← Back
Design Firm
JAC ENGINEERING DPC
Design
2 jobs with open permitsMANHATTAN · 12STATEN ISLAND · 10BROOKLYN · 1
Claim this page
24 buildings
28
Total Filings
25
Jobs on File
24
Buildings Worked
2
Jobs w/ Open Permits
Design
Role
Activity
Jobs by first filing month25 jobs all-time
0257Jan '21 · 1Sep '21 · 1Oct '21 · 2Nov '21 · 1Jan '22 · 1Mar '22 · 1Apr '22 · 2Aug '22 · 1Sep '22 · 2Nov '22 · 6Dec '22 · 1Jan '23 · 1Jan '24 · 1May '24 · 1Nov '24 · 1Feb '26 · 1Apr '26 · 1202120222023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse jobs →
Open permit28%
Signed off1456%
Filed only936%
By job type
Alteration25
Most active buildings
All buildings →
535 MADISON AVENUEMANHATTAN · 1 open · latest 03/20/2026
2 jobs
2 PARK AVENUEMANHATTAN · latest 05/29/2026
1 jobs
127 EAST 23 STREETMANHATTAN · latest 04/06/2023
1 jobs
1440 BROADWAYMANHATTAN · latest 01/29/2024
1 jobs
776 3 AVENUEMANHATTAN · latest 09/01/2022
1 jobs
220 EAST 42 STREETMANHATTAN · latest 10/26/2021
1 jobs
Key relationships
Everyone →
People
All people →
JEFFREY CASTNERlatest 02/19/2026
17 filings
Most recent jobs
All jobs →
JobAddressTypeStatusFiledLatest permitDescription
M01387797 ↗2 PARK AVENUE
MANHATTAN
AlterationSigned-off04/22/202605/29/2026Conversion of Preaction Sprinkler to Wet Sprinkler System. No change in use, egress, or occupancy.
M01362313 ↗535 MADISON AVENUE
MANHATTAN
AlterationPermit Issued02/25/202603/20/2026Removal of existing preaction sprinkler system including preaction pac, piping and sprinkler heads. Installation of new preaction sprinkler…
M01008336 ↗218 WEST 18 STREET
MANHATTAN
AlterationSigned-off05/03/202406/02/2025Conversion of Preaction Sprinkler to Wet Sprinkler System. No change in use, egress, or occupancy.
M01134290 ↗535 MADISON AVENUE
MANHATTAN
AlterationSigned-off11/08/202412/17/2024Conversion of preaction sprinkler to wet sprinkler system. No change in use, egress, or occupancy.
M00972482 ↗1440 BROADWAY
MANHATTAN
AlterationSigned-off01/03/202401/29/2024Conversion of Preaction Sprinkler to Wet Sprinkler System. No change in use, egress, or occupancy.
M00529791 ↗152 WEST 57 STREET
MANHATTAN
AlterationSigned-off09/22/202109/29/2023CONVERSION OF EXISTING PRE-ACTION SPRINKLER SYSTEM TO WET-PIPE SPRINKLER SYSTEM
Counts cover all 25 jobs (25 DOB NOW). Dated by first filing; BIS jobs by first permit issuance.
25 DOB NOW jobs, anchored the same way as Buildings Worked. Status is the job's permit state today: open = at least one permit currently issued. BIS jobs show their raw permit status and are not counted as open.
All 25Open permit 2Signed off 14Filed only 9
25 jobs
JobAddressTypeStatusFiledLatest permitDescription
M01387797 ↗2 PARK AVENUE
MANHATTAN
AlterationSigned-off04/22/202605/29/2026Conversion of Preaction Sprinkler to Wet Sprinkler System. No change in use, egress, or occupancy.
M01362313 ↗535 MADISON AVENUE
MANHATTAN
AlterationPermit Issued02/25/202603/20/2026Removal of existing preaction sprinkler system including preaction pac, piping and sprinkler heads. Installation of new preaction sprinkler…
M01008336 ↗218 WEST 18 STREET
MANHATTAN
AlterationSigned-off05/03/202406/02/2025Conversion of Preaction Sprinkler to Wet Sprinkler System. No change in use, egress, or occupancy.
