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Design Firm
STROOP LLC
Design
3 projects with open permitsMANHATTAN · 11BROOKLYN · 1
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8 buildings
16
Total Filings
12
Projects on File
8
Buildings Worked
3
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month12 projects all-time
0123Jul '21 · 2Oct '21 · 1Mar '22 · 1Jun '22 · 1Sep '22 · 1Apr '23 · 2Nov '23 · 1Nov '24 · 1Nov '25 · 22022202320242025
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit325%
Signed off975%
By project type
Alteration11
Alteration CO1
Most active buildings
All buildings →
60 ORCHARD STREETMANHATTAN · 2 open · latest 04/06/2026
2 projects
331 COLUMBUS AVENUEMANHATTAN · latest 05/03/2023
2 projects
200 EAST 61 STREETMANHATTAN · latest 02/28/2024
2 projects
93 HUDSON STREETMANHATTAN · latest 12/08/2022
2 projects
33 5 AVENUEMANHATTAN · latest 06/02/2022
1 projects
41 5 AVENUEMANHATTAN · 1 open · latest 07/01/2022
1 projects
Key relationships
Everyone →
Filing representatives
5 projects
1 projects
1 projects
1 projects
People
All people →
KENNETH STROOPlatest 12/08/2025
9 filings
Filed under
STROOP LLC16
Identified by the contact ids of the people who file for the firm and by its email domain (stroop.design), not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01291066 ↗60 ORCHARD STREET
MANHATTAN
Alteration COPermit Issued11/24/202504/06/2026
Contractor J. SIBAJA KITCHEN AND VE*
Change in occupant loads in existing commercial space at cellar, 1st, and mezzanine levels.
M01291068 ↗60 ORCHARD STREET
MANHATTAN
AlterationPermit Issued11/24/202501/08/2026
Owner 60 Orchard Street LLC
Contractor J. SIBAJA KITCHEN AND VE*
Filer DVA Advisors
Structural work for sauna as shown on plans.
B01128367 ↗149 FRANKLIN STREET
BROOKLYN
AlterationSigned-off11/20/202405/23/2025
Owner DAX REAL ESTATE
Contractor HERTLER NADILE P & H, INC
Filer WILLIAM VITACCO ASSOCIATES
Plumbing and sprinkler work as shown on the plans.
M00959903 ↗200 EAST 61 STREET
MANHATTAN
AlterationSigned-off11/20/202302/28/2024
Owner OLSHAN PROPERTIES
Contractor LOD CONSTRUCTION LLC
Filer PROJECT TACTICAL SOLUTIONS
STRUCTURAL WORK IN CONJUNCTION WITH RENOVATION OF COMMERCIAL SPACE ON FIRST AND SECOND FLOORS TO INCLUDE REMOVAL OF CONVENIENCE STAIRS, INFI…
M00835804 ↗200 EAST 61 STREET
MANHATTAN
AlterationSigned-off04/06/202311/20/2023
Owner OLSHAN PROPERTIES
Contractor DOLPHIN CONSTRUCTION MANA
Filer PROJECT TACTICAL SOLUTIONS
GENERAL CONSTRUCTION WORK TO INCLUDE DEMO OF NON-LOAD BEARING PARTITIONS AND DOORS OF COMMERCIAL SPACE IN CELLAR, FIRST AND SECOND FLOORS. N…
M00843662 ↗331 COLUMBUS AVENUE
MANHATTAN
AlterationSigned-off04/06/202305/03/2023
Owner OLSHAN PROPERTIES
Contractor DOLPHIN CONSTRUCTION MANA
Filer PROJECT TACTICAL SOLUTIONS
INTERIOR RENOVATION ON THE CELLAR TO INCLUDE REMOVAL OF SHEET ROCK WALLS, FLOORING, AND CEILING, ETC. AS PER PLANS FILED HEREWITH. NO CHANGE…
Counts cover all 12 projects (12 DOB NOW). Dated by first filing; BIS projects by first permit issuance.
Every person filing for this firm, identified by their DOB NOW contact id (one id is one person). A person is listed under the firm they file for most.
