← Back
Entity
Kirkland & Ellis
Tenant
8 projects with open permitsMANHATTAN · 44
2 buildings
44
Total Filings
44
Projects on File
2
Buildings Worked
8
Projects w/ Open Permits
Tenant
Primary Trade
Activity
Projects by first filing month44 projects all-time
0257Mar '20 · 1Dec '21 · 3Jun '22 · 1Jan '23 · 2Feb '23 · 2Jan '24 · 1Feb '24 · 3Jan '25 · 3Feb '25 · 1Mar '25 · 3May '25 · 1Jun '25 · 4Sep '25 · 3Oct '25 · 6Nov '25 · 3Dec '25 · 3Jan '26 · 2Mar '26 · 1Apr '26 · 1202120222023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit818%
Signed off3580%
Filed only12%
By project type
Alteration41
Alteration CO2
No Work1
Most active buildings
All buildings →
601 LEXINGTON AVENUEMANHATTAN · 5 open · latest 07/14/2026
36 projects
900 3 AVENUEMANHATTAN · 3 open · latest 08/04/2026
8 projects
Key relationships
Everyone →
Design firms
Filing representatives
Owners
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01321430 ↗900 3 AVENUE
MANHATTAN
Alteration COPermit Issued01/15/202608/04/2026
Design HOK
Filing a new Alt CO to establish a commercial kitchen on the 33rd Floor and change of occupancy on Floors 34-36th Floors.
M01254267 ↗601 LEXINGTON AVENUE
MANHATTAN
Alteration COPermit Issued11/05/202507/14/2026
Design HOK
CHANGE OF USE FROM ALL BUSINESS TO BUISNESS (E), DINING (F-4) AND ASSEMBLY (F-1b). 2 HOURFIRE RATED PARTITION TO TERMINATE PUBLIC ASSEMBLY T…
M01228634 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off06/26/202506/01/2026
Design HOK
Interior fit out of tenant 53rd floor, including non-load bearing partitions, interior finishes and core toilet rooms. ALT CO filed under se…
M01228713 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off06/26/202506/01/2026Structural portion of interior fit out of tenant 53rd floor, including non-load bearing partitions, interior finishes and core toilet rooms.…
M01355501 ↗601 LEXINGTON AVENUE
MANHATTAN
No WorkFiled — no permit on record04/01/2026—
Design HOK
—
M01345402 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off03/05/202603/16/2026Standpipe work related to Interior fit out of tenant 53rd floor, including non-load bearing partitions, interior finishes and core toilet ro…
Counts cover all 44 projects (44 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.
NameProjects togetherMost recent
ROBERT DERECTOR ASSOCIATES2009/08/2026
ACTIVE DESIGN GROUP ENGINEERING902/05/2026
HOK904/01/2026
GENSLER510/14/2024
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
JT MAGEN & COMPANY INC2802/20/2026
ABCO-PEERLESS SPRKLR CORP809/02/2026
ASHLAND PLUMBING CORP709/02/2026
PREFERRED SPKLR AND MECH211/05/2025
PAR FIRE PROTECTION LLC109/08/2026
SIRINA FIRE PROT CORP105/14/2025
TOWER FIRE PROTECTION INC102/07/2023
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
BOSTON PROPERTIES2509/02/2026
PARAMOUNT GROUP609/08/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
A1 EXPEDITING SERVICE CORP.2309/02/2026
RIZZO GROUP609/08/2026
44 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 44Open permit 8Signed off 35Filed only 1
Any typeAlteration 41Alteration CO 2No Work 1
44 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01321430 ↗900 3 AVENUE
MANHATTAN
Alteration COPermit Issued01/15/202608/04/2026
Design HOK
Filing a new Alt CO to establish a commercial kitchen on the 33rd Floor and change of occupancy on Floors 34-36th Floors.
M01254267 ↗601 LEXINGTON AVENUE
MANHATTAN
Alteration COPermit Issued11/05/202507/14/2026
Design HOK
CHANGE OF USE FROM ALL BUSINESS TO BUISNESS (E), DINING (F-4) AND ASSEMBLY (F-1b). 2 HOURFIRE RATED PARTITION TO TERMINATE PUBLIC ASSEMBLY T…
M01228634 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off06/26/202506/01/2026
Design HOK
Interior fit out of tenant 53rd floor, including non-load bearing partitions, interior finishes and core toilet rooms. ALT CO filed under se…
M01228713 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off06/26/202506/01/2026Structural portion of interior fit out of tenant 53rd floor, including non-load bearing partitions, interior finishes and core toilet rooms.…
M01355501 ↗601 LEXINGTON AVENUE
MANHATTAN
No WorkFiled — no permit on record04/01/2026—
Design HOK
—
M01345402 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off03/05/202603/16/2026Standpipe work related to Interior fit out of tenant 53rd floor, including non-load bearing partitions, interior finishes and core toilet ro…
M01317935 ↗900 3 AVENUE
MANHATTAN
AlterationSigned-off12/11/202501/26/2026Installation of new sprinkler heads and piping on Floors 33, 34, 35, 36 (Kirkland & Ellis) as per approved plans. No change to use, egress o…
M01335303601 LEXINGTON AVENUE
MANHATTAN
AlterationPermit Issued01/13/202601/20/2026SD work as per plans.
