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Design Firm
GAVIN KWAN PE
Design
1 project with open permitsBROOKLYN · 6QUEENS · 1
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7 buildings
8
Total Filings
7
Projects on File
7
Buildings Worked
1
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month7 projects all-time
0112Aug '20 · 1Jan '21 · 1Jun '21 · 1Jul '21 · 1Dec '23 · 1May '24 · 1Jun '24 · 12021202220232024
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit114%
Signed off457%
Filed only229%
By project type
Alteration5
New Building1
ALT-CO - New Building with Existing Elements to Remain1
Most active buildings
All buildings →
4617 7 AVENUEBROOKLYN · latest 12/14/2023
1 projects
426 2 STREETBROOKLYN · latest 06/19/2024
1 projects
854 51 STREETBROOKLYN · latest 06/21/2021
1 projects
1027 65 STREETBROOKLYN · latest 01/13/2021
1 projects
725 45 STREETBROOKLYN · latest 08/10/2021
1 projects
269 BAINBRIDGE STREETBROOKLYN · 1 open · latest 12/19/2025
1 projects
Key relationships
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Filing representatives
2 projects
2 projects
1 projects
Owners
1 projects
1 projects
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B00960234 ↗269 BAINBRIDGE STREET
BROOKLYN
New BuildingPermit Issued05/16/202412/19/2025
Owner SD DESIGN STUDIO LLC
Contractor WING JAY CONSTRUCTION INC
Filer SD DESIGN STUDIO LLC
THE DRAWINGS HEREIN ARE RELATED TO A NEW 4-STORY BUILDING WITHOUT CELLAR. THE MAIN LATERAL SYSTEM OF THE BUILDING IS COMPOSED OF ORDINARY RE…
B01058500 ↗426 2 STREET
BROOKLYN
AlterationFiled — no permit on record06/19/2024—
Owner 491 COURT LLC
Filer SD DESIGN STUDIO LLC
—
B00975948 ↗4617 7 AVENUE
BROOKLYN
ALT-CO - New Building with Existing Elements to RemainFiled — no permit on record12/14/2023—
Filer HTX BUILDING CONSULTING
—
Q00383747 ↗211-11 NORTHERN BOULEVARD
QUEENS
AlterationSigned-off08/31/202010/18/2021
Contractor RRP PLUMBING CORP
FILE THIS APPLICATION TO REMOVE (2) GAS BOILERS AND (1) H.W.H.. INSTALL (1) NEW COMBI. BOILER IN CELLAR. WORK IN BOILER ROOM ONLY. NO CHANGE…
B00557765 ↗725 45 STREET
BROOKLYN
AlterationSigned-off07/14/202108/10/2021
Contractor JABBIE INDUSTRIES INCORP*
Filer VIBEN BUILDING LLC
INSTALL BEAM STEEL AT CELLAR 1ST AND 2ND FLOOR.
B00457584 ↗854 51 STREET
BROOKLYN
AlterationSigned-off06/14/202106/21/2021
Contractor CATMAN PLUMBING INC
Filer VIBEN BUILDING LLC
INSTALL NEW PLUMBING FIXTURES AT 1ST THRU 4TH FLOOR AND ROOF.
Counts cover all 7 projects (7 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
NYX ENGINEERING, PLLC210/05/2022
JIAN ENGINEERING PLLC107/30/2026
JIMENEZ BUILDING CONSULTING LLC107/30/2026
VIBEN BUILDING LLC110/05/2022
YANG ENGINEERING LLC107/30/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
CATMAN PLUMBING INC210/05/2022
DYNAMIC PLBG & SPRKLR COR107/30/2026
DYNAMIC PLBNG & SPRKR COR107/30/2026
JABBIE INDUSTRIES INCORP*107/14/2021
RRP PLUMBING CORP111/16/2021
WING JAY CONSTRUCTION INC107/30/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
491 COURT LLC105/14/2025
SD DESIGN STUDIO LLC107/30/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
SD DESIGN STUDIO LLC207/30/2026
VIBEN BUILDING LLC206/26/2022
HTX BUILDING CONSULTING103/20/2024
7 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 7Open permit 1Signed off 4Filed only 2
Any typeAlteration 5New Building 1ALT-CO - New Building with Existing Elements to Remain 1
7 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B00960234 ↗269 BAINBRIDGE STREET
BROOKLYN
New BuildingPermit Issued05/16/202412/19/2025
Owner SD DESIGN STUDIO LLC
Contractor WING JAY CONSTRUCTION INC
Filer SD DESIGN STUDIO LLC
THE DRAWINGS HEREIN ARE RELATED TO A NEW 4-STORY BUILDING WITHOUT CELLAR. THE MAIN LATERAL SYSTEM OF THE BUILDING IS COMPOSED OF ORDINARY RE…
B01058500 ↗426 2 STREET
BROOKLYN
AlterationFiled — no permit on record06/19/2024—
Owner 491 COURT LLC
Filer SD DESIGN STUDIO LLC
—
B00975948 ↗4617 7 AVENUE
BROOKLYN
ALT-CO - New Building with Existing Elements to RemainFiled — no permit on record12/14/2023—
Filer HTX BUILDING CONSULTING
—
Q00383747 ↗211-11 NORTHERN BOULEVARD
QUEENS
AlterationSigned-off08/31/202010/18/2021
Contractor RRP PLUMBING CORP
FILE THIS APPLICATION TO REMOVE (2) GAS BOILERS AND (1) H.W.H.. INSTALL (1) NEW COMBI. BOILER IN CELLAR. WORK IN BOILER ROOM ONLY. NO CHANGE…
B00557765 ↗725 45 STREET
BROOKLYN
AlterationSigned-off07/14/202108/10/2021
Contractor JABBIE INDUSTRIES INCORP*
Filer VIBEN BUILDING LLC
INSTALL BEAM STEEL AT CELLAR 1ST AND 2ND FLOOR.