PersonFilingsMost recent
KENNETH STROOP912/08/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
PATTI & ANTHES CONSULTING ENGINEERS308/14/2026
GILSANZ MURRAY STEFICEK LLP108/07/2024
ZENITH HOME INSPECTIONS108/14/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
DOLPHIN CONSTRUCTION MANA306/12/2023
EVERGREEN BUILDERS & CON*208/07/2023
J. SIBAJA KITCHEN AND VE*208/14/2026
LOD CONSTRUCTION LLC208/07/2024
ARCHSTONE BUILDERS LLC106/08/2022
CONCEPT GENERAL CONTRACTI103/25/2022
CUAN CORP103/18/2025
DEPENDABLE MECH CORP108/14/2026
DEPENDABLE MECHANICAL COR108/14/2026
HERTLER NADILE P & H, INC103/18/2025
HOMELINE CONSTRUCTION INC107/02/2021
PRISTINE AIR CONDITIONING103/18/2025
PSI PARTNERS, LLC103/18/2025
RUGOVA GROUP LLC108/07/2024
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
OLSHAN PROPERTIES508/07/2024
60 Orchard Street LLC108/14/2026
600 PARTNERS CO., L.P.106/08/2022
DAX REAL ESTATE103/18/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
PROJECT TACTICAL SOLUTIONS508/07/2024
BIG ORANGE EXPEDITING, INC107/02/2021
DVA Advisors108/14/2026
RIZZO GROUP106/08/2022
WILLIAM VITACCO ASSOCIATES103/18/2025
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
Any typeAlteration 11Alteration CO 1
12 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01291066 ↗60 ORCHARD STREET
MANHATTAN
Alteration COPermit Issued11/24/202504/06/2026
Contractor J. SIBAJA KITCHEN AND VE*
Change in occupant loads in existing commercial space at cellar, 1st, and mezzanine levels.
M01291068 ↗60 ORCHARD STREET
MANHATTAN
AlterationPermit Issued11/24/202501/08/2026
Owner 60 Orchard Street LLC
Contractor J. SIBAJA KITCHEN AND VE*
Filer DVA Advisors
Structural work for sauna as shown on plans.
B01128367 ↗149 FRANKLIN STREET
BROOKLYN
AlterationSigned-off11/20/202405/23/2025
Owner DAX REAL ESTATE
Contractor HERTLER NADILE P & H, INC
Filer WILLIAM VITACCO ASSOCIATES
Plumbing and sprinkler work as shown on the plans.
M00959903 ↗200 EAST 61 STREET
MANHATTAN
AlterationSigned-off11/20/202302/28/2024
Owner OLSHAN PROPERTIES
Contractor LOD CONSTRUCTION LLC
Filer PROJECT TACTICAL SOLUTIONS
STRUCTURAL WORK IN CONJUNCTION WITH RENOVATION OF COMMERCIAL SPACE ON FIRST AND SECOND FLOORS TO INCLUDE REMOVAL OF CONVENIENCE STAIRS, INFI…
M00835804 ↗200 EAST 61 STREET
MANHATTAN
AlterationSigned-off04/06/202311/20/2023
Owner OLSHAN PROPERTIES
Contractor DOLPHIN CONSTRUCTION MANA
Filer PROJECT TACTICAL SOLUTIONS
GENERAL CONSTRUCTION WORK TO INCLUDE DEMO OF NON-LOAD BEARING PARTITIONS AND DOORS OF COMMERCIAL SPACE IN CELLAR, FIRST AND SECOND FLOORS. N…
M00843662 ↗331 COLUMBUS AVENUE
MANHATTAN
AlterationSigned-off04/06/202305/03/2023
Owner OLSHAN PROPERTIES
Contractor DOLPHIN CONSTRUCTION MANA
Filer PROJECT TACTICAL SOLUTIONS
INTERIOR RENOVATION ON THE CELLAR TO INCLUDE REMOVAL OF SHEET ROCK WALLS, FLOORING, AND CEILING, ETC. AS PER PLANS FILED HEREWITH. NO CHANGE…
M00783293 ↗93 HUDSON STREET
MANHATTAN
AlterationSigned-off09/20/202212/08/2022
Owner OLSHAN PROPERTIES
Contractor EVERGREEN BUILDERS & CON*
Filer PROJECT TACTICAL SOLUTIONS
INTERIOR RENOVATION ON THE 12TH FLOOR TO INCLUDE REMOVAL OF NON-LOAD BEARING PARTITIONS AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRES…
M00526999 ↗41 5 AVENUE
MANHATTAN
AlterationPermit Issued07/02/202107/01/2022
Contractor HOMELINE CONSTRUCTION INC
Filer BIG ORANGE EXPEDITING, INC
APPLICATION FILED HEREWITH FOR INTERIOR RENOVATION AS PER PLANS, NO CHANGE IN USE, EGRESS OR OCCUPANCY.
M00727921 ↗600 MADISON AVENUE
MANHATTAN
AlterationSigned-off06/08/202206/15/2022
Owner 600 PARTNERS CO., L.P.
