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Design Firm
DAVID W. DAY, P.E.
Design
2 projects with open permitsMANHATTAN · 20BROOKLYN · 2
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12 buildings
43
Total Filings
22
Projects on File
12
Buildings Worked
2
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month22 projects all-time
0134Sep '20 · 2Jan '21 · 1Jun '21 · 2Feb '22 · 1Mar '22 · 3Nov '22 · 1Feb '23 · 1May '23 · 1Jul '23 · 1Apr '24 · 2Aug '24 · 1Sep '24 · 1Dec '24 · 1Jun '25 · 1Aug '25 · 1Oct '25 · 1Aug '26 · 1202120222023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit29%
Signed off1986%
Filed only15%
By project type
Alteration22
Most active buildings
All buildings →
464 RIVERSIDE DRIVEMANHATTAN · latest 07/21/2022
5 projects
430 WEST 116 STREETMANHATTAN · latest 08/20/2026
2 projects
607 WEST 113 STREETMANHATTAN · latest 06/12/2024
2 projects
435 RIVERSIDE DRIVEMANHATTAN · 1 open · latest 07/16/2025
2 projects
21 CLAREMONT AVENUEMANHATTAN · latest 05/20/2026
2 projects
445 RIVERSIDE DRIVEMANHATTAN · latest 03/04/2025
2 projects
Key relationships
Everyone →
Design firms
6 projects
Filing representatives
5 projects
People
All people →
DAVID DAYlatest 08/18/2026
33 filings
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01447385 ↗430 WEST 116 STREET
MANHATTAN
AlterationFiled — no permit on record08/20/2026—
Owner Trustees of Columbia University
Filer ONSITE PROJECT CONSULTING LLC
—
M01292461 ↗21 CLAREMONT AVENUE
MANHATTAN
AlterationSigned-off10/01/202505/20/2026
Owner Trustees of Columbia University
Contractor APOLON CONSTRUCTION CORP
INTERIOR RENOVATION TO APARTMENT UNIT 32, 43 NON STRUCTURAL DEMOLITION. INSTALLATION OF NEW PARTITIONS CEILING, LIGHTING AND FINISHES. NO CH…
M00932891 ↗182 LAFAYETTE STREET
MANHATTAN
AlterationPermit Issued08/22/202501/23/2026
Owner HA DESIGN STUDIO LLC
Contractor FORTE GC INC
SUBSEQUENT PLUMBING FILING FOR M00932891-I1
M01211710 ↗435 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off06/03/202507/16/2025
Owner Trustees of Columbia University
Contractor APOLON CONSTRUCTION
SUBSEQUENT PLUMBING FILING FOR JOB# M01211710
M08035673 ↗445 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off09/18/202403/04/2025
Owner Trustees of Columbia University
Contractor APOLON CONSTRUCTION
SUBSEQUENT PLUMBING FILING FOR DOB JOB# M08035673-I1
M01121354 ↗460 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off12/18/202402/20/2025
Owner Trustees of Columbia University
Contractor APOLON CONSTRUCTION
SUBSEQUENT PLUMBING FILING FOR JOB # M01121354-I1
Counts cover all 22 projects (22 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
DAVID DAY3308/18/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
DOMOARCHITECTURE608/20/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
APOLON CONSTRUCTION CORP605/04/2026
ALAFOGIANNIS PLBG & HTG508/05/2024
DEPENDABLE MECH CORP309/24/2025
MACCARONE PLUMBING INC210/14/2021
MS PLUMBING CORPORATION205/04/2026
AMERICAN STANDARD P&H COR110/30/2023
ENA PLUMBING CORP102/22/2023
