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Tenant
P.S. 21K
Tenant · filed under 2 names
BROOKLYN · 7
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1 building
7
Total Filings
7
Projects on File
1
Buildings Worked
0
Projects w/ Open Permits
Tenant
Primary Trade
Activity
Projects by first filing month7 projects all-time
0134Jun '23 · 2Aug '23 · 1Jul '26 · 3Aug '26 · 1202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Signed off343%
Filed only457%
By project type
Alteration7
Most active buildings
All buildings →
180 CHAUNCEY STREETBROOKLYN · latest 08/25/2026
7 projects
Key relationships
Everyone →
Design firms
6 projects
Filing representatives
6 projects
Contractors
3 projects
Filed under
PS21K4PS21k3
Identified by the contact ids of the people who file for the firm and by its email domain, not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B01436699180 CHAUNCEY STREET
BROOKLYN
AlterationFiled — no permit on record08/25/2026———
B01420157180 CHAUNCEY STREET
BROOKLYN
AlterationFiled — no permit on record07/14/2026—
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Filer DSENY ENGINEERING SERVICES,PC
—
B01420167180 CHAUNCEY STREET
BROOKLYN
AlterationFiled — no permit on record07/14/2026—
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Filer DSENY ENGINEERING SERVICES,PC
—
B01425341180 CHAUNCEY STREET
BROOKLYN
AlterationFiled — no permit on record07/14/2026—
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Filer DSENY ENGINEERING SERVICES,PC
—
B00894408180 CHAUNCEY STREET
BROOKLYN
AlterationSigned-off06/23/202309/04/2025
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Contractor AKM CONSTRUCTION SERVICE*
Filer DSENY ENGINEERING SERVICES,PC
SF/PS21K - FOR TEMPORARY CONSTRUCTION EQUIPMENT(SCAFFOLD) SUBMITTING ON BEHALF OF CONTRACTOR, RELATED TO JOB B00568919. NO CHANGE IN USE, OC…
B00889498180 CHAUNCEY STREET
BROOKLYN
AlterationSigned-off06/23/202309/03/2025
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Contractor AKM CONSTRUCTION SERVICE*
Filer DSENY ENGINEERING SERVICES,PC
FN/PS21K - FOR TEMPORARY CONSTRUCTION EQUIPMENT(FENCE) SUBMITTING ON BEHALF OF CONTRACTOR, RELATED TO JOB B00568919. NO CHANGE IN USE, OCCUP…
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
Dseny Engineering Services607/14/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Akm Construction Service*304/23/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
NYC School Construction Authority607/14/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Dseny Engineering Services607/14/2026
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 7Signed off 3Filed only 4
7 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B01436699180 CHAUNCEY STREET
BROOKLYN
AlterationFiled — no permit on record08/25/2026———
B01420157180 CHAUNCEY STREET
BROOKLYN
AlterationFiled — no permit on record07/14/2026—
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Filer DSENY ENGINEERING SERVICES,PC
—
B01420167180 CHAUNCEY STREET
BROOKLYN
AlterationFiled — no permit on record07/14/2026—
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Filer DSENY ENGINEERING SERVICES,PC
—
B01425341180 CHAUNCEY STREET
BROOKLYN
AlterationFiled — no permit on record07/14/2026—
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Filer DSENY ENGINEERING SERVICES,PC
—
B00894408180 CHAUNCEY STREET
BROOKLYN
AlterationSigned-off06/23/202309/04/2025
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Contractor AKM CONSTRUCTION SERVICE*
