Office with commercial, 7-19 stories

CBS Studio Building

49 EAST 52ND STREET · Name © OpenStreetMap contributors · BIN 1035712

💬 Discuss this project

1967Year Built

8Stories

O6Building Class

C5-3Zoning

41,837 sfGross Floor Area

1Units

LL97 Covered0 Active ViolationsFISP: SWARMP

Office with commercial, 7-19 stories · Owner of record: Park Avenue Plaza Co · 7,531 sf lot · 5.56 FAR built · Flood zone X

Locations of Work

ArchitectureStructuralFire ProtectionEquipmentGeneral

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

RoofPark Avenue Plaza, LLC13p · 1 filing · 3 docs

PenthousePark Avenue Plaza, LLC1p · 1 filing · 3 docs

Floor 5BlackRock29p · 3 filings · 20 docs

Floor 4BlackRock19p · 2 filings · 20 docs

Floor 3

Floor 2

Floor 1

Site & exteriorBlackRock18p · 5 filings · 18 docs

▾Owner History (Filing Record)

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

Owner	Filings	Most Recent
49 East 52nd St Leasehold	90	07/17/2026
49 East 52nd Street	33	03/21/2026
Park Avenue Plaza Owner	7	07/08/2026
Fisher Brothers Realty	2	03/21/2026
CBS Broadcasting	2	03/21/2026

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
Diaz Architects Inc., PA	3	09/17/2024
Office of James Ruderman	3	09/17/2024
Patti & Anthes Consulting Engineers	1	02/06/2023
360 Engineering	2	03/03/2022

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
Rizzo Group	5	03/21/2026
Codegreen	2	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
Versatile Services	General Contractor	3	07/08/2026
C & D Restoration	specialty_contractor	2	07/08/2026
PJP Installers	Scaffold	2	07/08/2026
Mutual Electric	Electrical	1	03/21/2026
Adco Electrical	Electrical	1	03/21/2026
Ashlar Mechanical	Fire Protection	1	07/08/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
Sag Engineering & Consulting	608	6	09/17/2024
360 Engineering	7496	1	03/03/2022

Building Lifecycle

All (102)Filed (10)Permit Issued (8)Signed Off (7)Facade (FISP) (12)Violation (41)Inspection (3)Special Inspection (21)

07/16/2026

Permit issued — Suspended Scaffold

M01427168-I1-SC

07/07/2026

Filed — Alteration

INDUSTRIAL ROPE ACCESS FOR FACADE INSPECTIONS.

M01427168-I1

12/06/2024

Signed off — Alteration

Construction modifications taking place on the 4th & 5th floors as indicated on the drawings.

M00808655-I1

12/01/2024

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

11/04/2024

Signed off — Alteration

Sprinkler modifications taking place on the 5th floor as indicated on the drawings.

M00809791-I1

11/04/2024

Signed off — Alteration

Structural modifications taking place on the 4-5th floors as indicated on the drawings.

M00808859-I1

09/26/2024

Special inspection requirement — Final

Chester Kowalski

09/26/2024

Special inspection requirement — Sprayed fire-resistant materials

Chester Kowalski

09/26/2024

Special inspection requirement — Fire-Resistant Penetrations and Joints

Chester Kowalski

09/18/2024

Special inspection requirement — Post-installed Anchors

Chester Kowalski

09/18/2024

Special inspection requirement — Structural Steel - Details

Chester Kowalski

09/18/2024

Special inspection requirement — Final

Chester Kowalski

09/18/2024

Special inspection requirement — Masonry

Chester Kowalski

09/18/2024

Special inspection requirement — Structural Steel - Welding

Chester Kowalski

09/17/2024

Filed — Alteration

Construction modifications taking place on the 4th & 5th floors as indicated on the drawings.

M00808655-P1

09/17/2024

Filed — Alteration

Structural modifications taking place on the 4-5th floors as indicated on the drawings.