ESSENTIAL DESIGN & BUILD103/21/2022
FORTE GC INC108/22/2025
JOHN FITZGERALD PLBG &HTG104/10/2024
JR CONSTRUCTION CORP105/02/2024
LAKEVIEW CONSTRUCTION INC106/10/2021
MAMAIS CONTRACTING CORP109/16/2020
MEGA PLBG CORP109/02/2022
ORBIT PLBG & HTG INC108/22/2025
S.O.S. PLBG & HTG LTD102/22/2023
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
COLUMBIA RESIDENTIAL905/02/2024
Trustees of Columbia University608/20/2026
COLUMBIA UNIVERSITY306/27/2022
HA DESIGN STUDIO LLC108/22/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
ONSITE PROJECT CONSULTING LLC508/20/2026
22 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 22Open permit 2Signed off 19Filed only 1
22 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01447385 ↗430 WEST 116 STREET
MANHATTAN
AlterationFiled — no permit on record08/20/2026—
Owner Trustees of Columbia University
Filer ONSITE PROJECT CONSULTING LLC
—
M01292461 ↗21 CLAREMONT AVENUE
MANHATTAN
AlterationSigned-off10/01/202505/20/2026
Owner Trustees of Columbia University
Contractor APOLON CONSTRUCTION CORP
INTERIOR RENOVATION TO APARTMENT UNIT 32, 43 NON STRUCTURAL DEMOLITION. INSTALLATION OF NEW PARTITIONS CEILING, LIGHTING AND FINISHES. NO CH…
M00932891 ↗182 LAFAYETTE STREET
MANHATTAN
AlterationPermit Issued08/22/202501/23/2026
Owner HA DESIGN STUDIO LLC
Contractor FORTE GC INC
SUBSEQUENT PLUMBING FILING FOR M00932891-I1
M01211710 ↗435 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off06/03/202507/16/2025
Owner Trustees of Columbia University
Contractor APOLON CONSTRUCTION
SUBSEQUENT PLUMBING FILING FOR JOB# M01211710
M08035673 ↗445 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off09/18/202403/04/2025
Owner Trustees of Columbia University
Contractor APOLON CONSTRUCTION
SUBSEQUENT PLUMBING FILING FOR DOB JOB# M08035673-I1
M01121354 ↗460 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off12/18/202402/20/2025
Owner Trustees of Columbia University
Contractor APOLON CONSTRUCTION
SUBSEQUENT PLUMBING FILING FOR JOB # M01121354-I1
M01090245 ↗435 RIVERSIDE DRIVE
MANHATTAN
AlterationPermit Issued08/05/202408/13/2024
Owner Trustees of Columbia University
Contractor ALAFOGIANNIS PLBG & HTG
SUBSEQUENT PLUMBING FILING FOR JOB# M01090217-I1
M01029538 ↗607 WEST 113 STREET
MANHATTAN
AlterationSigned-off04/10/202406/12/2024
Owner COLUMBIA RESIDENTIAL
Contractor APOLON CONSTRUCTION
Subsequent mechanical filing for Job # M01029229-I1
M00880436 ↗21 CLAREMONT AVENUE
MANHATTAN
AlterationSigned-off05/26/202306/10/2024
Owner COLUMBIA RESIDENTIAL
Contractor APOLON CONSTRUCTION
INTERIOR RENOVATION TO APARTMENT UNIT 102. NON STRUCTURAL DEMOLITION. INSTALLATION OF NEW PARTITIONS CEILING, LIGHTING AND FINISHES. NO CHAN…
M01031210 ↗607 WEST 113 STREET
MANHATTAN
AlterationSigned-off04/10/202405/29/2024
Owner COLUMBIA RESIDENTIAL
Contractor JOHN FITZGERALD PLBG &HTG
Subsequent plumbing filing for job# M01029229-I1
M00901912 ↗448 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off07/12/202303/22/2024
Owner COLUMBIA RESIDENTIAL