B00457584 ↗854 51 STREET
BROOKLYN
AlterationSigned-off06/14/202106/21/2021
Contractor CATMAN PLUMBING INC
Filer VIBEN BUILDING LLC
INSTALL NEW PLUMBING FIXTURES AT 1ST THRU 4TH FLOOR AND ROOF.
B00393380 ↗1027 65 STREET
BROOKLYN
AlterationSigned-off01/07/202101/13/2021
Contractor CATMAN PLUMBING INC
FILING FOR PLUMBING WORK TYPE FOR INTERIOR RENOVATION OF EXISTING TWO STORY BUILDING WITH CELLAR. NO CHANGE IN USE, EGRESS,OR OCCUPANCY.
Scope of Work
HVAC — 2 projects · most recent 07/30/2026
Heating and Air Conditioning Systems
Plumbing — 2 projects · most recent 07/30/2026
Storm Water/Sanitary Gas
Structural — 1 project · most recent 07/30/2026
Steel Concrete Masonry
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
269 BAINBRIDGE STREET ↗111/22/2024
426 2 STREET ↗105/29/2024
4617 7 AVENUE ↗112/12/2023
1027 65 STREET ↗210/05/2022
725 45 STREET ↗107/14/2021
854 51 STREET ↗1—
211-11 NORTHERN BOULEVARD ↗1—
▾Documents — 177 on file (BIS + DOB NOW)
▸Plans & Drawings29
▸DOB NOWPlans/Sketch19
08/25/2026B00975948-S3 · 4617 7 AVENUERequest digital key ↗
08/25/2026B00975948-I1 · 4617 7 AVENUERequest digital key ↗
08/25/2026B00975948-S4 · 4617 7 AVENUERequest digital key ↗
Showing 3 of 19 on file for this type
▸DOB NOWPlans/Sketch - Plumbing10
09/01/2026B00457584-P1 · 854 51 STREETRequest digital key ↗
09/01/2026B00457584-I1 · 854 51 STREETRequest digital key ↗
09/01/2026B00393380-P2 · 1027 65 STREETRequest digital key ↗
Showing 3 of 10 on file for this type
▸Zoning, Tax Lot & Property Records8
▸DOB NOWZD1: DOB Zoning Diagram4
08/13/2026B00975948-I1 · 4617 7 AVENUEOpen ↗
Showing 1 of 4 on file for this type
▸DOB NOWZoning Exhibit form (1-5)3
08/13/2026B00975948-I1 · 4617 7 AVENUEOpen ↗
Showing 1 of 3 on file for this type
▸DOB NOWHouse Number Verification: TOPO Stamp1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Seals & Professional Certifications85
▸DOB NOWSpecial Inspector Seal & Signature29
09/29/2026B00960234-S3 · 269 BAINBRIDGE STREETOpen ↗
09/02/2026Q00383747-P2 · 211-11 NORTHERN BOULEVARDOpen ↗
09/01/2026Q00383747-I1 · 211-11 NORTHERN BOULEVARDOpen ↗
Showing 3 of 29 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature28
08/25/2026B00975948-S3 · 4617 7 AVENUEOpen ↗
08/25/2026B00975948-S1 · 4617 7 AVENUEOpen ↗
08/25/2026B00975948-I1 · 4617 7 AVENUEOpen ↗
Showing 3 of 28 on file for this type
▸DOB NOWProgress Inspector Seal & Signature28
09/29/2026B00960234-S3 · 269 BAINBRIDGE STREETOpen ↗
09/29/2026B00960234-S3 · 269 BAINBRIDGE STREETOpen ↗
09/02/2026Q00383747-P2 · 211-11 NORTHERN BOULEVARDOpen ↗
Showing 3 of 28 on file for this type
▸Trade Schedules & Equipment4
▸DOB NOWDEP: Sewer Certification (Sanitary/Storm)4
08/13/2026B00975948-I1 · 4617 7 AVENUEOpen ↗
Showing 1 of 4 on file for this type
▸Safety & Tenant Protection5
▸DOB NOWStreet Tree Checklist3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸DOB NOWStreet Trees Site Plan1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Environmental & Asbestos19
▸DOB NOWDEP ACP-5: Asbestos Assessment Report11
08/13/2026B01058500-I1 · 426 2 STREETOpen ↗
08/13/2026B00457584-P2 · 854 51 STREETOpen ↗
08/13/2026B00457584-P1 · 854 51 STREETOpen ↗
Showing 3 of 11 on file for this type
▸DOB NOWOER: Notice to Proceed8
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 8 on file for this type
▸Energy Compliance2
▸DOB NOWEN2: As Built Energy Analysis.2
08/13/2026B00457584-I1 · 854 51 STREETOpen ↗
Showing 1 of 2 on file for this type
▸Inspections & Test Reports8
▸DOB NOWSOIL REPORT5
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 5 on file for this type
▸DOB NOWTR4 Test Report and Plot Diagram3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸Other Documents17
▸DOB NOWSite Survey: Initial5
08/13/2026B00975948-I1 · 4617 7 AVENUEOpen ↗
08/13/2026B00975948-S3 · 4617 7 AVENUEOpen ↗
Showing 2 of 5 on file for this type
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone5
09/01/2026B00960234-I1 · 269 BAINBRIDGE STREETOpen ↗
09/01/2026B00960234-P1 · 269 BAINBRIDGE STREETOpen ↗
Showing 2 of 5 on file for this type
▸DOB NOWWaiver Document3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸DOB NOWProperty Ownership Certification3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸DOB NOWAdjoining Owners Notification1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type