Contractor ARCHSTONE BUILDERS LLC
Filer RIZZO GROUP
Minor demolition with installation of new interior partitions, doors, suspended ceilings and finishes on the 14th floor (Stroop) as per plan…
M00559466 ↗33 5 AVENUE
MANHATTAN
AlterationSigned-off03/25/202206/02/2022
Contractor CONCEPT GENERAL CONTRACTI
APPLICATION FILED HEREWITH FOR INTERIOR APARTMENT RENOVATION OF APT. 5CD, WORK TO INCLUDE NEW FINISHINGS AND PLUMBING. NO CHANGE IN USE EGRE…
M00573995 ↗93 HUDSON STREET
MANHATTAN
AlterationSigned-off10/07/202110/14/2021
Contractor EVERGREEN BUILDERS & CON*
INTERIOR RENOVATION ON THE 12TH FLOOR TO INCLUDE REMOVAL OF NON-LOAD BEARING PARTITIONS AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRES…
M00543068 ↗331 COLUMBUS AVENUE
MANHATTAN
AlterationSigned-off07/30/202108/11/2021
Owner OLSHAN PROPERTIES
Contractor DOLPHIN CONSTRUCTION MANA
Filer PROJECT TACTICAL SOLUTIONS
INTERIOR DEMOLITION OF COMMERCIAL SPACE ON THE 1ST FLOOR AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
Scope of Work
HVAC — 1 project · most recent 08/14/2026
Air Conditioning Systems Heating and Air Conditioning Systems Ventilation Systems
Sprinkler / Standpipe — 1 project · most recent 08/14/2026
Sprinkler System
Plumbing — 1 project · most recent 08/14/2026
Water/Sanitary
Structural — 1 project · most recent 08/14/2026
Steel Concrete
Earthwork — 1 project · most recent 08/14/2026
Tenant Protection Plan 72 Hour
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
60 ORCHARD STREET ↗212/08/2025
149 FRANKLIN STREET ↗302/26/2025
200 EAST 61 STREET ↗211/08/2023
331 COLUMBUS AVENUE ↗303/14/2023
93 HUDSON STREET ↗307/28/2022
600 MADISON AVENUE ↗104/28/2022
41 5 AVENUE ↗105/21/2021
33 5 AVENUE ↗1—
▾Documents — 170 on file (BIS + DOB NOW)
▸Plans & Drawings28
▸DOB NOWPlans/Sketch28
09/03/2026M00526999-I1 · 41 5 AVENUERequest digital key ↗
09/03/2026M00543068-I1 · 331 COLUMBUS AVENUERequest digital key ↗
09/03/2026M00573995-I1 · 93 HUDSON STREETRequest digital key ↗
Showing 3 of 28 on file for this type
▸Applications & Permits8
▸DOB NOWLPC Approval/Permit8
09/03/2026M00573995-I1 · 93 HUDSON STREETOpen ↗
08/31/2026M00843662-I1 · 331 COLUMBUS AVENUEOpen ↗
08/13/2026M00843662-P1 · 331 COLUMBUS AVENUEOpen ↗
Showing 3 of 8 on file for this type
▸Seals & Professional Certifications94
▸DOB NOWSpecial Inspector Seal & Signature36
09/23/2026M01291068-S2 · 60 ORCHARD STREETOpen ↗
09/23/2026M01291068-I1 · 60 ORCHARD STREETOpen ↗
09/23/2026M01291068-S2 · 60 ORCHARD STREETOpen ↗
Showing 3 of 36 on file for this type
▸DOB NOWProgress Inspector Seal & Signature30
09/23/2026M00526999-I1 · 41 5 AVENUEOpen ↗
09/23/2026M00526999-I1 · 41 5 AVENUEOpen ↗
09/23/2026M01291068-I1 · 60 ORCHARD STREETOpen ↗
Showing 3 of 30 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature28
09/03/2026M00526999-I1 · 41 5 AVENUEOpen ↗
09/03/2026M00573995-I1 · 93 HUDSON STREETOpen ↗
09/02/2026M00559466-I1 · 33 5 AVENUEOpen ↗
Showing 3 of 28 on file for this type
▸Safety & Tenant Protection7
▸DOB NOWHPD-1: Anti-Harassment Area Checklist6
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 6 on file for this type
▸DOB NOWStreet Tree Checklist1
08/20/2026M01291066-I1 · 60 ORCHARD STREETOpen ↗
▸Environmental & Asbestos28
▸DOB NOWDEP ACP-5: Asbestos Assessment Report28
09/03/2026M00526999-I1 · 41 5 AVENUEOpen ↗
09/03/2026M00573995-I1 · 93 HUDSON STREETOpen ↗
09/02/2026M00559466-I1 · 33 5 AVENUEOpen ↗
Showing 3 of 28 on file for this type
▸Other Documents5
▸DOB NOWProof of Historic Building4
08/31/2026M00843662-I1 · 331 COLUMBUS AVENUEOpen ↗
08/13/2026M00783293-P1 · 93 HUDSON STREETOpen ↗
08/13/2026M00783293-I1 · 93 HUDSON STREETOpen ↗
Showing 3 of 4 on file for this type
▸DOB NOWProperty Ownership Certification1
08/20/2026M01291066-I1 · 60 ORCHARD STREETOpen ↗