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Contractor
TRI-COUNTY MECHANICAL LLC
General Contractor
3 projects with open permitsMANHATTAN · 7QUEENS · 1
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8 buildings
20
Total Filings
8
Projects on File
8
Buildings Worked
3
Projects w/ Open Permits
General Contractor
Primary Trade
Activity
Projects by first filing month8 projects all-time
0112Jul '19 · 1Jun '22 · 1Sep '22 · 1Feb '23 · 1Jan '24 · 1Jul '24 · 1Apr '25 · 1May '25 · 1202020212022202320242025
bars = month · line = 3-mo average
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Open permit338%
Signed off562%
By project type
Alteration8
Most active buildings
All buildings →
75 WARREN STREETMANHATTAN · 1 open · latest 04/24/2025
1 projects
104 READE STREETMANHATTAN · latest 04/04/2023
1 projects
215 BOWERYMANHATTAN · latest 08/12/2024
1 projects
366 LAFAYETTE STREETMANHATTAN · latest 09/20/2019
1 projects
161 PERRY STREETMANHATTAN · latest 05/19/2023
1 projects
113 WEST 17 STREETMANHATTAN · latest 07/22/2022
1 projects
Key relationships
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2 projects
1 projects
1 projects
1 projects
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1 projects
1 projects
1 projects
Owners
1 projects
1 projects
Most recent projects
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ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M00997959 ↗159 EAST 78 STREET
MANHATTAN
AlterationPermit Issued01/30/202408/06/2026
Design Haynes Architecture PC
Filer THOMAS E. HAYNES, ARCHITECT
PROPOSED PLUMBING ON FLOORS 001 THRU 003. REMOVAL, RELOCATION AND NEW PLUMBING FIXTURES PROPOSED AS PER PLANS FILED HEREWITH. NO CHANGE TO U…
Q01208427 ↗58-29 MASPETH AVENUE
QUEENS
AlterationPermit Issued05/01/202505/05/2025
Design NEW YORK ENGINEERING ASSOC., P.C.
Filer NEW YORK ENGINEERING
REPLACE TWO ROOFTOP HVAC UNITS.
M01204921 ↗75 WARREN STREET
MANHATTAN
AlterationPermit Issued04/24/202504/24/2025
Design NEW YORK ENGINEERING ASSOC., P.C.
Filer NEW YORK ENGINEERING
REPLACEMENT ROOFTOP CHILLER AC UNIT.
M01074466 ↗215 BOWERY
MANHATTAN
AlterationSigned-off07/18/202408/12/2024
Design COLLECTIF ENGINEERING PLLC
Filer ARCHVISION DESIGN STUDIO
PAA TO ADD AS-BUILT HVAC UNIT MODEL AND SERIAL NUMBERS
M00822084 ↗161 PERRY STREET
MANHATTAN
AlterationSigned-off02/14/202305/19/2023
Design B2 ENGINEERING PC
Installation of new HVAC VRF system. No change to use, egress, or occupancy.
M00784098 ↗104 READE STREET
MANHATTAN
AlterationSigned-off09/22/202204/04/2023
Design AVCON ENGINEERING PC
Owner PLUMP COSMETICS & INJECTABLES
Filer CROWN DESIGN & CONSULTING
Mechanical scope in conjunction with conversion of existing retail store (UG 6C) to ambulatory diagnostic & treatment health care office (UG…
Counts cover all 8 projects (8 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
NEW YORK ENGINEERING ASSOC., P.C.205/05/2025
AVCON ENGINEERING PC109/22/2022
B2 ENGINEERING PC102/14/2023
BARRY STRUCTURAL ENGINEERING, PLLC103/14/2025
COLLECTIF ENGINEERING PLLC110/04/2024
EP ENGINEERING LLC109/02/2022
FORUM ENGINNERING, P.C.107/18/2019
Haynes Architecture PC103/14/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
P.S.I. MECHANICAL103/14/2025
RADISA MLADENOVIC103/14/2025
VECTRA CONSTRUCTION CORP103/14/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
KANO107/18/2019
PLUMP COSMETICS & INJECTABLES109/22/2022
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
NEW YORK ENGINEERING205/05/2025
ARCHVISION DESIGN STUDIO110/04/2024
CROWN DESIGN & CONSULTING109/22/2022
PWF109/02/2022
THOMAS E. HAYNES, ARCHITECT103/14/2025
8 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 8Open permit 3Signed off 5
8 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M00997959 ↗159 EAST 78 STREET
MANHATTAN
AlterationPermit Issued01/30/202408/06/2026
Design Haynes Architecture PC
Filer THOMAS E. HAYNES, ARCHITECT
PROPOSED PLUMBING ON FLOORS 001 THRU 003. REMOVAL, RELOCATION AND NEW PLUMBING FIXTURES PROPOSED AS PER PLANS FILED HEREWITH. NO CHANGE TO U…
Q01208427 ↗58-29 MASPETH AVENUE
QUEENS
AlterationPermit Issued05/01/202505/05/2025
Design NEW YORK ENGINEERING ASSOC., P.C.
Filer NEW YORK ENGINEERING
REPLACE TWO ROOFTOP HVAC UNITS.
