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P.S. 21 Crispus Attucks
Tenant
2 projects with open permitsBROOKLYN · 5
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1 building
5
Total Filings
5
Projects on File
1
Buildings Worked
2
Projects w/ Open Permits
Tenant
Primary Trade
Activity
Projects by first filing month5 projects all-time
0112Oct '21 · 1Apr '22 · 1Sep '23 · 1Jul '24 · 1Jan '25 · 12022202320242025
bars = month · line = 3-mo average
Portfolio status
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Open permit240%
Signed off240%
Filed only120%
By project type
Alteration5
Most active buildings
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180 CHAUNCEY STREETBROOKLYN · 2 open · latest 10/13/2026
5 projects
Key relationships
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Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B00568919180 CHAUNCEY STREET
BROOKLYN
AlterationPermit Issued10/28/202110/13/2026
Design MASSA MULTIMEDIA ARCHITECTS
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Contractor AKM CONSTRUCTION SERVICE*
Filer PRECISION 3SIXTY NYC, INC
Site Civil Work - Remove and replace asphalt and landscaping as per plans.
B01035847180 CHAUNCEY STREET
BROOKLYN
AlterationPermit Issued07/18/202411/04/2025
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Contractor KEL-TECH CONSTRUCTION INC
Filer DSENY ENGINEERING SERVICES,PC
SH/PS21K - FOR TEMPORARY CONSTRUCTION EQUIPMENT(EMERGENCY SHED) SUBMITTING ON BEHALF OF CONTRACTOR, RELATED TO LLW# 138864 NO CHANGE IN USE,…
B00688281180 CHAUNCEY STREET
BROOKLYN
AlterationSigned-off04/11/202203/10/2025
Design NYMS CONSULTING, LLC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Contractor MARIC PLUMBING & HEATING
PS 021K, INSTALLATION OF TEMPORARY CHIMNEY, STEAM, CONDENSATE, AND MAKE-UP WATER PIPING TO CONNECT TEMPORARY MOBILE BOILER DURING RENOVATION…
B01158259180 CHAUNCEY STREET
BROOKLYN
AlterationFiled — no permit on record01/17/2025—
Design GREENMAN-PEDERSEN, INC.
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Filer SUPERSTRUCTURES ENG + ARCH
—
B00896840180 CHAUNCEY STREET
BROOKLYN
AlterationSigned-off09/14/202304/24/2024
Design DSENY ENGINEERING SERVICES, PC
Contractor AKM CONSTRUCTION SERVICE*
UPN/PS21K - FOR UNDERPINNING SUBMITTING ON BEHALF OF CONTRACTOR, RELATED TO JOB B00568919. NO CHANGE IN USE, OCCUPANCY OR EGRESS
Counts cover all 5 projects (5 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 Services207/18/2024
A&J Consulting Engineering Services104/02/2026
Greenman-Pedersen101/20/2025
Massa Multimedia Architects104/02/2026
NYMS Consulting101/12/2026
Superstructures Engineering + Architects101/20/2025
Ysrael A. Seinuk104/02/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Akm Construction Service*204/02/2026
ACS System Associates104/02/2026
Forsythe P&H104/02/2026
Kel-Tech Construction107/18/2024
Maric Plumbing & Heating101/12/2026
Maric Plumbing & Heating101/12/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
NYC School Construction Authority404/02/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Dseny Engineering Services107/18/2024
Precision 3Sixty NYC104/02/2026
Superstructures Engineering + Architects101/20/2025
5 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 5Open permit 2Signed off 2Filed only 1
5 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B00568919180 CHAUNCEY STREET
BROOKLYN
AlterationPermit Issued10/28/202110/13/2026
Design MASSA MULTIMEDIA ARCHITECTS
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Contractor AKM CONSTRUCTION SERVICE*
Filer PRECISION 3SIXTY NYC, INC
Site Civil Work - Remove and replace asphalt and landscaping as per plans.
B01035847180 CHAUNCEY STREET
BROOKLYN
AlterationPermit Issued07/18/202411/04/2025
Design DSENY ENGINEERING SERVICES, PC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Contractor KEL-TECH CONSTRUCTION INC
Filer DSENY ENGINEERING SERVICES,PC
SH/PS21K - FOR TEMPORARY CONSTRUCTION EQUIPMENT(EMERGENCY SHED) SUBMITTING ON BEHALF OF CONTRACTOR, RELATED TO LLW# 138864 NO CHANGE IN USE,…
B00688281180 CHAUNCEY STREET
BROOKLYN
AlterationSigned-off04/11/202203/10/2025
Design NYMS CONSULTING, LLC
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Contractor MARIC PLUMBING & HEATING
PS 021K, INSTALLATION OF TEMPORARY CHIMNEY, STEAM, CONDENSATE, AND MAKE-UP WATER PIPING TO CONNECT TEMPORARY MOBILE BOILER DURING RENOVATION…
B01158259180 CHAUNCEY STREET
BROOKLYN
AlterationFiled — no permit on record01/17/2025—
Design GREENMAN-PEDERSEN, INC.