M01317816 ↗900 3 AVENUE
MANHATTAN
AlterationSigned-off12/11/202512/18/2025Structural modifications and reinforcements on Floors 33, 34, 35, 36 (Kirkland & Ellis) as per approved plans. No change to use, egress, or …
M01317589 ↗900 3 AVENUE
MANHATTAN
AlterationSigned-off12/11/202512/17/2025
Design HOK
Renovation of existing office space including interior partitions, doors, ceilings, and floors on Floors 33, 34, 35, 36 (Kirkland & Ellis) …
M01300829 ↗900 3 AVENUE
MANHATTAN
AlterationPermit Issued11/05/202512/02/2025Installation of new sprinkler heads and piping on Floors 3, 11, 20, 21, 27, 28, 29, 30 (Kirkland & Ellis) as per approved plans. No change t…
M01302774 ↗900 3 AVENUE
MANHATTAN
AlterationPermit Issued11/05/202512/02/2025Modifications to the existing Standpipe system on floors 3, 11, 20, 21, 27, 28, & 29 (Kirkland & Ellis) as per approved plans. No change to …
M01228651 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationPermit Issued06/30/202511/25/2025Interior fit out of tenant 53rd floor, including non-load bearing partitions, interior finishes and core toilet rooms. ALT CO filed under se…
M01252346 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationPermit Issued10/27/202511/24/2025PL/SP WORK RELATED TO DEMOLITION AND INTERIOR FIT-0T OF 49TH -51ST FLOORS AS PER PLANS.
M01252801 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationPermit Issued09/09/202511/24/2025PL/SP work as per plans.
M01252318 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off10/24/202511/21/2025
Design HOK
DEMOLITION AND INTERIOR FIT-0T OF PARTIAL 49TH, 50TH, PARTIAL 51ST AND PARTIAL 52ND FLOORS INCLUDING NON-LOAD BEARING PARTIONS, INTERIOR FIN…
M01252326 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off10/27/202511/19/2025MH WORK RELATED TO DEMOLITION AND INTERIOR FIT-OUT AS PER PLANS.
M01252353 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off10/27/202511/19/2025ST WORK RELATED TO DEMOLITION AND INTERIOR FIT-0T OF 49TH -51ST FLOORS AS PER PLANS.
M01300755 ↗900 3 AVENUE
MANHATTAN
AlterationSigned-off10/31/202511/07/2025Structural modifications and reinforcements on Floors 3, 4, 11, 20, 27, as per approved plans. No change to use, egress, or occupancy.
M01300651 ↗900 3 AVENUE
MANHATTAN
AlterationSigned-off10/31/202511/06/2025
Design HOK
Renovation of existing office space including interior partitions, doors, ceilings, and floors on Floors 3, 11, 20, 21, 27, 28, 29, 30 (Kir…
M01252762 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off09/09/202510/29/2025Demolition of existing ductwork, VAVs, AC units, air outlets, and piping on the 45th floor except where noted. Full fit out of the floor wit…
M01252810 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off09/08/202510/10/2025ST work as per plans.
M01228675 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off06/30/202507/03/2025Mechanical work related to Interior fit out of tenant 53rd floor. ALT CO filed under separate application.
M01214114 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off05/14/202506/23/2025Plumbing removals and installation of temporary sprinkler loop as per plans filed herewith. No change to use, egress, or occupancy.
M01192313 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off03/21/202504/08/2025PL/SP WORK AS PER PLANS. NO CHANGE TO USE EGRESS OR OCCUPANCY ON THIS APPLICAITION.
M01192302 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off03/21/202503/26/2025New fitout of full 33rd floor. New ductwork connections to base building shafts, new condenser water piping connections to tenant risers, VA…
M01192310 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off03/21/202503/26/2025ST WORK AS PER PLANS. NO CHANGE TO USE EGRESS OR OCCUPANCY ON THIS APPLICATION.
M01169912 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off02/13/202502/21/2025
Design HOK
Removal of non load bearing partitions and internal finishes on construction floor 39, marketing floor 43. No change to use egress or occup…
M01158905 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off01/22/202501/27/2025
Design HOK
Removal of non load bearing partitions and internal finishes. No change to use egress or occupancy on this filing.
M01158915 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off01/23/202501/27/2025Filing for interior plumbing removals prior to fit out. No change to use egress or occupancy on this application.
M01158916 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off01/23/202501/27/2025Filing for interior sprinkler removals prior to fit out. No change to use egress or occupancy on this application.
M00985828 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off02/26/202402/28/2024MECHANICAL FILING AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
M00999266 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off02/27/202402/28/2024STRUCTURAL FILING AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
M00985792 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off02/25/202402/27/2024
Design GENSLER
INSTALLATION OF NON LOAD BEARING PARTITIONS AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
M00961643 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off01/16/202401/19/2024
Design GENSLER
REMOVAL OF NON LOAD BEARING PARTITIONS AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
M00800015 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off01/19/202309/20/2023
Design GENSLER
Interior demolition as per plans filed herewith. No change to use, egress, or occupancy.
