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Entity
BlackRock
Tenant
4 projects with open permitsMANHATTAN · 49
4 buildings
49
Total Filings
49
Projects on File
4
Buildings Worked
4
Projects w/ Open Permits
Tenant
Primary Trade
Activity
Projects by first filing month49 projects all-time
071421Mar '21 · 19Jul '21 · 2Aug '21 · 1Sep '21 · 4Oct '21 · 2Sep '22 · 1Jan '23 · 3Feb '23 · 2Jun '24 · 2Jan '25 · 2Mar '25 · 1Apr '25 · 4Jun '25 · 2Nov '25 · 2Jan '26 · 1Jun '26 · 120222023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit48%
Signed off4388%
Filed only24%
By project type
Alteration47
No Work2
Most active buildings
All buildings →
427 10 AVENUEMANHATTAN · 1 open · latest 06/30/2026
38 projects
51 WEST 52 STREETMANHATTAN · 3 open · latest 02/19/2026
7 projects
49 EAST 52 STREETMANHATTAN · latest 03/04/2023
2 projects
57 EAST 52 STREETMANHATTAN · latest 02/06/2023
2 projects
Key relationships
Everyone →
Filing representatives
17 projects
12 projects
1 projects
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01396208 ↗427 10 AVENUE
MANHATTAN
AlterationPermit Issued06/17/202606/30/2026
Design TED MOUDIS ASSOCIATES
Owner 50 HYMC OWNER LLC
Contractor JRM CONSTRUCTION MGMT LLC
Filer RIZZO GROUP
MECHANICAL MODIFICATIONS TAKING PLACE ON 14TH & 15TH FLOOR AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M01335931 ↗51 WEST 52 STREET
MANHATTAN
AlterationPermit Issued01/29/202602/19/2026
Design VOCON
Owner HARBOR GROUP MANAGEMENT COMPANY
Contractor DK CONSTRUCTION ONE, CORP
Filer BURNHAM NATIONWIDE INC
Interior Demo to existing 3rd floor office space as per plans submitted herewith. No Change to Use, Occupancy Group, or Egress
M01176866 ↗51 WEST 52 STREET
MANHATTAN
AlterationSigned-off04/21/202512/18/2025
Design AMA CONSULTING ENGINEERS, PC
Contractor DK CONSTRUCTION ONE, CORP
Modifications to the existing HVAC system on the 17th floor (Core Restroom & Corridor) as per plans. No change to use, egress or occupancy.
M01307733 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off11/07/202512/04/2025
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor SOH PAR SPRINKLER LLC
Filer RIZZO GROUP
SPRINKLER MODIFICATIONS TAKING PLACE ON 9TH FL AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M01307727 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off11/07/202511/17/2025
Design THE SWITZER GROUP
Owner 50 HYMC OWNER LLC
Contractor INTEGRAL CONSTRUCTION OF
Filer RIZZO GROUP
GENERAL CONSTRUCTION TAKING PLACE ON 9TH FL AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M01162491 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off06/23/202507/30/2025
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor ABCO-PEERLESS SPRKLR CORP
Filer RIZZO GROUP
SPRINKLER MODIFICATIONS TAKING PLACE ON 18TH FLOOR AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
Counts cover all 49 projects (49 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
SYSKA HENNESSY GROUP3007/30/2026
AMA CONSULTING ENGINEERS, PC504/21/2025
NBBJ ARCHITECTURE, PLLC508/11/2022
THE SWITZER GROUP311/07/2025
DIAZ ARCHITECTS INC.,PA209/17/2024
OFFICE OF JAMES RUDERMAN209/17/2024
VOCON202/02/2026
FMC ENGINEERING102/02/2026
TED MOUDIS ASSOCIATES107/30/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
JT MAGEN & COMPANY INC1207/14/2023
PAR PLUMBING CO., INC709/10/2024
PAR FIRE PROTECTION LLC501/03/2025
VERSATILE SERVICES LLC409/17/2024
DEPENDABLE MECHANICAL COR302/02/2026
DK CONSTRUCTION ONE, CORP302/02/2026
DEPENDABLE MECH CORP202/02/2026
INTEGRAL CONSTRUCTION OF211/07/2025
PREFERRED MECHANICAL INC209/14/2021
PREFERRED SPKLR AND MECH208/11/2022
STRUCTURE TONE, LLC208/07/2025
ABCO-PEERLESS SPRKLR CORP108/07/2025
AGGRESSIVE FIRE PROT LLC111/07/2025
JAMES E FITZGERALD INC109/29/2022
