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Entity
McDermott Will & Emery
Tenant · filed under 3 names
4 projects with open permitsMANHATTAN · 9
1 building
9
Total Filings
9
Projects on File
1
Buildings Worked
4
Projects w/ Open Permits
Tenant
Primary Trade
Activity
Projects by first filing month9 projects all-time
0134Oct '20 · 1Aug '24 · 3Sep '24 · 1Apr '26 · 1Jun '26 · 2Aug '26 · 1202120222023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit444%
Signed off333%
Filed only222%
By project type
Alteration7
No Work2
Most active buildings
All buildings →
51 EAST 42 STREETMANHATTAN · 4 open · latest 09/03/2026
9 projects
Key relationships
Everyone →
Design firms
6 projects
3 projects
Filing representatives
6 projects
Contractors
6 projects
1 projects
Owners
6 projects
Filed under
McDermott Will & Emery5McDermott Will & Schult3McDermott1
Identified by the contact ids of the people who file for the firm and by its email domain, not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01426852 ↗51 EAST 42 STREET
MANHATTAN
AlterationPermit Issued08/03/202609/03/2026
Design AREA DESIGN, INC.
Owner SL GREEN REALTY CORP
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Interior renovation / modifications as per plans filed herewith. No change to use, egress, or occupancy.
M01412406 ↗51 EAST 42 STREET
MANHATTAN
AlterationPermit Issued06/17/202607/13/2026
Design DEWBERRY ENGINEERS INC
Contractor JT MAGEN & COMPANY INC
Modifications to existing HVAC and ductwork as per plans filed herewith. No change to use, egress, or occupancy.
M01412386 ↗51 EAST 42 STREET
MANHATTAN
AlterationPermit Issued06/16/202607/10/2026
Design AREA DESIGN, INC.
Owner SL GREEN REALTY CORP
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Interior demolition of existing tenant improvement space including non load bearing partitions as per plans filed herewith. No change in egr…
M01375121 ↗51 EAST 42 STREET
MANHATTAN
AlterationPermit Issued04/29/202605/22/2026
Design AREA DESIGN, INC.
Owner SL GREEN REALTY CORP
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Interior renovation / modifications and demolition as per plans filed herewith. No change to use, egress, or occupancy.
M01058419 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off08/09/202409/26/2024
Design AREA DESIGN, INC.
Owner SL GREEN REALTY CORP
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Interior renovations and modifications as per plans filed herewith. No change to use, egress or occupancy.
M01058439 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off08/09/202409/26/2024
Design DEWBERRY ENGINEERS INC
Owner SL GREEN REALTY CORP
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Modifications to existing HVAC and ductwork as per plans filed herewith. No change to use, egress, or occupancy.
Counts cover all 9 projects (9 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
AREA DESIGN, INC.608/03/2026
DEWBERRY ENGINEERS INC306/17/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
JT MAGEN & COMPANY INC608/03/2026
LAB PLBG & HTG CO INC101/16/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
SL GREEN REALTY CORP608/03/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
A1 EXPEDITING SERVICE CORP.608/03/2026
9 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 9Open permit 4Signed off 3Filed only 2
Any typeAlteration 7No Work 2
9 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01426852 ↗51 EAST 42 STREET
MANHATTAN
AlterationPermit Issued08/03/202609/03/2026
Design AREA DESIGN, INC.
Owner SL GREEN REALTY CORP
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Interior renovation / modifications as per plans filed herewith. No change to use, egress, or occupancy.
M01412406 ↗51 EAST 42 STREET
MANHATTAN
AlterationPermit Issued06/17/202607/13/2026
Design DEWBERRY ENGINEERS INC
Contractor JT MAGEN & COMPANY INC
Modifications to existing HVAC and ductwork as per plans filed herewith. No change to use, egress, or occupancy.
M01412386 ↗51 EAST 42 STREET
MANHATTAN
AlterationPermit Issued06/16/202607/10/2026
Design AREA DESIGN, INC.
