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Design Firm
YU BUILDING CONSULTANT DESIGN ENGR.
Design
3 projects with open permitsMANHATTAN · 3BROOKLYN · 2STATEN ISLAND · 1
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5 buildings
12
Total Filings
6
Projects on File
5
Buildings Worked
3
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month6 projects all-time
0123Dec '19 · 1Mar '20 · 1Apr '25 · 1Jul '26 · 2Aug '26 · 12020202120222023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit350%
Signed off350%
By project type
Alteration6
Most active buildings
All buildings →
74 DIAMOND STREETBROOKLYN · latest 01/21/2025
2 projects
255 WEST 70 STREETMANHATTAN · 1 open · latest 08/18/2026
1 projects
24 WEST 56 STREETMANHATTAN · 1 open · latest 07/11/2025
1 projects
445 EAST 78 STREETMANHATTAN · 1 open · latest 07/15/2026
1 projects
68 TRENT STREETSTATEN ISLAND · latest 07/21/2026
1 projects
Key relationships
Everyone →
Filing representatives
2 projects
1 projects
Owners
2 projects
1 projects
1 projects
People
All people →
YU JIANGlatest 08/04/2026
8 filings
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01440833 ↗255 WEST 70 STREET
MANHATTAN
AlterationPermit Issued08/14/202608/18/2026
Contractor LT PRO CONSTRUCTION INC
Filer EPAC BUILDING CONSULTING INC
interior removal of existing partitions and finishes as per plans. no change in use, egress or occupancy.
S01428896 ↗68 TRENT STREET
STATEN ISLAND
AlterationSigned-off07/18/202607/21/2026
Contractor LT PRO CONSTRUCTION INC
Filer NYC BUILDING CONSULTANTS
FILE FOR INTERIOR REPAIR AND INSTALLATION OF NEW GLASS SLIDING DOOR TO ADDRESS DOB COMPLAINT #5196933. NO CHANGE TO USE, EGRESS, OR OCCUPANC…
M01423816 ↗445 EAST 78 STREET
MANHATTAN
AlterationPermit Issued07/01/202607/15/2026
Owner WITNICK MANAGEMENT LLC
Contractor LT PRO CONSTRUCTION INC
Filer NYC BUILDING CONSULTANTS
FILE PLUMBING WORK OF PROPOSED SUSHI RESTAURANT WITH NEW NEW GREASE TRAP AND PLUMBING FIXTURE AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUP…
M01206098 ↗24 WEST 56 STREET
MANHATTAN
AlterationPermit Issued04/30/202507/11/2025
Owner MR
Contractor AMERICAN STANDARD PLUMBIN
To legalize work without a permit for the sprinkler system.
B00270874 ↗74 DIAMOND STREET
BROOKLYN
AlterationSigned-off03/02/202001/21/2025
Owner 74 DIAMOND LLC
Contractor BELLEROSE PLBG & HTG
PROPOSED PLUMBING WORK AND FIRE PROTECTION SERVICES FOR 4 STORY 6 FAMILIES NEW RESIDENTIAL BUILDING WITH PENTHOUSE AND CELLAR.
B00272488 ↗74 DIAMOND STREET
BROOKLYN
AlterationSigned-off12/04/201907/12/2024
Owner 74 DIAMOND LLC
Contractor ZCREW CONSTRUCTION CORP
Filer YBL NY INC
propose the new mechanical systems for the 4-story residential building.
Counts cover all 6 projects (6 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
YU JIANG808/04/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
LT PRO CONSTRUCTION INC308/14/2026
AMERICAN STANDARD P&H COR108/11/2026
AMERICAN STANDARD PLUMBIN104/30/2025
BELLEROSE PLBG & HEATING108/01/2025
BELLEROSE PLBG & HTG108/01/2025
DPH PLUMBING & HTG CORP108/01/2025
ZCREW CONSTRUCTION CORP109/23/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
74 DIAMOND LLC209/23/2025
MR.104/30/2025
WITNICK MANAGEMENT LLC108/11/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
NYC BUILDING CONSULTANTS208/11/2026
EPAC BUILDING CONSULTING INC108/14/2026
6 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 6Open permit 3Signed off 3
6 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01440833 ↗255 WEST 70 STREET
MANHATTAN
AlterationPermit Issued08/14/202608/18/2026
Contractor LT PRO CONSTRUCTION INC
Filer EPAC BUILDING CONSULTING INC
interior removal of existing partitions and finishes as per plans. no change in use, egress or occupancy.
S01428896 ↗68 TRENT STREET
STATEN ISLAND
AlterationSigned-off07/18/202607/21/2026
Contractor LT PRO CONSTRUCTION INC
Filer NYC BUILDING CONSULTANTS
FILE FOR INTERIOR REPAIR AND INSTALLATION OF NEW GLASS SLIDING DOOR TO ADDRESS DOB COMPLAINT #5196933. NO CHANGE TO USE, EGRESS, OR OCCUPANC…
M01423816 ↗445 EAST 78 STREET
MANHATTAN
AlterationPermit Issued07/01/202607/15/2026
Owner WITNICK MANAGEMENT LLC
Contractor LT PRO CONSTRUCTION INC
Filer NYC BUILDING CONSULTANTS
FILE PLUMBING WORK OF PROPOSED SUSHI RESTAURANT WITH NEW NEW GREASE TRAP AND PLUMBING FIXTURE AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUP…
M01206098 ↗24 WEST 56 STREET
MANHATTAN
AlterationPermit Issued04/30/202507/11/2025
Owner MR
Contractor AMERICAN STANDARD PLUMBIN
To legalize work without a permit for the sprinkler system.