JRM CONSTRUCTION MGMT LLC107/30/2026
PACE PLUMBING CORP110/15/2024
SIRINA FIRE PROT CORP108/11/2022
SOH PAR SPRINKLER LLC111/07/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
50 HYMC OWNER LLC3007/30/2026
HARBOR GROUP MANAGEMENT502/02/2026
49 EAST 52ND STREET LEASEHOLD LLC209/17/2024
PARK AVENUE PLAZA OWNER LLC209/17/2024
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
RIZZO GROUP1707/30/2026
A1 EXPEDITING SERVICE CORP.1207/14/2023
BURNHAM NATIONWIDE INC102/02/2026
49 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 49Open permit 4Signed off 43Filed only 2
Any typeAlteration 47No Work 2
49 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01396208 ↗427 10 AVENUE
MANHATTAN
AlterationPermit Issued06/17/202606/30/2026
Design TED MOUDIS ASSOCIATES
Owner 50 HYMC OWNER LLC
Contractor JRM CONSTRUCTION MGMT LLC
Filer RIZZO GROUP
MECHANICAL MODIFICATIONS TAKING PLACE ON 14TH & 15TH FLOOR AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M01335931 ↗51 WEST 52 STREET
MANHATTAN
AlterationPermit Issued01/29/202602/19/2026
Design VOCON
Owner HARBOR GROUP MANAGEMENT COMPANY
Contractor DK CONSTRUCTION ONE, CORP
Filer BURNHAM NATIONWIDE INC
Interior Demo to existing 3rd floor office space as per plans submitted herewith. No Change to Use, Occupancy Group, or Egress
M01176866 ↗51 WEST 52 STREET
MANHATTAN
AlterationSigned-off04/21/202512/18/2025
Design AMA CONSULTING ENGINEERS, PC
Contractor DK CONSTRUCTION ONE, CORP
Modifications to the existing HVAC system on the 17th floor (Core Restroom & Corridor) as per plans. No change to use, egress or occupancy.
M01307733 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off11/07/202512/04/2025
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor SOH PAR SPRINKLER LLC
Filer RIZZO GROUP
SPRINKLER MODIFICATIONS TAKING PLACE ON 9TH FL AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M01307727 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off11/07/202511/17/2025
Design THE SWITZER GROUP
Owner 50 HYMC OWNER LLC
Contractor INTEGRAL CONSTRUCTION OF
Filer RIZZO GROUP
GENERAL CONSTRUCTION TAKING PLACE ON 9TH FL AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M01162491 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off06/23/202507/30/2025
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor ABCO-PEERLESS SPRKLR CORP
Filer RIZZO GROUP
SPRINKLER MODIFICATIONS TAKING PLACE ON 18TH FLOOR AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M01162474 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off06/23/202507/09/2025
Design THE SWITZER GROUP
Contractor STRUCTURE TONE, LLC
GENERAL CONSTRUCTION TAKING PLACE ON 18TH FLOOR AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M01176869 ↗51 WEST 52 STREET
MANHATTAN
AlterationSigned-off03/26/202506/02/2025
Design AMA CONSULTING ENGINEERS, PC
Owner HARBOR GROUP MANAGEMENT COMPANY
Contractor A&H EXPRESS PLBG&HTG CORP
Filer RIZZO GROUP
Removal of plumbing fixtures and associated piping on the 17th floors (Core Restroom& Corridor as per plans. No change to use, egress or occ…
M01176871 ↗51 WEST 52 STREET
MANHATTAN
AlterationPermit Issued04/09/202506/01/2025
Design AMA CONSULTING ENGINEERS, PC
Owner HARBOR GROUP MANAGEMENT COMPANY
Contractor DEPENDABLE MECHANICAL COR
Filer RIZZO GROUP
Modifications to the existing sprinkler system on the 17th floor (Core Restroom & Corridor) as per plans. No change to use, egress or occupa…
M01176883 ↗51 WEST 52 STREET
MANHATTAN
AlterationSigned-off04/21/202505/29/2025
Design AMA CONSULTING ENGINEERS, PC
Owner HARBOR GROUP MANAGEMENT COMPANY
Contractor DK CONSTRUCTION ONE, CORP
Filer RIZZO GROUP
Modifications to the existing HVAC system on the 17th floor (Demo &Whitebox) as per plans. No change to use, egress or occupancy.