M01134290 ↗535 MADISON AVENUE
MANHATTAN
AlterationSigned-off11/08/202412/17/2024Conversion of preaction sprinkler to wet sprinkler system. No change in use, egress, or occupancy.
M00972482 ↗1440 BROADWAY
MANHATTAN
AlterationSigned-off01/03/202401/29/2024Conversion of Preaction Sprinkler to Wet Sprinkler System. No change in use, egress, or occupancy.
M00529791 ↗152 WEST 57 STREET
MANHATTAN
AlterationSigned-off09/22/202109/29/2023CONVERSION OF EXISTING PRE-ACTION SPRINKLER SYSTEM TO WET-PIPE SPRINKLER SYSTEM
B07996588 ↗1 HUDSON AVENUE
BROOKLYN
AlterationSigned-off09/02/202208/22/2023Removal of existing Deluge System for GT# 3-5 Transformer & Pump House. No change in use, egress, or occupancy.
S00608819 ↗NORTHFIELD AVENUE
STATEN ISLAND
AlterationSigned-off10/12/202108/16/2023Install new manual dry sprinkler system above battery energy storage system, filed in conjunction with ALT I #510115796.
S00623379 ↗HYLAN BOULEVARD
STATEN ISLAND
AlterationSigned-off11/17/202108/15/2023Install new manual dry sprinkler system above battery energy storage system, filed in conjunction with S00558291-I1.
S00722711 ↗1 EDGEWATER STREET
STATEN ISLAND
AlterationSigned-off04/21/202205/04/2023Conversion of Preaction Sprinkler to Wet Sprinkler System on the 6th & 7th Floors. No change in use, egress, or occupancy.
M08048829 ↗127 EAST 23 STREET
MANHATTAN
AlterationSigned-off12/09/202204/06/2023Remove existing deluge sprinkler system and convert to wet sprinkler system. No change in use, egress, or occupancy.
S00812645 ↗1555 ARTHUR KILL ROAD
STATEN ISLAND
AlterationFiled — no permit on record01/13/2023——
S08035058 ↗45 GIFFORDS LANE
STATEN ISLAND
AlterationFiled — no permit on record11/09/2022——
S08035109 ↗53 GIFFORDS LANE
STATEN ISLAND
AlterationFiled — no permit on record11/09/2022——
S08035125 ↗ARTHUR KILL ROAD
STATEN ISLAND
AlterationFiled — no permit on record11/09/2022——
S08035146 ↗ARTHUR KILL ROAD
STATEN ISLAND
AlterationFiled — no permit on record11/09/2022——
S08035171 ↗ARTHUR KILL ROAD
STATEN ISLAND
AlterationFiled — no permit on record11/09/2022——
S08035192 ↗287 NELSON AVENUE
STATEN ISLAND
AlterationFiled — no permit on record11/09/2022——
M00764279 ↗776 3 AVENUE
MANHATTAN
AlterationFiled — no permit on record09/01/2022——
Q00760843 ↗43-40 57 AVENUE
QUEENS
AlterationFiled — no permit on record08/02/2022——
X00612221 ↗GUNTHER AVENUE
BRONX
AlterationSigned-off01/26/202205/24/2022INSTALLATION OF WATER SPRAY SYSTEM FOR BATTERY ENERGY STORAGE CONTAINER
M00725883 ↗59 MAIDEN LANE
MANHATTAN
AlterationPermit Issued04/28/202205/13/2022Addition of three upright sprinkler heads onto existing preaction sprinkler system. No change in use, egress, or occupancy.
M00691260 ↗653 MADISON AVENUE
MANHATTAN
AlterationSigned-off03/28/202204/21/2022Conversion of existing pre-action sprinkler system to wet pipe sprinkler system.
M00579114 ↗220 EAST 42 STREET
MANHATTAN
AlterationSigned-off10/13/202110/26/2021Conversion of Preaction Sprinkler to Wet Sprinkler System. No change in use, egress, or occupancy.
M00448570 ↗909 3 AVENUE
MANHATTAN
AlterationSigned-off01/25/202106/27/2021Conversion of Preaction Sprinkler to Wet Sprinkler System. No change in use, egress, or occupancy.