Owner SL GREEN REALTY CORP
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Interior demolition of existing tenant improvement space including non load bearing partitions as per plans filed herewith. No change in egr…
M01375121 ↗51 EAST 42 STREET
MANHATTAN
AlterationPermit Issued04/29/202605/22/2026
Design AREA DESIGN, INC.
Owner SL GREEN REALTY CORP
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Interior renovation / modifications and demolition as per plans filed herewith. No change to use, egress, or occupancy.
M01058419 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off08/09/202409/26/2024
Design AREA DESIGN, INC.
Owner SL GREEN REALTY CORP
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Interior renovations and modifications as per plans filed herewith. No change to use, egress or occupancy.
M01058439 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off08/09/202409/26/2024
Design DEWBERRY ENGINEERS INC
Owner SL GREEN REALTY CORP
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Modifications to existing HVAC and ductwork as per plans filed herewith. No change to use, egress, or occupancy.
M01100959 ↗51 EAST 42 STREET
MANHATTAN
No WorkFiled — no permit on record09/11/2024—
Design AREA DESIGN, INC.
—
M01058462 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off08/09/202408/27/2024
Design DEWBERRY ENGINEERS INC
Owner SL GREEN REALTY CORP
Contractor LAB PLBG & HTG CO INC
Filer A1 EXPEDITING SERVICE CORP.
Modification to existing plumbing fixtures as per plans filed herewith. No change in use, egress or occupancy.
M00349269 ↗51 EAST 42 STREET
MANHATTAN
No WorkFiled — no permit on record10/21/2020—
Design AREA DESIGN, INC.
—
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
51 EAST 42 STREET ↗908/03/2026
▾Documents — 49 on file (BIS + DOB NOW)
▸Plans & Drawings12
▸DOB NOWPlans/Sketch9
08/26/2026M01058419-P1 · 51 EAST 42 STREETRequest digital key ↗
08/26/2026M01058419-I1 · 51 EAST 42 STREETRequest digital key ↗
08/26/2026M01058462-I1 · 51 EAST 42 STREETRequest digital key ↗
Showing 3 of 9 on file for this type
▸DOB NOWPlans/Sketch - Place of Assembly3
08/26/2026M01100959-I1 · 51 EAST 42 STREETRequest digital key ↗
08/15/2026M00349269-P1 · 51 EAST 42 STREETRequest digital key ↗
08/14/2026M00349269-I1 · 51 EAST 42 STREETRequest digital key ↗
▸Seals & Professional Certifications26
▸DOB NOWDPL-1: Design Professional Seal & Signature12
08/26/2026M01058419-I1 · 51 EAST 42 STREETOpen ↗
08/26/2026M01058419-P1 · 51 EAST 42 STREETOpen ↗
08/26/2026M01058462-I1 · 51 EAST 42 STREETOpen ↗
Showing 3 of 12 on file for this type
▸DOB NOWProgress Inspector Seal & Signature11
09/01/2026M01058419-I1 · 51 EAST 42 STREETOpen ↗
09/01/2026M01375121-I1 · 51 EAST 42 STREETOpen ↗
09/01/2026M01412406-I1 · 51 EAST 42 STREETOpen ↗
Showing 3 of 11 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature3
09/01/2026M01412406-I1 · 51 EAST 42 STREETOpen ↗
08/28/2026M01058462-P1 · 51 EAST 42 STREETOpen ↗
08/26/2026M01058439-I1 · 51 EAST 42 STREETOpen ↗
▸Environmental & Asbestos11
▸DOB NOWOER: Notice to Proceed6
08/26/2026M01058462-I1 · 51 EAST 42 STREETOpen ↗
08/17/2026M01375121-I1 · 51 EAST 42 STREETOpen ↗
08/13/2026M01058419-I1 · 51 EAST 42 STREETOpen ↗
Showing 3 of 6 on file for this type
▸DOB NOWOER: Notice of Satisfaction5
08/17/2026M01375121-I1 · 51 EAST 42 STREETOpen ↗
08/13/2026M01058462-I1 · 51 EAST 42 STREETOpen ↗
08/13/2026M01058419-I1 · 51 EAST 42 STREETOpen ↗
Showing 3 of 5 on file for this type