M01176889 ↗51 WEST 52 STREET
MANHATTAN
AlterationSigned-off04/21/202505/22/2025
Design AMA CONSULTING ENGINEERS, PC
Owner HARBOR GROUP MANAGEMENT COMPANY
Contractor DEPENDABLE MECHANICAL COR
Filer RIZZO GROUP
Modifications to the existing sprinkler system on the 17th floor (Demo &White box) as per plans. No change to use, egress or occupancy.
M01143291 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off01/06/202501/23/2025
Design THE SWITZER GROUP
Owner 50 HYMC OWNER LLC
Contractor INTEGRAL CONSTRUCTION OF
Filer RIZZO GROUP
GENERAL CONSTRUCTION TAKING PLACE ON THE 11TH FLOORS AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M01143295 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off01/03/202501/23/2025
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor LAWRENCE J. LEVINE
Filer RIZZO GROUP
SPRINKLER MODIFICATIONS TAKING PLACE ON 11TH FLOOR AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M08055650 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off01/12/202309/16/2024
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor PAR PLUMBING CO., INC
Filer RIZZO GROUP
Modification to plumbing and sprinkler systems as per plans filed herewith.
M01057697 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off06/24/202407/22/2024
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor MANENGEERING BUREAU, INC
Filer RIZZO GROUP
SPRINKLER/STANDIPE MODIFICATIONS TAKING PLACE ON 18TH FLOOR AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M01052077 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off06/24/202407/10/2024
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor STRUCTURE TONE, LLC
Filer RIZZO GROUP
MECHANICAL MODIFICATIONS TAKING PLACE ON 18TH FLOOR AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M00808859 ↗49 EAST 52 STREET
MANHATTAN
AlterationSigned-off01/30/202303/04/2023
Design OFFICE OF JAMES RUDERMAN
Owner 49 EAST 52ND STREET LEASEHOLD LLC
Contractor VERSATILE SERVICES LLC
Filer RIZZO GROUP
Structural modifications taking place on the 4-5th floors as indicated on the drawings.
M00808655 ↗49 EAST 52 STREET
MANHATTAN
AlterationSigned-off02/01/202302/06/2023
Design DIAZ ARCHITECTS INC.,PA
Owner 49 EAST 52ND STREET LEASEHOLD LLC
Contractor VERSATILE SERVICES LLC
Filer RIZZO GROUP
Construction modifications taking place on the 4th & 5th floors as indicated on the drawings.
M00808902 ↗57 EAST 52 STREET
MANHATTAN
AlterationSigned-off02/01/202302/06/2023
Design DIAZ ARCHITECTS INC.,PA
Owner PARK AVENUE PLAZA OWNER LLC
Contractor VERSATILE SERVICES LLC
Filer RIZZO GROUP
Construction modifications taking place on the 3rd & 4th floors Construction/6th & 7th floors marketing as indicated on the drawings.
M00809127 ↗57 EAST 52 STREET
MANHATTAN
AlterationSigned-off01/30/202302/02/2023
Design OFFICE OF JAMES RUDERMAN
Owner PARK AVENUE PLAZA OWNER LLC
Contractor VERSATILE SERVICES LLC
Filer RIZZO GROUP
Structural modifications taking place on the 3rd & 4th floors (6th & 7th Marketing floors) as indicated on the drawings.
M00784650 ↗51 WEST 52 STREET
MANHATTAN
AlterationPermit Issued09/29/202210/07/2022
Design VOCON
Contractor JAMES E FITZGERALD INC
Architectural modifications (Lobby Renovation) as per plans. No change to use, egress or occupancy.
M00430382 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/30/202109/23/2022
Design SYSKA HENNESSY GROUP
Contractor JT MAGEN & COMPANY INC
FILING FOR MODIFICATIONS TO EXISTING HVAC SYSTEM AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY UNDER THIS APPLICATION.
M00430223 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/30/202109/21/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor PAR PLUMBING CO., INC
Filer A1 EXPEDITING SERVICE CORP.