M00811023 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off02/13/202309/20/2023Structural interior work including stairs as per plans filed herewith. No change to use, egress, or occupany.
M00810987 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off02/13/202302/24/2023
Design GENSLER
Interior renovations as per plans filed herewith. No change to use, egress, or occupancy.
M00800047 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off01/12/202301/26/2023Sprinkler removal and installation of temporary sprinkler loop system as per plans filed herewith. No change to use, egress, or occupancy.
M00335311 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off12/22/202101/05/2023Sprinkler modifications on the 49th FL as per plans filed herewith. No change to use, egress, or occupancy.
M00737776 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off06/21/202206/24/2022Structural alterations for new communicating stairs and moving partition as per plans filled herewith. No change in use, egress or occupancy…
M00335224 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off12/22/202101/13/2022Plumbing modifications on the 49th FL as per plans filed herewith. No change to use, egress, or occupancy.
M00647297 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off12/21/202101/05/2022
Design GENSLER
Interior renovations on the 49th FL as per plans filed herewith. No change to use, egress, or occupancy.
M00322374 ↗601 LEXINGTON AVENUE
MANHATTAN
AlterationSigned-off03/19/202012/17/2021mechanical ductwork modifications as per plans filed herewith. no change to use, egress, or occupancy.
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
900 3 AVENUE ↗809/08/2026
601 LEXINGTON AVENUE ↗3609/02/2026
▾Documents — 362 on file (BIS + DOB NOW)
▸Plans & Drawings68
▸DOB NOWPlans/Sketch58
Showing 3 of 58 on file for this type
▸DOB NOWPlans/Sketch - Plumbing3
▸DOB NOWPlans/Sketch - Sprinkler3
▸DOB NOWPlans/Sketch - Mechanical Systems3
▸DOB NOWPlans/Sketch - Place of Assembly1
▸Applications & Permits48
▸DOB NOWLPC Approval/Permit48
09/15/2026M01252346-P3 · 601 LEXINGTON AVENUEOpen ↗
09/03/2026M00322374-I1 · 601 LEXINGTON AVENUEOpen ↗
08/27/2026M00985828-I1 · 601 LEXINGTON AVENUEOpen ↗
Showing 3 of 48 on file for this type
▸Seals & Professional Certifications155
▸DOB NOWDPL-1: Design Professional Seal & Signature69
09/15/2026M01317935-I1 · 900 3 AVENUEOpen ↗
09/15/2026M01317935-P1 · 900 3 AVENUEOpen ↗
09/15/2026M01252346-P3 · 601 LEXINGTON AVENUEOpen ↗
Showing 3 of 69 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature48
09/23/2026M01317935-I1 · 900 3 AVENUEOpen ↗
09/23/2026M01317935-P1 · 900 3 AVENUEOpen ↗
09/23/2026M01252762-I1 · 601 LEXINGTON AVENUEOpen ↗
Showing 3 of 48 on file for this type
▸DOB NOWProgress Inspector Seal & Signature38
09/23/2026M01228675-I1 · 601 LEXINGTON AVENUEOpen ↗
09/23/2026M01252762-I1 · 601 LEXINGTON AVENUEOpen ↗
09/20/2026M01355501-I1 · 601 LEXINGTON AVENUEOpen ↗
Showing 3 of 38 on file for this type
▸Safety & Tenant Protection3
▸DOB NOWStreet Tree Checklist2
08/19/2026M01321430-I1 · 900 3 AVENUEOpen ↗
08/13/2026M01254267-I1 · 601 LEXINGTON AVENUEOpen ↗
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/19/2026M01321430-I1 · 900 3 AVENUEOpen ↗
▸Environmental & Asbestos61
▸DOB NOWDEP ACP-5: Asbestos Assessment Report61
09/15/2026M01252346-P3 · 601 LEXINGTON AVENUEOpen ↗
09/03/2026M00322374-I1 · 601 LEXINGTON AVENUEOpen ↗
09/03/2026M00335224-P1 · 601 LEXINGTON AVENUEOpen ↗
Showing 3 of 61 on file for this type
▸Approvals, Objections & Sign-offs1
▸DOB NOWLandmark Approval1
08/13/2026M01345402-I1 · 601 LEXINGTON AVENUEOpen ↗
▸Other Documents26
▸DOB NOWProof of Historic Building24
09/15/2026M01252346-P3 · 601 LEXINGTON AVENUEOpen ↗
08/20/2026M01192302-I1 · 601 LEXINGTON AVENUEOpen ↗
08/19/2026M01228634-I1 · 601 LEXINGTON AVENUEOpen ↗
Showing 3 of 24 on file for this type
▸DOB NOWProperty Ownership Certification2
08/21/2026M01254267-I1 · 601 LEXINGTON AVENUEOpen ↗
08/19/2026M01321430-I1 · 900 3 AVENUEOpen ↗