M01204921 ↗75 WARREN STREET
MANHATTAN
AlterationPermit Issued04/24/202504/24/2025
Design NEW YORK ENGINEERING ASSOC., P.C.
Filer NEW YORK ENGINEERING
REPLACEMENT ROOFTOP CHILLER AC UNIT.
M01074466 ↗215 BOWERY
MANHATTAN
AlterationSigned-off07/18/202408/12/2024
Design COLLECTIF ENGINEERING PLLC
Filer ARCHVISION DESIGN STUDIO
PAA TO ADD AS-BUILT HVAC UNIT MODEL AND SERIAL NUMBERS
M00822084 ↗161 PERRY STREET
MANHATTAN
AlterationSigned-off02/14/202305/19/2023
Design B2 ENGINEERING PC
Installation of new HVAC VRF system. No change to use, egress, or occupancy.
M00784098 ↗104 READE STREET
MANHATTAN
AlterationSigned-off09/22/202204/04/2023
Design AVCON ENGINEERING PC
Owner PLUMP COSMETICS & INJECTABLES
Filer CROWN DESIGN & CONSULTING
Mechanical scope in conjunction with conversion of existing retail store (UG 6C) to ambulatory diagnostic & treatment health care office (UG…
M00763095 ↗113 WEST 17 STREET
MANHATTAN
AlterationSigned-off06/27/202207/22/2022
Design EP ENGINEERING LLC
Filer PWF
MECHANICAL MODIFICATIONS TO INCLUDE HVAC REPLACEMENT AND REPLACEMENT OF ASSOCIATED DUCTWORK. NO CHANGE TO USE, OCCUPANCY OR EGRESS
M00195031 ↗366 LAFAYETTE STREET
MANHATTAN
AlterationSigned-off07/18/201909/20/2019
Design FORUM ENGINNERING, P.C.
Owner KANO
Installation of supplemental HVAC system in 1st Floor. No change of use group, occupancy or egress.
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
159 EAST 78 STREET ↗107/08/2026
215 BOWERY ↗107/08/2026
58-29 MASPETH AVENUE ↗303/21/2026
366 LAFAYETTE STREET ↗303/21/2026
104 READE STREET ↗303/21/2026
75 WARREN STREET ↗303/21/2026
161 PERRY STREET ↗303/21/2026
113 WEST 17 STREET ↗303/21/2026
▾Documents — 98 on file (BIS + DOB NOW)
▸Plans & Drawings15
▸DOB NOWPlans/Sketch14
09/02/2026M00763095-I1 · 113 WEST 17 STREETRequest digital key ↗
09/02/2026M00763095-P1 · 113 WEST 17 STREETRequest digital key ↗
09/01/2026M00784098-I1 · 104 READE STREETRequest digital key ↗
Showing 3 of 14 on file for this type
▸DOB NOWPlans/Sketch - Mechanical Systems1
09/05/2026M00195031-I1 · 366 LAFAYETTE STREETRequest digital key ↗
▸Applications & Permits7
▸DOB NOWLPC Approval/Permit7
08/27/2026M00997959-I1 · 159 EAST 78 STREETOpen ↗
08/13/2026M00195031-I1 · 366 LAFAYETTE STREETOpen ↗
08/13/2026M00784098-I1 · 104 READE STREETOpen ↗
Showing 3 of 7 on file for this type
▸Seals & Professional Certifications64
▸DOB NOWProgress Inspector Seal & Signature33
09/01/2026M00822084-I1 · 161 PERRY STREETOpen ↗
09/01/2026M00822084-I1 · 161 PERRY STREETOpen ↗
09/01/2026M00822084-I1 · 161 PERRY STREETOpen ↗
Showing 3 of 33 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature16
09/01/2026M00822084-I1 · 161 PERRY STREETOpen ↗
09/01/2026M00822084-I1 · 161 PERRY STREETOpen ↗
09/01/2026M00997959-I1 · 159 EAST 78 STREETOpen ↗
Showing 3 of 16 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature15
09/02/2026M00763095-I1 · 113 WEST 17 STREETOpen ↗
09/02/2026M00763095-P1 · 113 WEST 17 STREETOpen ↗
09/01/2026M00784098-I1 · 104 READE STREETOpen ↗
Showing 3 of 15 on file for this type
▸Safety & Tenant Protection1
▸DOB NOWTenant Protection Plan1
08/13/2026M00195031-I1 · 366 LAFAYETTE STREETOpen ↗
▸Environmental & Asbestos9
▸DOB NOWDEP ACP-5: Asbestos Assessment Report9
09/02/2026M00763095-P1 · 113 WEST 17 STREETOpen ↗
09/02/2026M00763095-I1 · 113 WEST 17 STREETOpen ↗
09/01/2026M00784098-I1 · 104 READE STREETOpen ↗
Showing 3 of 9 on file for this type
▸Energy Compliance1
▸DOB NOWPreliminary Commissioning Report Certification1
08/13/2026M00822084-I1 · 161 PERRY STREETOpen ↗
▸Other Documents1
▸DOB NOWProof of Historic Building1
08/13/2026M00784098-I1 · 104 READE STREETOpen ↗