FILING FOR MODIFICATIONS TO EXISTING PLUMBING FIXTURES AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY UNDER THIS APPLICA…
M00430853 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/30/202109/13/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
additions modifications to existing mechanical systems
M00430885 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/30/202109/13/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
ADDITIONS MODIFICATIONS TO EXISTING MECHANICAL SYSTEM. AS PER PLANS FILED HEREWITH NO CHANGE IN USE, EGRESS OR OCCUPANCY.
M00430205 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/30/202109/12/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
FILING FOR MODIFICATIONS TO EXISTING HVAC SYSTEM AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY UNDER THIS APPLICATION.
M00430448 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/30/202109/12/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Modification to existing HVAC system as per plans filed herewith. No change in use, egress or occupancy under this application.
M00430595 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/30/202109/12/2022
Design SYSKA HENNESSY GROUP
Contractor JT MAGEN & COMPANY INC
additions and modifications to existing mechanical system as per plans filed herewith. no change in use, egress or occupancy
M00430783 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/30/202109/12/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
ADDITIONS MODIFICATIONS TO EXISTING MECHANICAL SYSTEM AS PER PLANS FILED HEREWITH. NO CHANGE IN USE,EGRESS OR OCCUPANCY.
M00430797 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/30/202109/12/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
Modification to HVAC system as per plans filed herewith. No change in use, egress or occupancy under this application.
M00546756 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off07/13/202109/12/2022
Design NBBJ ARCHITECTURE, PLLC
Contractor JT MAGEN & COMPANY INC
Fur-out uneven drywall partitions and provide new 14 h. raised floor system throughout the elevator lobbies and core corridors. No change in…
M00575467 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off09/20/202109/12/2022
Design NBBJ ARCHITECTURE, PLLC
Owner 50 HYMC OWNER LLC
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
INTERIOR RENOVATION AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, OCCUPANCY OR EGRESS.
M00575474 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off09/14/202109/12/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
MODIFICATIONS TO MECHANICAL SYSTEMS AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, OCCUPANCY OR EGRESS.
M00430618 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/29/202109/08/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor PAR PLUMBING CO., INC
Filer A1 EXPEDITING SERVICE CORP.
ADDITIONS MODIFICATIONS TO EXISTING PLUMBING FIXTURES AS PER PLANS FILED HEREWITH. NO CHANGE IN USE , EGRESS OR OCCUPANCY.
M00430810 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/29/202109/07/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor PREFERRED MECHANICAL INC
Filer A1 EXPEDITING SERVICE CORP.
Installation of new plumbing fixtures in pantry and restroom as per plans filed herewith. No change in use, egress or occupancy under this a…
M00430839 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/29/202109/06/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor PREFERRED SPKLR AND MECH
Filer A1 EXPEDITING SERVICE CORP.
Installation of new sprinkler heads and standpipe fire hose valves as per plans filed herewith. No change in use, egress or occupancy under …
M00575480 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off09/14/202109/06/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor PREFERRED SPKLR AND MECH
Filer A1 EXPEDITING SERVICE CORP.
MODIFICATION TO STANDPIPE AND SPRINKLER SYSTEMS AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, OCCUPANCY OR EGRESS.
M00430518 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off08/03/202108/30/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor SIRINA FIRE PROT CORP
Filer A1 EXPEDITING SERVICE CORP.
Installation of new sprinkler heads and standpipe fire hose valve as per plans filed herewith. No change in use, egress or occupancy under t…
M00430647 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/29/202107/27/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor LAWRENCE J. LEVINE
Filer A1 EXPEDITING SERVICE CORP.
ADDITIONS MODIIFICATIONS TO EXISTING SPRIKLER SYSTEM AS PER PLANS FILED HEREWITH. NO CHANGE IN USE EGRESS OR OCCUPANCY.
M00430733 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/30/202107/27/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor LAWRENCE J. LEVINE
Filer A1 EXPEDITING SERVICE CORP.
ADDITIONS/MODIFICATIONS TO EXISTING SPRINKLER/STANDPIPE SYSTEM AS SHOWN ON DRAWINGS FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
M00430394 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/29/202107/15/2022
Design SYSKA HENNESSY GROUP
Contractor LAWRENCE J. LEVINE
Installation of new sprinkler heads as per plans filed herewith. No change in use, egress or occupancy under this application.
M00430214 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/29/202106/30/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor PAR PLUMBING CO., INC
Filer A1 EXPEDITING SERVICE CORP.