Filer DSENY ENGINEERING SERVICES,PC
SF/PS21K - FOR TEMPORARY CONSTRUCTION EQUIPMENT(SCAFFOLD) SUBMITTING ON BEHALF OF CONTRACTOR, RELATED TO JOB B00568919. NO CHANGE IN USE, OC…
B00889498180 CHAUNCEY STREET
BROOKLYN
AlterationSigned-off06/23/202309/03/2025
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Contractor AKM CONSTRUCTION SERVICE*
Filer DSENY ENGINEERING SERVICES,PC
FN/PS21K - FOR TEMPORARY CONSTRUCTION EQUIPMENT(FENCE) SUBMITTING ON BEHALF OF CONTRACTOR, RELATED TO JOB B00568919. NO CHANGE IN USE, OCCUP…
B00894432180 CHAUNCEY STREET
BROOKLYN
AlterationSigned-off08/15/202312/03/2024
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Contractor AKM CONSTRUCTION SERVICE*
Filer DSENY ENGINEERING SERVICES,PC
SOE/PS21K - FOR TEMPORARY SUPPORT OF EXCAVATION SUBMITTING ON BEHALF OF CONTRACTOR, RELATED TO JOB B00568919, B00889498 . NO CHANGE IN USE, …
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
180 CHAUNCEY STREET ↗708/25/2026
▾Documents — 58 on file (BIS + DOB NOW)
▸Plans & Drawings9
▸DOB NOWPlans/Sketch9
08/27/2026B00894432-I1 · 180 CHAUNCEY STREETRequest digital key ↗
08/26/2026B01436699-I1 · 180 CHAUNCEY STREETRequest digital key ↗
08/26/2026B00889498-P1 · 180 CHAUNCEY STREETRequest digital key ↗
Showing 3 of 9 on file for this type
▸Seals & Professional Certifications11
▸DOB NOWDPL-1: Design Professional Seal & Signature9
08/27/2026B00894408-I1 · 180 CHAUNCEY STREETOpen ↗
08/26/2026B01436699-I1 · 180 CHAUNCEY STREETOpen ↗
08/26/2026B00889498-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 9 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature2
09/01/2026B00894408-I1 · 180 CHAUNCEY STREETOpen ↗
08/25/2026B00894432-P1 · 180 CHAUNCEY STREETOpen ↗
▸Safety & Tenant Protection3
▸DOB NOWNYCSCA - Approved Site Safety Plans3
08/13/2026B00894408-I1 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B00889498-P1 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B00889498-I1 · 180 CHAUNCEY STREETOpen ↗
▸Environmental & Asbestos2
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
08/13/2026B00894432-P1 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B00894432-I1 · 180 CHAUNCEY STREETOpen ↗
▸Approvals, Objections & Sign-offs20
▸DOB NOWFee Exempt Supporting Document - DOF ACRIS report or BIB letter9
08/26/2026B01436699-I1 · 180 CHAUNCEY STREETOpen ↗
08/15/2026B01420157-I1 · 180 CHAUNCEY STREETOpen ↗
08/15/2026B01420167-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 9 on file for this type
▸DOB NOWDesign Commission Approval City Owned (Exterior Work)9
08/26/2026B01436699-I1 · 180 CHAUNCEY STREETOpen ↗
08/15/2026B01420157-I1 · 180 CHAUNCEY STREETOpen ↗
08/15/2026B01420167-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 9 on file for this type
▸DOB NOWDesign Commission Sign Off City Owned (Exterior Work)2
08/15/2026B00889498-I1 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B00894432-I1 · 180 CHAUNCEY STREETOpen ↗
▸Other Documents13
▸DOB NOWNYCSCA - BCC Plan Examination Transmittal10
09/13/2026B01436699-I1 · 180 CHAUNCEY STREETOpen ↗
08/26/2026B01436699-I1 · 180 CHAUNCEY STREETOpen ↗
08/15/2026B01420157-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 10 on file for this type
▸DOB NOWNYCSCA Exhibit 22
08/15/2026B00889498-I1 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B00894432-I1 · 180 CHAUNCEY STREETOpen ↗
▸DOB NOWAdjoining Owners Notification1
08/13/2026B00894432-I1 · 180 CHAUNCEY STREETOpen ↗