Contractor JR CONSTRUCTION CORP
INTERIOR RENOVATION TO APARTMENT UNIT 61 AND 62. NON STRUCTURAL DEMOLITION. INSTALLATION OF NEW PARTITIONS CEILING, LIGHTING AND FINISHES. N…
M00809648 ↗90 MORNINGSIDE DRIVE
MANHATTAN
AlterationSigned-off02/22/202304/21/2023
Owner COLUMBIA RESIDENTIAL
Contractor ENA PLUMBING CORP
Subsequent plumbing filing for job # M00809585-I1
M08035730 ↗445 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off11/22/202204/13/2023
Contractor ALAFOGIANNIS PLBG & HTG
HEREWITH FILING SUBSEQUENT PLUMBING FILING FOR JOB# M08035550-I1
M00677504 ↗464 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off03/21/202207/21/2022
Owner COLUMBIA RESIDENTIAL
Contractor ESSENTIAL DESIGN & BUILD
Filer ONSITE PROJECT CONSULTING LLC
HEREWITH FILING SUBSEQUENT MECHANICAL FILING TO DOB JOB # M00677460
M00677541 ↗464 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off03/21/202207/21/2022
Owner COLUMBIA RESIDENTIAL
Contractor AUTHENTIC PLBG CORP
Filer ONSITE PROJECT CONSULTING LLC
HEREWITH FILING SUBSEQUENT PLUMBING FILING FOR DOB JOB #M00677460
M00677567 ↗464 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off02/25/202204/26/2022
Owner COLUMBIA RESIDENTIAL
Contractor MEGA PLBG CORP
Filer ONSITE PROJECT CONSULTING LLC
HEREWITH FILING SUBSEQUENT PLUMBING FILING FOR DOB JOB #M00677556
M00677585 ↗430 WEST 116 STREET
MANHATTAN
AlterationSigned-off03/29/202204/19/2022
Owner COLUMBIA RESIDENTIAL
Contractor ALAFOGIANNIS PLBG & HTG
Filer ONSITE PROJECT CONSULTING LLC
HEREWITH FILING SUBSEQUENT PLUMBING FILING FOR DOB JOB#M00677579
M00440195 ↗452 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off01/15/202110/06/2021
Owner COLUMBIA UNIVERSITY
Contractor ALAFOGIANNIS PLBG & HTG
Filer ONSITE PROJECT CONSULTING LLC
SUBSEQUENT PLUMBING FILING FOR JOB # 140969959
B00528044 ↗494 GATEWAY DRIVE
BROOKLYN
AlterationSigned-off06/10/202109/02/2021
Contractor MACCARONE PLUMBING INC
Modifications to the existing plumbing system on the ground floor (T-Mobile Store) as per plans. No change to use, egress or occupancy.
B00528035 ↗494 GATEWAY DRIVE
BROOKLYN
AlterationSigned-off06/10/202108/18/2021
Contractor LAKEVIEW CONSTRUCTION
Modifications to the existing HVAC system on the 1st floor (T-Mobile Reno) as per plans. No change to use, egress or occupancy.
M00324815 ↗464 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off09/16/202008/10/2021
Owner COLUMBIA UNIVERSITY
Contractor MACCARONE PLUMBING INC
Filer ONSITE PROJECT CONSULTING LLC
Subsequent plumbing filing for 140887761
M00374861 ↗464 RIVERSIDE DRIVE
MANHATTAN
AlterationSigned-off09/16/202004/30/2021
Owner COLUMBIA UNIVERSITY
Contractor MAMAIS CONTRACTING CORP
Filer ONSITE PROJECT CONSULTING LLC
Subsequent mechanical filing for Job #140887761
Scope of Work
HVAC — 1 project · most recent 08/20/2026
Air Conditioning Systems Heating and Air Conditioning Systems
Plumbing — 2 projects · most recent 05/04/2026
Water/Sanitary Gas
Structural — 1 project · most recent 08/20/2026
No specific sub-scope on file — project count only.
