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Design Firm
ARCH LIU INC.
Design
2 projects with open permitsMANHATTAN · 4
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4 buildings
8
Total Filings
4
Projects on File
4
Buildings Worked
2
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month4 projects all-time
0112Oct '24 · 1Aug '25 · 1Apr '26 · 1Aug '26 · 1Oct '24Jan '25Apr '25Jul '25Oct '25Jan '26Apr '26Jul '26Aug '26
bars = month · line = 3-mo average
Portfolio status
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Open permit250%
Signed off250%
By project type
Alteration4
Most active buildings
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480 PARK AVENUEMANHATTAN · latest 11/22/2024
1 projects
211 EAST 51 STREETMANHATTAN · latest 10/29/2025
1 projects
845 WEST END AVENUEMANHATTAN · 1 open · latest 06/10/2026
1 projects
75 WALL STREETMANHATTAN · 1 open · latest 08/31/2026
1 projects
Key relationships
Everyone →
Contractors
2 projects
2 projects
1 projects
MERCURY BUILDING ASSO INC
1 projects
People
All people →
yuchen liulatest 07/30/2026
5 filings
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01439143 ↗75 WALL STREET
MANHATTAN
AlterationPermit Issued08/17/202608/31/2026—General construction for unit#24K interior, including new partition. No change in use, egress or occupancy.
M01383040 ↗845 WEST END AVENUE
MANHATTAN
AlterationPermit Issued04/16/202606/10/2026
Contractor HOMEPRO GENERAL CONTRACTING
RENOVATIONS TO EXISTING APARTMENT AS PER PLAN. NO CHANGE IN USE, EGRESS, OR OCCUPANCYPROPOSED UNDER THIS APPLICATION
M01260291 ↗211 EAST 51 STREET
MANHATTAN
AlterationSigned-off08/15/202510/29/2025
Contractor HOMEPRO GENERAL CONTRACTI
PROPOSED PLUMBING WORK IN THE APT 5B ON THE FIFTH FLOOR AS PER PLAN, NO CHANGE IN USE, EGRESS OR OCCUPANCY UNDER THIS APPLICATION.
M01133398 ↗480 PARK AVENUE
MANHATTAN
AlterationSigned-off10/29/202411/22/2024
Contractor 360 PRESTIGE CONTRACTING
Renovation to apartment 2G, at 2nd floor. Partition, finish, fixture work. No change to use, egress or occupancy.
Counts cover all 4 projects (4 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
yuchen liu507/30/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
HOMEPRO GENERAL CONTRACTI204/16/2026
PARAMOUNT SERVICES, LLC204/16/2026
360 PRESTIGE CONTRACTING110/29/2024
MERCURY BUILDING ASSO INC108/17/2026
4 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 4Open permit 2Signed off 2
4 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01439143 ↗75 WALL STREET
MANHATTAN
AlterationPermit Issued08/17/202608/31/2026—General construction for unit#24K interior, including new partition. No change in use, egress or occupancy.
M01383040 ↗845 WEST END AVENUE
MANHATTAN
AlterationPermit Issued04/16/202606/10/2026
Contractor HOMEPRO GENERAL CONTRACTING
RENOVATIONS TO EXISTING APARTMENT AS PER PLAN. NO CHANGE IN USE, EGRESS, OR OCCUPANCYPROPOSED UNDER THIS APPLICATION
M01260291 ↗211 EAST 51 STREET
MANHATTAN
AlterationSigned-off08/15/202510/29/2025
Contractor HOMEPRO GENERAL CONTRACTI
PROPOSED PLUMBING WORK IN THE APT 5B ON THE FIFTH FLOOR AS PER PLAN, NO CHANGE IN USE, EGRESS OR OCCUPANCY UNDER THIS APPLICATION.
M01133398 ↗480 PARK AVENUE
MANHATTAN
AlterationSigned-off10/29/202411/22/2024
Contractor 360 PRESTIGE CONTRACTING
Renovation to apartment 2G, at 2nd floor. Partition, finish, fixture work. No change to use, egress or occupancy.
Scope of Work
Plumbing — 2 projects · most recent 04/16/2026
Water/Sanitary Gas
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
75 WALL STREET ↗107/30/2026
845 WEST END AVENUE ↗304/05/2026
211 EAST 51 STREET ↗308/20/2025
480 PARK AVENUE ↗1—
▾Documents — 44 on file (BIS + DOB NOW)
▸Plans & Drawings8
▸DOB NOWPlans/Sketch8
08/25/2026M01133398-I1 · 480 PARK AVENUERequest digital key ↗
08/22/2026M01439143-I1 · 75 WALL STREETRequest digital key ↗
08/22/2026M01260291-S1 · 211 EAST 51 STREETRequest digital key ↗
Showing 3 of 8 on file for this type
▸Applications & Permits3
▸DOB NOWLPC Approval/Permit3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸Seals & Professional Certifications29
▸DOB NOWProgress Inspector Seal & Signature14
08/31/2026M01439143-I1 · 75 WALL STREETOpen ↗
08/31/2026M01439143-I1 · 75 WALL STREETOpen ↗
08/31/2026M01439143-I1 · 75 WALL STREETOpen ↗
Showing 3 of 14 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature8
09/01/2026M01383040-S1 · 845 WEST END AVENUEOpen ↗
08/31/2026M01439143-I1 · 75 WALL STREETOpen ↗
08/27/2026M01383040-S2 · 845 WEST END AVENUEOpen ↗
Showing 3 of 8 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature7
08/22/2026M01260291-S1 · 211 EAST 51 STREETOpen ↗
08/22/2026M01260291-I1 · 211 EAST 51 STREETOpen ↗
08/18/2026M01439143-I1 · 75 WALL STREETOpen ↗
Showing 3 of 7 on file for this type
▸Environmental & Asbestos4
▸DOB NOWDEP ACP-5: Asbestos Assessment Report4
08/22/2026M01260291-S1 · 211 EAST 51 STREETOpen ↗
08/18/2026M01439143-I1 · 75 WALL STREETOpen ↗
08/15/2026M01260291-I1 · 211 EAST 51 STREETOpen ↗
Showing 3 of 4 on file for this type