M00808859-P1

09/17/2024

Special inspection requirement — Final

Chester Kowalski

09/17/2024

Special inspection requirement — Structural Steel - Welding

Chester Kowalski

09/17/2024

Special inspection requirement — Masonry

Chester Kowalski

09/17/2024

Special inspection requirement — Post-installed Anchors

Chester Kowalski

09/17/2024

Special inspection requirement — Structural Steel - Details

Chester Kowalski

03/29/2023

Special inspection requirement — Final

Chester Kowalski

03/29/2023

Special inspection requirement — Fire-Resistant Penetrations and Joints

Chester Kowalski

03/29/2023

Special inspection requirement — Sprayed fire-resistant materials

Chester Kowalski

03/16/2023

Inspection — Certified Sprinkler-SP-Fixtures-Finish

Certified

View inspection ↗

03/13/2023

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

Certified

View inspection ↗

03/13/2023

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

Certified

View inspection ↗

03/07/2023

Permit issued — Sprinklers

M00809791-I1-EW-SP

03/04/2023

Permit issued — Structural

M00808859-I1-ST

02/06/2023

Filed — Alteration

Sprinkler modifications taking place on the 5th floor as indicated on the drawings.

M00809791-I1

02/06/2023

Permit issued — General Construction

M00808655-I1-GC

02/01/2023

Filed — Alteration

Construction modifications taking place on the 4th & 5th floors as indicated on the drawings.

M00808655-I1

01/30/2023

Filed — Alteration

Structural modifications taking place on the 4-5th floors as indicated on the drawings.

M00808859-I1

01/04/2023

Signed off — Alteration

M00687560-I1

01/04/2023

Signed off — Alteration

M00687684-I1

09/23/2022

Cycle 9 facade report submitted

09/23/2022

Cycle 9 facade report signed — SWARMP

09/12/2022

Cycle 9 facade inspection completed

08/09/2022

Signed off — Alteration

M00626880-I1

08/09/2022

Signed off — Alteration

Structural modifications to take place on the facade as per drawings filed herewith. No change in use, egress, or occupancy.

M00635612-I1

03/04/2022

Permit issued — Supported Scaffold

M00687684-I1-SF

03/03/2022

Filed — Alteration

M00687560-I1

03/03/2022

Filed — Alteration

M00687684-I1

03/03/2022

Permit issued — Sidewalk Shed

M00687560-I1-SH

02/16/2022

Permit issued — Structural

M00635612-I1-ST

02/16/2022

Permit issued — General Construction

M00626880-I1-GC

02/08/2022

Filed — Alteration

Structural modifications to take place on the facade as per drawings filed herewith. No change in use, egress, or occupancy.

M00635612-I1

02/02/2022

Special inspection requirement — Structural Stability – Alterations of existing buildings

Chester Kowalski

02/02/2022

Special inspection requirement — Structural Steel - Details

Chester Kowalski

02/02/2022

Special inspection requirement — Structural Steel - Welding

Chester Kowalski

02/02/2022

Special inspection requirement — Structural Steel - High Strength Bolting

Chester Kowalski

11/23/2021

Filed — Alteration

M00626880-I1

11/22/2021

Special inspection requirement — Final

Chester Kowalski

12/31/2020

Violation issued (DOB, closed)

V*-DOB VIOLATION - Resolved

12/03/2019

Violation issued (DOB, closed)

V*-DOB VIOLATION - Resolved

12/03/2019

Violation issued (DOB, closed)

V*-DOB VIOLATION - Resolved

11/12/2019

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

08/03/2019

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

05/02/2019

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

10/01/2018

Cycle 8 facade report submitted

Latest 60 of 102 events.