Scope of Work
Sprinkler / Standpipe — 4 jobs · most recent 02/25/2026
No specific sub-scope on file — job count only.
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
JEFFREY CASTNER1702/19/2026
Who this entity's jobs were filed with. Top 25 per group by shared jobs.
NameJobs togetherMost recent
UNITED FIRE PROT CORP1304/22/2026
APPROVED FIRE PREV. CORP301/26/2022
Who this entity's jobs were filed with. Top 25 per group by shared jobs.
NameJobs togetherMost recent
GI ENDURANT LLC311/09/2022
MADISON TOWER LLC202/25/2026
COLLIERS103/28/2022
CON EDISON109/02/2022
CUSHMAN & WAKEFIELD105/03/2024
KNIGHTSTONE MANAGEMENT LLC104/21/2022
MACY'S INC.101/03/2024
RENCAP SECURITIES, INC109/01/2022
SL GREEN REALTY CORP110/13/2021
VORNADO REALTY TRUST107/23/2021
Who this entity's jobs were filed with. Top 25 per group by shared jobs.
NameJobs togetherMost recent
UNITED FIRE PROTECTION CORP.1002/25/2026
SPARC FIRE PROTECTION ENGINEERING611/09/2022
Click a row for this entity's own jobs, plans and documents at that building.
BuildingFilingsMost Recent
535 MADISON AVENUE ↗202/19/2026
218 WEST 18 STREET ↗102/20/2024
127 EAST 23 STREET ↗209/11/2023
45 GIFFORDS LANE ↗111/04/2022
53 GIFFORDS LANE ↗111/04/2022
ARTHUR KILL ROAD ↗111/04/2022
1 HUDSON AVENUE ↗108/31/2022
776 3 AVENUE ↗106/24/2022
653 MADISON AVENUE ↗103/03/2022
GUNTHER AVENUE ↗110/14/2021
220 EAST 42 STREET ↗108/18/2021
152 WEST 57 STREET ↗105/26/2021
909 3 AVENUE ↗301/06/2021
59 MAIDEN LANE ↗1—
1440 BROADWAY ↗1—
2 PARK AVENUE ↗1—
43-40 57 AVENUE ↗1—
NORTHFIELD AVENUE ↗1—
HYLAN BOULEVARD ↗1—
1 EDGEWATER STREET ↗1—
1555 ARTHUR KILL ROAD ↗1—
ARTHUR KILL ROAD ↗1—
ARTHUR KILL ROAD ↗1—
287 NELSON AVENUE ↗1—
▾Documents — 79 on file (BIS + DOB NOW)
▸Plans & Drawings27
▸DOB NOWPlans/Sketch25
09/03/2026M00529791-I1Request digital key ↗
09/02/2026M00691260-I1Request digital key ↗
09/02/2026M00725883-I1Request digital key ↗
Showing 3 of 25 on file for this type
▸DOB NOWPlans/Sketch - Sprinkler2
09/03/2026M00448570-I1Request digital key ↗
08/15/2026M00448570-P1Request digital key ↗
▸Seals & Professional Certifications39
▸DOB NOWDPL-1: Design Professional Seal & Signature27
09/03/2026M00448570-P1Open ↗
09/03/2026M00448570-I1Open ↗
09/02/2026M00725883-I1Open ↗
Showing 3 of 27 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature12
09/02/2026M00579114-I1Open ↗
08/30/2026M00764279-I1Open ↗
08/28/2026M01362313-I1Open ↗
Showing 3 of 12 on file for this type
▸Environmental & Asbestos11
▸DOB NOWDEP ACP-5: Asbestos Assessment Report11
09/03/2026M00448570-P1Open ↗
09/03/2026M00448570-I1Open ↗
09/02/2026M00725883-I1Open ↗
Showing 3 of 11 on file for this type
▸Approvals, Objections & Sign-offs2
▸DOB NOWDesign Commission Approval City Owned (Exterior Work)1
08/13/2026M00529791-I1Open ↗
▸DOB NOWDesign Commission Sign Off City Owned (Exterior Work)1
08/13/2026M00529791-I1Open ↗