Millennium — NYC Tenant: Renovation Projects, Floors & Buildings from Filed Plans

Project	Address	Type	Status	Filed	Latest permit	On the project	Description
M01213917 ↗	599 LEXINGTON AVENUE MANHATTAN	Alteration	Permit Issued	08/25/2025	09/25/2026	Design ARCHITECTURE PLUS INFORMATION Owner BOSTON PROPERTIES Contractor JT MAGEN & COMPANY INC Filer A1 EXPEDITING SERVICE CORP.	REMOVAL AND INSTILLATION OF INTERIOR NON LOAD BEARING PARTITIONS AND RELATED FINISHES. NO CHANGE IN USE, EGRESS OR OCCUPANCY
M01263789 ↗	599 LEXINGTON AVENUE MANHATTAN	Alteration	Permit Issued	08/29/2025	09/25/2026	Design GILSANZ MURRAY STEFICEK LLP Owner BOSTON PROPERTIES Contractor JT MAGEN & COMPANY INC Filer A1 EXPEDITING SERVICE CORP.	Interior renovation on 19th, 20th & 21st floor with interconnecting stair & void. Approximately 550 linear feet of new steel.
M01276383 ↗	599 LEXINGTON AVENUE MANHATTAN	Alteration	Permit Issued	10/23/2025	09/25/2026	Contractor JT MAGEN & COMPANY INC	REMOVAL AND INSTILLATION OF INTERIOR NON LOAD BEARING PARTITIONS AND RELATED FINISHES. NO CHANGE IN USE, EGRESS OR OCCUPANCY
M01201139 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	04/28/2025	05/01/2025	Design MMOSER ASSOCIATES Owner BXP Contractor STRUCTURE TONE, LLC Filer A1 EXPEDITING SERVICE CORP.	Removal and instillation of interior non load bearing partitions and related finishes. No change in use, egress or occupancy
M01182772 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	02/28/2025	03/10/2025	Design JAROS BAUM & BOLLES Owner BOSTON PROPERTIES Contractor ABCO-PEERLESS SPRKLR CORP Filer A1 EXPEDITING SERVICE CORP.	alterations to existing plumbing/sprinkler systems as per plans filed herewith
M01116917 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	11/20/2024	11/27/2024	Design LEHMAN SMITH MCLEISH Contractor STRUCTURE TONE, LLC	removal and instillation of interior non load bearing partitions and related finishes. No changes to use, egress or occupancy

Counts cover all 12 projects (12 DOB NOW). Dated by first filing; BIS projects by first permit issuance.

Who this entity's projects were filed with. Top 25 per group by shared jobs.

Name	Projects together	Most recent
JAROS BAUM & BOLLES	3	02/28/2025
THORNTON TOMASETTI	3	12/09/2021
MMOSER ASSOCIATES	2	04/28/2025
ARCHITECTURE PLUS INFORMATION	1	09/23/2025
GILSANZ MURRAY STEFICEK LLP	1	08/29/2025
LEHMAN SMITH MCLEISH	1	11/20/2024

Who this entity's projects were filed with. Top 25 per group by shared jobs.

Name	Projects together	Most recent
STRUCTURE TONE, LLC	6	04/28/2025
JT MAGEN & COMPANY INC	3	10/23/2025
ABCO-PEERLESS SPRKLR CORP	2	02/28/2025
LAB PLBG & HTG CO INC	2	02/28/2025
PETRETTI & ASSOCIATES LLC	1	12/09/2021

Who this entity's projects were filed with. Top 25 per group by shared jobs.

Name	Projects together	Most recent
BOSTON PROPERTIES	5	09/23/2025
BXP	4	04/28/2025

Who this entity's projects were filed with. Top 25 per group by shared jobs.

Name	Projects together	Most recent
A1 EXPEDITING SERVICE CORP.	7	09/23/2025

12 DOB NOW projects, anchored the same way as Buildings Worked. Status is the project's permit state today: open = at least one permit currently issued. BIS projects show their raw permit status and are not counted as open.