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Suspended Scaffold	Permit Issued	Central Construction Management	07/16/2026
DOB NOW	Sprinklers	Signed-off	Ashlar Mechanical	03/07/2023
DOB NOW	Structural	Signed-off	Versatile Services	03/04/2023
DOB NOW	General Construction	Signed-off	Versatile Services	02/06/2023
DOB NOW	Supported Scaffold	Signed-off	PJP Installers	03/04/2022
DOB NOW	Sidewalk Shed	Signed-off	PJP Installers	03/03/2022
DOB NOW	Structural	Signed-off	C D Restoration	02/16/2022
DOB NOW	General Construction	Signed-off	C D Restoration	02/16/2022
BIS	OT	ISSUED	Structure Tone	03/15/2017
BIS	SP	ISSUED	Abco-Peerless Sprinkler	10/24/2016
BIS	PL	ISSUED	Lab Plumbing & Heating Co	10/04/2016
BIS	OT	ISSUED	Structure Tone	09/23/2016
BIS	MH	ISSUED	Structure Tone	09/23/2016
BIS	EQ	ISSUED	Everest Scaffolding	04/15/2015
BIS	SP	ISSUED	Par Fire Protection	06/13/2014
BIS	PL	ISSUED	Lab Plumbing & Heating Co	06/05/2014
BIS	OT	ISSUED	Americon Construction	05/16/2014
BIS	MH	ISSUED	Americon Construction	05/16/2014
BIS	SP	ISSUED	Sirina Fire Protection	01/10/2013
BIS	OT	ISSUED	Plaza Construction	12/04/2012
BIS	MH	ISSUED	Plaza Construction	12/04/2012
BIS	PL	ISSUED	Jag Plumbing & Mechanical	05/17/2011
BIS	OT	ISSUED	Duane Reade	02/25/2011
BIS	OT	ISSUED	Duane Reade	02/25/2011
BIS	PL	ISSUED	Par Plumbing Co	02/03/2011
BIS	SP	ISSUED	Tower Fire Protection	12/03/2010
BIS	OT	ISSUED	Cross Management	08/30/2010
BIS	—	ISSUED	A.M.A. Holdings	07/23/2010
BIS	—	ISSUED	A.M.A. Holdings	07/19/2010
BIS	—	ISSUED	A.M.A. Holdings	07/19/2010
BIS	—	ISSUED	A.M.A. Holdings	07/19/2010
BIS	OT	ISSUED	Duane Reade - A NY Partners	06/14/2010
BIS	MH	ISSUED	Duane Reade - A NY Partners	06/14/2010
BIS	SP	ISSUED	Tower Fire Protection	03/11/2010
BIS	—	ISSUED	Turner Construction Company	01/25/2010
BIS	MH	ISSUED	Turner Construction Company	11/23/2009
BIS	OT	ISSUED	Turner Construction Company	11/23/2009
BIS	OT	ISSUED	Turner Construction Company	11/23/2009
BIS	OT	ISSUED	Turner Construction Company	10/19/2009
BIS	MH	ISSUED	Turner Construction Company	10/19/2009

+ 18 more permits on file

2 projects · most recent 03/01/2022

General Wiring

Filed	Status	Contractor	Scope
03/01/2022	Complete	Top Shelf Electric	—
12/13/2017	Permit Issued	Deboccia Electric Construction	General Wiring

1 project · most recent 07/07/2026

Filed	Status	Contractor	Scope
07/07/2026	Permit Issued	Central Construction Management	—

▾Field Inspections (DOB CAP) — 3

Date	Type	Result	Report
03/16/2023	Certified Sprinkler-SP-Fixtures-Finish	Certified	View ↗
03/13/2023	Certified Remove/Cap - work done in accordance with code	Certified	View ↗
03/13/2023	Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test	Certified	View ↗

▾Special Inspection Requirements (DOB NOW) — 21

Date	Requirement	Inspector	Role
09/26/2024	Final	Chester Kowalski	progress
09/26/2024	Sprayed fire-resistant materials	Chester Kowalski	special
09/26/2024	Fire-Resistant Penetrations and Joints	Chester Kowalski	special
09/18/2024	Post-installed Anchors	Chester Kowalski	special
09/18/2024	Structural Steel - Details	Chester Kowalski	special
09/18/2024	Final	Chester Kowalski	progress
09/18/2024	Masonry	Chester Kowalski	special
09/18/2024	Structural Steel - Welding	Chester Kowalski	special
09/17/2024	Final	Chester Kowalski	progress
09/17/2024	Structural Steel - Welding	Chester Kowalski	special
09/17/2024	Masonry	Chester Kowalski	special
09/17/2024	Post-installed Anchors	Chester Kowalski	special
09/17/2024	Structural Steel - Details	Chester Kowalski	special
03/29/2023	Final	Chester Kowalski	progress
03/29/2023	Fire-Resistant Penetrations and Joints	Chester Kowalski	special
03/29/2023	Sprayed fire-resistant materials	Chester Kowalski	special
02/02/2022	Structural Stability – Alterations of existing buildings	Chester Kowalski	special
02/02/2022	Structural Steel - Details	Chester Kowalski	special
02/02/2022	Structural Steel - Welding	Chester Kowalski	special
02/02/2022	Structural Steel - High Strength Bolting	Chester Kowalski	special
11/22/2021	Final	Chester Kowalski	progress