ADDITIONS/ MODIFICATIONS TO EXISTING PLUMBING SYSTEM AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS OR OCCUPANCY
M00430468 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/29/202106/30/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor PAR PLUMBING CO., INC
Filer A1 EXPEDITING SERVICE CORP.
Installation of new plumbing fixtures in pantry and restrooms as per plans filed herewith. No change to use, egress or occupancy under this …
M00430791 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/29/202106/30/2022
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor PAR PLUMBING CO., INC
Filer A1 EXPEDITING SERVICE CORP.
ADDITIONS MODIFICATIONS TO EXISTING PLUMBING SYSTEM AS PER PLANS FILED HEREWITH. NO CHANGE IN USE EGRESS OR OCCUPANCY.
M00430882 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off03/29/202111/12/2021
Design SYSKA HENNESSY GROUP
Contractor PAR PLUMBING CO., INC
additions modifications to existing plumbing system as per plans filed herewith. no change in use egress or occupancy.
M00595292 ↗427 10 AVENUE
MANHATTAN
No WorkFiled — no permit on record10/25/2021—
Design NBBJ ARCHITECTURE, PLLC
—
M00595311 ↗427 10 AVENUE
MANHATTAN
No WorkFiled — no permit on record10/25/2021—
Design NBBJ ARCHITECTURE, PLLC
—
M00539071 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off07/13/202109/30/2021
Design NBBJ ARCHITECTURE, PLLC
Owner 50 HYMC OWNER LLC
Contractor JT MAGEN & COMPANY INC
Filer A1 EXPEDITING SERVICE CORP.
filing temp office mock up on 16th floor as per approved AI1 dated 5.26.21 No associated applications for this scope of work. This applicati…
M00575477 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off09/14/202109/22/2021
Design SYSKA HENNESSY GROUP
Owner 50 HYMC OWNER LLC
Contractor PREFERRED MECHANICAL INC
Filer A1 EXPEDITING SERVICE CORP.
MODIFICATION TO PLUMBING SYSTEMS AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, OCCUPANCY OR EGRESS.
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
427 10 AVENUE ↗3807/30/2026
51 WEST 52 STREET ↗702/02/2026
49 EAST 52 STREET ↗209/17/2024
57 EAST 52 STREET ↗209/17/2024
▾Documents — 535 on file (BIS + DOB NOW)
▸Plans & Drawings104
▸DOB NOWPlans/Sketch46
09/03/2026M00539071-I1 · 427 10 AVENUERequest digital key ↗
09/03/2026M00539071-P1 · 427 10 AVENUERequest digital key ↗
09/03/2026M00546756-I1 · 427 10 AVENUERequest digital key ↗
Showing 3 of 46 on file for this type
▸DOB NOWPlans/Sketch - Plumbing19
09/04/2026M00430468-P1 · 427 10 AVENUERequest digital key ↗
09/04/2026M00430468-I1 · 427 10 AVENUERequest digital key ↗
09/04/2026M00430882-I1 · 427 10 AVENUERequest digital key ↗
Showing 3 of 19 on file for this type
▸DOB NOWPlans/Sketch - Sprinkler13
09/04/2026M00430394-I1 · 427 10 AVENUERequest digital key ↗
09/04/2026M00430647-I1 · 427 10 AVENUERequest digital key ↗
09/03/2026M00430733-I1 · 427 10 AVENUERequest digital key ↗
Showing 3 of 13 on file for this type
▸DOB NOWPlans/Sketch - Mechanical Systems13
09/03/2026M00430205-I1 · 427 10 AVENUERequest digital key ↗
09/03/2026M00430205-P1 · 427 10 AVENUERequest digital key ↗
09/03/2026M00430885-P1 · 427 10 AVENUERequest digital key ↗
Showing 3 of 13 on file for this type
▸DOB NOWPlans/Sketch - Standpipe11
09/03/2026M00430733-P2 · 427 10 AVENUERequest digital key ↗
