestos10

▸BISASBESTOS EXEMPTION CERTIFICATION LETTER9

01/05/2011120570523Open ↗

05/06/2010120333754Open ↗

10/08/2009120173819Open ↗

Showing 3 of 9 on file for this type

▸BISACP5 ASBESTOS: CERTIFICATION (DEP ACP5)1

02/20/2014121921769Open ↗

▸Energy Compliance6

▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS4

11/14/2017123239218Open ↗

03/26/2015121921769Open ↗

02/20/2014121921769Open ↗

Showing 3 of 4 on file for this type

▸BISAS-BUILT ENERGY ANALYSIS2

05/14/2018123239218Open ↗

03/26/2015121921769Open ↗

▸Approvals, Objections & Sign-offs28

▸BISADMINISTRATIVE OBJECTIONS13

06/29/2012121132149Open ↗

09/28/2011120826712Open ↗

06/27/2011120730398Open ↗

Showing 3 of 13 on file for this type

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST9

05/14/2018123239218Open ↗

04/15/2015121921769Open ↗

Showing 3 of 9 on file for this type

▸BISLETTERS - SUPPORTING DOCUMENTATION5

08/12/2016104589562Open ↗

04/04/2014121921769Open ↗

07/15/2013121132149Open ↗

Showing 3 of 5 on file for this type

▸DOB NOWFee Exempt Supporting Document - DOF ACRIS report or BIB letter1

08/17/2026M01396648-I1Open ↗

▸Cost, Insurance & Ownership7

▸BISCOST AFFIDAVIT7

05/14/2018123239218Open ↗

11/14/2017123239218Open ↗

03/26/2015121921769Open ↗

Showing 3 of 7 on file for this type

▸Filing & Intake Forms16

▸BISEFILING COVER SHEET12

11/14/2017123239218Open ↗

02/20/2014121921769Open ↗

06/29/2012121132149Open ↗

Showing 3 of 12 on file for this type

▸BISADDITIONAL INFORMATION3

11/13/2014121921769Open ↗

12/07/2010120107963Open ↗

12/10/2009120173819Open ↗

▸BISBOROUGH INTAKE FORM1

05/14/2018123239218Open ↗

▸Other Documents8

▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION7

01/17/2013120826712Open ↗

12/12/2012120333754Open ↗

09/13/2011120107963Open ↗

Showing 3 of 7 on file for this type

▸DOB NOWIRA Certification1

08/16/2026M01433782-I1Open ↗