▾Tenants in the building

Tenant	Space	Floors	Renovation projects
BlackRock	Office	Floors 4, 5	Project M00809791 Alteration · LOC Issued · 02/06/2023 Project M00808655 Alteration · LOC Issued · 02/01/2023 Project M00808859 Alteration · LOC Issued · 01/30/2023

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 — 491 on file (BIS + DOB NOW)

▸Plans & Drawings10

▸DOB NOWPlans/Sketch10

09/03/2026M00626880-I1Request digital key ↗

09/02/2026M00635612-I1Request digital key ↗

09/02/2026M00687684-I1Request digital key ↗

Showing 3 of 10 on file for this type

▸Applications & Permits112

▸BISPLAN / WORK APPROVAL APPLICATION69

11/09/2022120222927Open ↗

10/19/2022120222927Open ↗

10/18/2022120222927Open ↗

Showing 3 of 69 on file for this type

▸BISWORK PERMIT APPLICATION42

04/04/2017122855393Open ↗

10/27/2016122848632Open ↗

10/13/2016122855393Open ↗

Showing 3 of 42 on file for this type

▸BISCERTIFICATE OF OCCUPANCY APPLICATION1

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

Showing 0 of 1 on file for this type

▸Seals & Professional Certifications125

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION61

11/21/2017122848632Open ↗

10/03/2016122848632Open ↗

Showing 3 of 61 on file for this type

▸DOB NOWSpecial Inspector Seal & Signature16

09/23/2026M00808859-I1Open ↗

Showing 3 of 16 on file for this type

▸BISPROFESSIONAL CERTIFIED CHECKLIST15

10/03/2016122848632Open ↗

09/27/2016122855393Open ↗

05/19/2014122001485Open ↗

Showing 3 of 15 on file for this type

▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM11

05/19/2014122012044Open ↗

01/17/2013121482564Open ↗

12/07/2012121412989Open ↗

Showing 3 of 11 on file for this type

▸DOB NOWDPL-1: Design Professional Seal & Signature9

09/03/2026M00626880-I1Open ↗

09/02/2026M00687684-I1Open ↗

09/02/2026M00687560-I1Open ↗

Showing 3 of 9 on file for this type

▸BISPROFESSIONAL CERTIFICATION STATEMENT6

10/03/2016122848632Open ↗

09/27/2016122855393Open ↗

Showing 3 of 6 on file for this type

▸DOB NOWProgress Inspector Seal & Signature5

09/23/2026M00808859-I1Open ↗

08/27/2026M00808655-P1Open ↗

08/26/2026M00808859-P1Open ↗

Showing 3 of 5 on file for this type

▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY1

04/14/2015140333565Open ↗

▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION1

04/14/2015140333565Open ↗

▸Trade Schedules & Equipment52

▸BISSELF-CERT PLUMBING NOTICE15

01/05/2015122001485Open ↗

10/07/2014122001485Open ↗

09/03/2014122001485Open ↗

Showing 3 of 15 on file for this type

▸BISSCHEDULE B - PLUMBING10

01/17/2013121482564Open ↗

12/07/2012121412989Open ↗

Showing 2 of 10 on file for this type

▸BISEQUIPMENT USE PERMITS8

01/13/2012120446035Open ↗

Showing 1 of 8 on file for this type

▸BISFA - FDNY APPROVAL : FD-FAA6

09/22/2017122852092Open ↗

08/03/2017122852092Open ↗

02/29/2016122381047Open ↗

Showing 3 of 6 on file for this type

▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE4

10/03/2016122848632Open ↗

09/27/2016122855393Open ↗

05/19/2014122001485Open ↗

Showing 3 of 4 on file for this type

▸BISSPRINKLER INSP REPORT : FP-853

05/24/2013121412989Open ↗

Showing 1 of 3 on file for this type

▸BISEQUIPMENT USE APPLICATION-PERMIT3

01/13/2012120446035Open ↗

Showing 1 of 3 on file for this type

▸BISSIGN HANGER CERTIFICATE3

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

Showing 0 of 3 on file for this type

▸Safety & Tenant Protection2

▸BISDS1-Demolition Submittal Certification Form1

