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Tenant
Brooklyn Arts Bax
Tenant
BROOKLYN · 3
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1 building
3
Total Filings
3
Projects on File
1
Buildings Worked
0
Projects w/ Open Permits
Tenant
Primary Trade
Activity
Not enough dated projects to chart.
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Signed off3100%
By project type
Alteration3
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421 FIFTH AVENUEBROOKLYN · latest 07/30/2024
3 projects
Key relationships
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Design firms
2 projects
1 projects
Filing representatives
2 projects
Contractors
2 projects
1 projects
Most recent projects
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ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B01030106 ↗421 FIFTH AVENUE
BROOKLYN
AlterationSigned-off05/02/202407/30/2024
Design DERIVE ENGINEERS
Contractor DEMAR MECHANICAL INC
Herewith filing removal and installation of plumbing fixtures, as per plans submitted. There is no change to use, egress or occupancy under…
B01030075 ↗421 FIFTH AVENUE
BROOKLYN
AlterationSigned-off05/02/202407/23/2024
Design DERIVE ENGINEERS
Contractor LEGACY BUILDERS/DEVELOPER
Filer J. CALLAHAN CONSULTING, INC.
Herewith filing installation of a mechanical system, as per plans submitted. There is no change to use, egress or occupancy under this appl…
B01030044 ↗421 FIFTH AVENUE
BROOKLYN
AlterationSigned-off05/01/202407/11/2024
Design TLZ ARCHITECTURE DPC
Contractor LEGACY BUILDERS/DEVELOPER
Filer J. CALLAHAN CONSULTING, INC.
Herewith filing interior alteration work on the 2nd and 3rd floors, as per plans submitted. There is no change to use, egress or occupancy …
Counts cover all 3 projects (3 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
Derive Engineers207/22/2025
TLZ Architecture107/30/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Legacy Builders/Developer207/30/2025
Demar Mechanical105/02/2024
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
J. Callahan Consulting207/30/2025
3 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 3Signed off 3
3 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B01030106 ↗421 FIFTH AVENUE
BROOKLYN
AlterationSigned-off05/02/202407/30/2024
Design DERIVE ENGINEERS
Contractor DEMAR MECHANICAL INC
Herewith filing removal and installation of plumbing fixtures, as per plans submitted. There is no change to use, egress or occupancy under…
B01030075 ↗421 FIFTH AVENUE
BROOKLYN
AlterationSigned-off05/02/202407/23/2024
Design DERIVE ENGINEERS
Contractor LEGACY BUILDERS/DEVELOPER
Filer J. CALLAHAN CONSULTING, INC.
Herewith filing installation of a mechanical system, as per plans submitted. There is no change to use, egress or occupancy under this appl…
B01030044 ↗421 FIFTH AVENUE
BROOKLYN
AlterationSigned-off05/01/202407/11/2024
Design TLZ ARCHITECTURE DPC
Contractor LEGACY BUILDERS/DEVELOPER
Filer J. CALLAHAN CONSULTING, INC.
Herewith filing interior alteration work on the 2nd and 3rd floors, as per plans submitted. There is no change to use, egress or occupancy …
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
421 FIFTH AVENUE ↗307/30/2025
▾Documents — 35 on file (BIS + DOB NOW)
▸Plans & Drawings5
▸DOB NOWPlans/Sketch5
08/25/2026B01030075-P1 · 421 FIFTH AVENUERequest digital key ↗
08/25/2026B01030106-I1 · 421 FIFTH AVENUERequest digital key ↗
08/21/2026B01030044-P1 · 421 FIFTH AVENUERequest digital key ↗
Showing 3 of 5 on file for this type
▸Seals & Professional Certifications25
▸DOB NOWProgress Inspector Seal & Signature14
08/28/2026B01030044-P1 · 421 FIFTH AVENUEOpen ↗
08/28/2026B01030044-P1 · 421 FIFTH AVENUEOpen ↗
08/28/2026B01030044-P1 · 421 FIFTH AVENUEOpen ↗
Showing 3 of 14 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature6
08/28/2026B01030044-P1 · 421 FIFTH AVENUEOpen ↗
08/26/2026B01030075-I1 · 421 FIFTH AVENUEOpen ↗
08/26/2026B01030075-I1 · 421 FIFTH AVENUEOpen ↗
Showing 3 of 6 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature5
08/25/2026B01030075-I1 · 421 FIFTH AVENUEOpen ↗
08/25/2026B01030106-I1 · 421 FIFTH AVENUEOpen ↗
08/21/2026B01030044-I1 · 421 FIFTH AVENUEOpen ↗
Showing 3 of 5 on file for this type
▸Environmental & Asbestos5
▸DOB NOWDEP ACP-5: Asbestos Assessment Report5
08/25/2026B01030075-I1 · 421 FIFTH AVENUEOpen ↗
08/25/2026B01030106-I1 · 421 FIFTH AVENUEOpen ↗
08/21/2026B01030044-P1 · 421 FIFTH AVENUEOpen ↗
Showing 3 of 5 on file for this type