B00270874 ↗74 DIAMOND STREET
BROOKLYN
AlterationSigned-off03/02/202001/21/2025
Owner 74 DIAMOND LLC
Contractor BELLEROSE PLBG & HTG
PROPOSED PLUMBING WORK AND FIRE PROTECTION SERVICES FOR 4 STORY 6 FAMILIES NEW RESIDENTIAL BUILDING WITH PENTHOUSE AND CELLAR.
B00272488 ↗74 DIAMOND STREET
BROOKLYN
AlterationSigned-off12/04/201907/12/2024
Owner 74 DIAMOND LLC
Contractor ZCREW CONSTRUCTION CORP
Filer YBL NY INC
propose the new mechanical systems for the 4-story residential building.
Scope of Work
HVAC — 1 project · most recent 08/11/2026
Ventilation Systems
Sprinkler / Standpipe — 1 project · most recent 04/30/2025
No specific sub-scope on file — project count only.
Plumbing — 1 project · most recent 08/11/2026
Water/Sanitary
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
255 WEST 70 STREET ↗108/04/2026
445 EAST 78 STREET ↗307/31/2026
68 TRENT STREET ↗107/09/2026
24 WEST 56 STREET ↗104/04/2025
74 DIAMOND STREET ↗611/26/2019
▾Documents — 103 on file (BIS + DOB NOW)
▸Plans & Drawings20
▸DOB NOWPlans/Sketch6
08/23/2026M01206098-I1 · 24 WEST 56 STREETRequest digital key ↗
08/16/2026M01423816-S1 · 445 EAST 78 STREETRequest digital key ↗
08/16/2026M01423816-I1 · 445 EAST 78 STREETRequest digital key ↗
Showing 3 of 6 on file for this type
▸DOB NOWPlans/Sketch - Plumbing5
09/02/2026B00270874-I1 · 74 DIAMOND STREETRequest digital key ↗
09/02/2026B00270874-P2 · 74 DIAMOND STREETRequest digital key ↗
09/02/2026B00270874-P1 · 74 DIAMOND STREETRequest digital key ↗
Showing 3 of 5 on file for this type
▸DOB NOWPlans/Sketch - Sprinkler5
09/02/2026B00270874-P2 · 74 DIAMOND STREETRequest digital key ↗
09/02/2026B00270874-I1 · 74 DIAMOND STREETRequest digital key ↗
09/02/2026B00270874-P1 · 74 DIAMOND STREETRequest digital key ↗
Showing 3 of 5 on file for this type
▸DOB NOWPlans/Sketch - Mechanical Systems4
08/26/2026B00272488-I1 · 74 DIAMOND STREETRequest digital key ↗
08/26/2026B00272488-P2 · 74 DIAMOND STREETRequest digital key ↗
Showing 2 of 4 on file for this type
▸Applications & Permits1
▸DOB NOWLPC Approval/Permit1
08/16/2026M01440833-I1 · 255 WEST 70 STREETOpen ↗
▸Seals & Professional Certifications71
▸DOB NOWProgress Inspector Seal & Signature39
09/01/2026B00270874-I1 · 74 DIAMOND STREETOpen ↗
09/01/2026B00270874-I1 · 74 DIAMOND STREETOpen ↗
09/01/2026B00270874-I1 · 74 DIAMOND STREETOpen ↗
Showing 3 of 39 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature20
09/01/2026B00270874-I1 · 74 DIAMOND STREETOpen ↗
09/01/2026B00270874-I1 · 74 DIAMOND STREETOpen ↗
09/01/2026B00270874-I1 · 74 DIAMOND STREETOpen ↗
Showing 3 of 20 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature12
08/16/2026M01423816-S1 · 445 EAST 78 STREETOpen ↗
08/16/2026M01423816-I1 · 445 EAST 78 STREETOpen ↗
08/16/2026M01423816-P1 · 445 EAST 78 STREETOpen ↗
Showing 3 of 12 on file for this type
▸Environmental & Asbestos9
▸DOB NOWDEP ACP-5: Asbestos Assessment Report9
08/16/2026M01423816-I1 · 445 EAST 78 STREETOpen ↗
08/16/2026M01423816-P1 · 445 EAST 78 STREETOpen ↗
08/16/2026M01423816-S1 · 445 EAST 78 STREETOpen ↗
Showing 3 of 9 on file for this type
▸Energy Compliance2
▸DOB NOWPreliminary Commissioning Report Certification2
08/26/2026B00272488-I1 · 74 DIAMOND STREETOpen ↗
Showing 1 of 2 on file for this type