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

Showing 0 of 1 on file for this type

▸BISSTREET TREE CHECKLIST1

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

Showing 0 of 1 on file for this type

▸Environmental & Asbestos38

▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'16

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

Showing 0 of 16 on file for this type

▸BISASBESTOS: CERTIFICATION (DEP ACP5)12

10/03/2016122848632Open ↗

09/27/2016122855393Open ↗

09/23/2016122852092Open ↗

Showing 3 of 12 on file for this type

▸DOB NOWDEP ACP-5: Asbestos Assessment Report7

09/03/2026M00626880-I1Open ↗

09/01/2026M00808859-I1Open ↗

09/01/2026M00808859-P1Open ↗

Showing 3 of 7 on file for this type

▸BISACP5 ASBESTOS: CERTIFICATION (DEP ACP5)2

12/07/2012121412998Open ↗

▸BISASBESTOS EXEMPTION CERTIFICATION LETTER1

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

Showing 0 of 1 on file for this type

▸Energy Compliance9

▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS6

09/27/2016122855393Open ↗

07/11/2016122012044Open ↗

Showing 3 of 6 on file for this type

▸BISTR8: Energy Code Progress Inspections2

12/07/2012121412998Open ↗

▸BISAS-BUILT ENERGY ANALYSIS1

07/11/2016122012044Open ↗

▸Inspections & Test Reports4

▸BISHYDRAULIC FLOW CALCULATIONS1

12/07/2012121412989Open ↗

▸BISTECHNICAL REPORT: CONCRETE DESIGN MIX1

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

Showing 0 of 1 on file for this type

▸BISTECHNICAL REPORT: CONCRETE/TEST CYLINDER1

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

Showing 0 of 1 on file for this type

▸BISTECHNICAL REPORT: RESPONSIBILITY1

04/14/2015140333565Open ↗

▸Approvals, Objections & Sign-offs45

▸BISADMINISTRATIVE OBJECTIONS18

01/17/2013121482564Open ↗

12/07/2012121412989Open ↗

12/07/2012121450250Open ↗

Showing 3 of 18 on file for this type

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST18

02/12/2018122848632Open ↗

09/22/2017122852092Open ↗

02/29/2016122381047Open ↗

Showing 3 of 18 on file for this type

▸BISSCHEDULE A - OCCUPANCY / USE7

10/18/2022120222927Open ↗

11/09/2015120222927Open ↗

03/21/2014120222927Open ↗

Showing 3 of 7 on file for this type

▸BISLETTERS - SUPPORTING DOCUMENTATION2

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

Showing 0 of 2 on file for this type

▸Cost, Insurance & Ownership47

▸BISCOST AFFIDAVIT47

02/12/2018122848632Open ↗

09/22/2017122852092Open ↗

10/03/2016122848632Open ↗

Showing 3 of 47 on file for this type

▸Filing & Intake Forms39

▸BISEFILING COVER SHEET28

10/03/2016122848632Open ↗

09/27/2016122855393Open ↗

Showing 3 of 28 on file for this type

▸BISADDITIONAL INFORMATION6

04/27/2018120222927Open ↗

03/22/2017122855393Open ↗

11/09/2015120222927Open ↗

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▸BISBOROUGH INTAKE FORM4

08/19/2019122855393Open ↗

02/12/2018122848632Open ↗

09/22/2017122852092Open ↗

Showing 3 of 4 on file for this type

▸BISEFILING JOB APPLICATION COVER SHEET1

04/14/2015140333565Open ↗

▸Other Documents8

▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION5

02/15/2012120581236Open ↗

Showing 1 of 5 on file for this type

▸BISSupporting Document: Fee Exempt1

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

Showing 0 of 1 on file for this type

▸BISPLOT DIAGRAM1

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

Showing 0 of 1 on file for this type

▸DOB NOWIRA Certification1

08/16/2026M01427168-I1Open ↗