Owner NYC SCHOOL CONSTRUCTION AUTHORITY
Filer SUPERSTRUCTURES ENG + ARCH
—
B00896840180 CHAUNCEY STREET
BROOKLYN
AlterationSigned-off09/14/202304/24/2024
Design DSENY ENGINEERING SERVICES, PC
Contractor AKM CONSTRUCTION SERVICE*
UPN/PS21K - FOR UNDERPINNING SUBMITTING ON BEHALF OF CONTRACTOR, RELATED TO JOB B00568919. NO CHANGE IN USE, OCCUPANCY OR EGRESS
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
180 CHAUNCEY STREET ↗504/02/2026
▾Documents — 237 on file (BIS + DOB NOW)
▸Plans & Drawings26
▸DOB NOWPlans/Sketch26
08/29/2026B00688281-S2 · 180 CHAUNCEY STREETRequest digital key ↗
08/29/2026B00688281-I1 · 180 CHAUNCEY STREETRequest digital key ↗
08/26/2026B00896840-I1 · 180 CHAUNCEY STREETRequest digital key ↗
Showing 3 of 26 on file for this type
▸Seals & Professional Certifications94
▸DOB NOWProgress Inspector Seal & Signature42
10/03/2026B00896840-I1 · 180 CHAUNCEY STREETOpen ↗
10/03/2026B00896840-I1 · 180 CHAUNCEY STREETOpen ↗
10/01/2026B00568919-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 42 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature28
10/03/2026B00896840-I1 · 180 CHAUNCEY STREETOpen ↗
10/03/2026B00896840-I1 · 180 CHAUNCEY STREETOpen ↗
10/03/2026B00896840-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 28 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature24
08/29/2026B00688281-P2 · 180 CHAUNCEY STREETOpen ↗
08/29/2026B00688281-I1 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B00896840-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 24 on file for this type
▸Safety & Tenant Protection2
▸DOB NOWNYCSCA - Approved Site Safety Plans2
08/29/2026B00688281-I1 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B01035847-I1 · 180 CHAUNCEY STREETOpen ↗
▸Environmental & Asbestos10
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form8
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 8 on file for this type
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
08/29/2026B00688281-P2 · 180 CHAUNCEY STREETOpen ↗
Showing 1 of 2 on file for this type
▸Energy Compliance1
▸DOB NOWEN2: As Built Energy Analysis1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Inspections & Test Reports4
▸DOB NOWSOIL REPORT3
09/01/2026B00568919-P5 · 180 CHAUNCEY STREETOpen ↗
Showing 1 of 3 on file for this type
▸DOB NOWTR4 Test Report and Plot Diagram1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Approvals, Objections & Sign-offs72
▸DOB NOWFee Exempt Supporting Document - DOF ACRIS report or BIB letter24
08/29/2026B00688281-I1 · 180 CHAUNCEY STREETOpen ↗
08/29/2026B00688281-P2 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B01035847-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 24 on file for this type
▸DOB NOWDesign Commission Approval City Owned (Exterior Work)24
08/29/2026B00688281-I1 · 180 CHAUNCEY STREETOpen ↗
08/29/2026B00688281-P2 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B00896840-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 24 on file for this type
▸DOB NOWDesign Commission Sign Off City Owned (Exterior Work)16
08/29/2026B00688281-I1 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B01158259-S3 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B00896840-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 16 on file for this type
▸DOB NOWDEP Variance (V5) letter8
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 8 on file for this type
▸Other Documents28
▸DOB NOWNYCSCA - BCC Plan Examination Transmittal24
08/29/2026B00688281-P2 · 180 CHAUNCEY STREETOpen ↗
08/29/2026B00688281-I1 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B00896840-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 24 on file for this type
▸DOB NOWNYCSCA Exhibit 24
08/29/2026B00688281-S2 · 180 CHAUNCEY STREETOpen ↗
08/29/2026B00688281-I1 · 180 CHAUNCEY STREETOpen ↗
08/13/2026B00896840-I1 · 180 CHAUNCEY STREETOpen ↗
Showing 3 of 4 on file for this type