09/03/2026M00430733-P1 · 427 10 AVENUERequest digital key ↗
09/03/2026M00430733-I1 · 427 10 AVENUERequest digital key ↗
Showing 3 of 11 on file for this type
▸DOB NOWPlans/Sketch - Place of Assembly2
09/03/2026M00595292-I1 · 427 10 AVENUERequest digital key ↗
08/15/2026M00595311-I1 · 427 10 AVENUERequest digital key ↗
▸Applications & Permits20
▸DOB NOWHPD Certification Letter or CPC Special Permit13
09/01/2026M00430885-I1 · 427 10 AVENUEOpen ↗
09/01/2026M00430595-I1 · 427 10 AVENUEOpen ↗
08/13/2026M00575467-P1 · 427 10 AVENUEOpen ↗
Showing 3 of 13 on file for this type
▸DOB NOWLPC Approval/Permit7
08/13/2026M01335931-S1 · 51 WEST 52 STREETOpen ↗
08/13/2026M01176883-I1 · 51 WEST 52 STREETOpen ↗
08/13/2026M01176869-I1 · 51 WEST 52 STREETOpen ↗
Showing 3 of 7 on file for this type
▸Seals & Professional Certifications240
▸DOB NOWProgress Inspector Seal & Signature93
09/23/2026M00808859-I1 · 49 EAST 52 STREETOpen ↗
09/02/2026M01162474-P1 · 427 10 AVENUEOpen ↗
09/02/2026M01162474-P1 · 427 10 AVENUEOpen ↗
Showing 3 of 93 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature83
09/04/2026M00430394-I1 · 427 10 AVENUEOpen ↗
09/04/2026M00430882-I1 · 427 10 AVENUEOpen ↗
09/04/2026M00430810-I1 · 427 10 AVENUEOpen ↗
Showing 3 of 83 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature64
09/23/2026M00808859-I1 · 49 EAST 52 STREETOpen ↗
09/23/2026M00808859-I1 · 49 EAST 52 STREETOpen ↗
09/23/2026M00808859-I1 · 49 EAST 52 STREETOpen ↗
Showing 3 of 64 on file for this type
▸Safety & Tenant Protection64
▸DOB NOWHPD-1: Anti-Harassment Area Checklist45
09/04/2026M00430810-I1 · 427 10 AVENUEOpen ↗
09/03/2026M00430223-I1 · 427 10 AVENUEOpen ↗
09/03/2026M00539071-I1 · 427 10 AVENUEOpen ↗
Showing 3 of 45 on file for this type
▸DOB NOWCertificate of No Harassment17
09/03/2026M00539071-I1 · 427 10 AVENUEOpen ↗
09/01/2026M00430595-I1 · 427 10 AVENUEOpen ↗
08/13/2026M00430853-I1 · 427 10 AVENUEOpen ↗
Showing 3 of 17 on file for this type
▸DOB NOWHPD-1 Anti-Harassment Area Checklist2
09/01/2026M00430595-I1 · 427 10 AVENUEOpen ↗
09/01/2026M00430618-I1 · 427 10 AVENUEOpen ↗
▸Environmental & Asbestos96
▸DOB NOWOER: Notice to Proceed52
09/04/2026M00430810-I1 · 427 10 AVENUEOpen ↗
09/03/2026M00430223-I1 · 427 10 AVENUEOpen ↗
09/03/2026M00539071-I1 · 427 10 AVENUEOpen ↗
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▸DOB NOWOER: Notice of Satisfaction27
09/04/2026M00430810-I1 · 427 10 AVENUEOpen ↗
09/03/2026M00430223-I1 · 427 10 AVENUEOpen ↗
09/03/2026M00575474-I1 · 427 10 AVENUEOpen ↗
Showing 3 of 27 on file for this type
▸DOB NOWDEP ACP-5: Asbestos Assessment Report17
09/01/2026M00784650-I1 · 51 WEST 52 STREETOpen ↗
09/01/2026M00808859-P1 · 49 EAST 52 STREETOpen ↗
09/01/2026M00808859-I1 · 49 EAST 52 STREETOpen ↗
Showing 3 of 17 on file for this type
▸Energy Compliance10
▸DOB NOWEN2: As Built Energy Analysis.9
09/03/2026M00575474-I1 · 427 10 AVENUEOpen ↗
08/13/2026M00430797-I1 · 427 10 AVENUEOpen ↗
08/13/2026M00430448-I1 · 427 10 AVENUEOpen ↗
Showing 3 of 9 on file for this type
▸DOB NOWPreliminary Commissioning Report Certification1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Other Documents1
▸DOB NOWProof of Historic Building1
08/13/2026M01335931-I1 · 51 WEST 52 STREETOpen ↗