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
430 WEST 116 STREET ↗308/18/2026
21 CLAREMONT AVENUE ↗505/04/2026
435 RIVERSIDE DRIVE ↗409/22/2025
460 RIVERSIDE DRIVE ↗306/23/2025
448 RIVERSIDE DRIVE ↗304/29/2024
607 WEST 113 STREET ↗204/05/2024
182 LAFAYETTE STREET ↗309/12/2023
464 RIVERSIDE DRIVE ↗1002/22/2023
90 MORNINGSIDE DRIVE ↗101/09/2023
452 RIVERSIDE DRIVE ↗306/14/2022
445 RIVERSIDE DRIVE ↗4—
494 GATEWAY DRIVE ↗2—
▾Documents — 258 on file (BIS + DOB NOW)
▸Plans & Drawings50
▸DOB NOWPlans/Sketch43
09/02/2026M00677567-I1 · 464 RIVERSIDE DRIVERequest digital key ↗
09/02/2026M00677567-P1 · 464 RIVERSIDE DRIVERequest digital key ↗
09/02/2026M00677541-I1 · 464 RIVERSIDE DRIVERequest digital key ↗
Showing 3 of 43 on file for this type
▸DOB NOWPlans/Sketch - Plumbing6
09/03/2026M00324815-I1 · 464 RIVERSIDE DRIVERequest digital key ↗
09/03/2026M00440195-P2 · 452 RIVERSIDE DRIVERequest digital key ↗
09/03/2026M00440195-I1 · 452 RIVERSIDE DRIVERequest digital key ↗
Showing 3 of 6 on file for this type
▸DOB NOWPlans/Sketch - Mechanical Systems1
09/04/2026M00374861-I1 · 464 RIVERSIDE DRIVERequest digital key ↗
▸Applications & Permits41
▸DOB NOWLPC Approval/Permit41
09/03/2026M00440195-P2 · 452 RIVERSIDE DRIVEOpen ↗
09/03/2026M00440195-I1 · 452 RIVERSIDE DRIVEOpen ↗
09/03/2026M00440195-P1 · 452 RIVERSIDE DRIVEOpen ↗
Showing 3 of 41 on file for this type
▸Seals & Professional Certifications105
▸DOB NOWDPL-1: Design Professional Seal & Signature51
09/24/2026M01447385-S1 · 430 WEST 116 STREETOpen ↗
09/03/2026M00440195-P2 · 452 RIVERSIDE DRIVEOpen ↗
09/03/2026M00440195-I1 · 452 RIVERSIDE DRIVEOpen ↗
Showing 3 of 51 on file for this type
▸DOB NOWProgress Inspector Seal & Signature32
09/01/2026M00932891-I1 · 182 LAFAYETTE STREETOpen ↗
09/01/2026M00932891-I1 · 182 LAFAYETTE STREETOpen ↗
08/29/2026M01121354-I1 · 460 RIVERSIDE DRIVEOpen ↗
Showing 3 of 32 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature22
09/01/2026M01031210-I1 · 607 WEST 113 STREETOpen ↗
09/01/2026M00932891-I1 · 182 LAFAYETTE STREETOpen ↗
09/01/2026M00932891-S1 · 182 LAFAYETTE STREETOpen ↗
Showing 3 of 22 on file for this type
▸Safety & Tenant Protection7
▸DOB NOWTenant Protection Plan7
09/03/2026M00440195-P2 · 452 RIVERSIDE DRIVEOpen ↗
09/03/2026M00440195-I1 · 452 RIVERSIDE DRIVEOpen ↗
09/03/2026M00440195-P1 · 452 RIVERSIDE DRIVEOpen ↗
Showing 3 of 7 on file for this type
▸Environmental & Asbestos50
▸DOB NOWDEP ACP-5: Asbestos Assessment Report45
09/24/2026M01447385-S1 · 430 WEST 116 STREETOpen ↗
09/03/2026M00440195-P1 · 452 RIVERSIDE DRIVEOpen ↗
09/03/2026M00440195-P2 · 452 RIVERSIDE DRIVEOpen ↗
Showing 3 of 45 on file for this type
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form5
09/01/2026M08035730-I1 · 445 RIVERSIDE DRIVEOpen ↗
08/23/2026M01121354-S2 · 460 RIVERSIDE DRIVEOpen ↗
08/23/2026M01121354-S1 · 460 RIVERSIDE DRIVEOpen ↗
Showing 3 of 5 on file for this type
▸Energy Compliance3
▸DOB NOWEN2: As Built Energy Analysis.3
08/13/2026B00528044-I1 · 494 GATEWAY DRIVEOpen ↗
08/13/2026B00528035-I1 · 494 GATEWAY DRIVEOpen ↗
08/13/2026M00677504-I1 · 464 RIVERSIDE DRIVEOpen ↗
▸Other Documents2
▸DOB NOWDHCR Document2
08/13/2026M00809648-I1 · 90 MORNINGSIDE DRIVEOpen ↗
08/13/2026M01090245-I1 · 435 RIVERSIDE DRIVEOpen ↗