All 12Open permit 3Signed off 9

12 projects

Project	Address	Type	Status	Filed	Latest permit	On the project	Description
M01213917 ↗	599 LEXINGTON AVENUE MANHATTAN	Alteration	Permit Issued	08/25/2025	09/25/2026	Design ARCHITECTURE PLUS INFORMATION Owner BOSTON PROPERTIES Contractor JT MAGEN & COMPANY INC Filer A1 EXPEDITING SERVICE CORP.	REMOVAL AND INSTILLATION OF INTERIOR NON LOAD BEARING PARTITIONS AND RELATED FINISHES. NO CHANGE IN USE, EGRESS OR OCCUPANCY
M01263789 ↗	599 LEXINGTON AVENUE MANHATTAN	Alteration	Permit Issued	08/29/2025	09/25/2026	Design GILSANZ MURRAY STEFICEK LLP Owner BOSTON PROPERTIES Contractor JT MAGEN & COMPANY INC Filer A1 EXPEDITING SERVICE CORP.	Interior renovation on 19th, 20th & 21st floor with interconnecting stair & void. Approximately 550 linear feet of new steel.
M01276383 ↗	599 LEXINGTON AVENUE MANHATTAN	Alteration	Permit Issued	10/23/2025	09/25/2026	Contractor JT MAGEN & COMPANY INC	REMOVAL AND INSTILLATION OF INTERIOR NON LOAD BEARING PARTITIONS AND RELATED FINISHES. NO CHANGE IN USE, EGRESS OR OCCUPANCY
M01201139 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	04/28/2025	05/01/2025	Design MMOSER ASSOCIATES Owner BXP Contractor STRUCTURE TONE, LLC Filer A1 EXPEDITING SERVICE CORP.	Removal and instillation of interior non load bearing partitions and related finishes. No change in use, egress or occupancy
M01182772 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	02/28/2025	03/10/2025	Design JAROS BAUM & BOLLES Owner BOSTON PROPERTIES Contractor ABCO-PEERLESS SPRKLR CORP Filer A1 EXPEDITING SERVICE CORP.	alterations to existing plumbing/sprinkler systems as per plans filed herewith
M01116917 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	11/20/2024	11/27/2024	Design LEHMAN SMITH MCLEISH Contractor STRUCTURE TONE, LLC	removal and instillation of interior non load bearing partitions and related finishes. No changes to use, egress or occupancy
M01116915 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	11/19/2024	11/25/2024	Design JAROS BAUM & BOLLES Owner BXP Contractor STRUCTURE TONE, LLC Filer A1 EXPEDITING SERVICE CORP.	MODIFICATIONS TO EXISTING MECHANICAL SYSTEMS AS PER PLANS FILED HEREWITH.
M01008773 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	03/27/2024	04/01/2024	Design JAROS BAUM & BOLLES Owner BXP Contractor ABCO-PEERLESS SPRKLR CORP Filer A1 EXPEDITING SERVICE CORP.	Modifications to existing plumbing/sprinkler & Standpipe systems as per plans filed herewith. ALL FILING FEE'S PAID UNDER DOBNOW APPLICATION…
M00945773 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	03/19/2024	03/26/2024	Design MMOSER ASSOCIATES Owner BXP Contractor STRUCTURE TONE, LLC Filer A1 EXPEDITING SERVICE CORP.	Removal & instillation of interior non load bearing partitions and related finishes. No change in use, egress or occupancy
M00615791 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	12/09/2021	02/28/2022	Design THORNTON TOMASETTI Contractor PETRETTI & ASSOCIATES LLC	Structural modifications as per plans filed herewith. No change in use, egress or occupancy under this application.
M00264974 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	01/30/2020	01/30/2020	Design THORNTON TOMASETTI Owner BOSTON PROPERTIES, INC. Contractor STRUCTURE TONE, LLC Filer A1 EXPEDITING SERVICE CORP.	Structural modifications as per plans filed herewith. No change in use, egress or occupancy under this application.
M00264993 ↗	399 PARK AVENUE MANHATTAN	Alteration	Signed-off	01/30/2020	01/30/2020	Design THORNTON TOMASETTI Owner BOSTON PROPERTIES, INC. Contractor STRUCTURE TONE, LLC Filer A1 EXPEDITING SERVICE CORP.	Structural modifications as per plans filed herewith. No change in use, egress or occupancy under this application.