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Special Inspection Agency
XENGINEERING D.P.C.
Special Inspection Agency
10 projects with open permitsMANHATTAN · 11QUEENS · 1
8 buildings
15
Total Filings
12
Projects on File
8
Buildings Worked
10
Projects w/ Open Permits
Special Inspection Agency
Primary Trade
Activity
Projects by first filing month12 projects all-time
0235Mar '21 · 2Apr '21 · 1Jun '21 · 4Jul '21 · 1Aug '21 · 1Oct '21 · 2Nov '21 · 1Mar '21Apr '21May '21Jun '21Jul '21Aug '21Sep '21Oct '21Nov '21
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit1083%
Signed off217%
By project type
Alteration12
Most active buildings
All buildings →
29 WEST 65 STREETMANHATTAN · 1 open · latest 07/06/2021
2 projects
681 AMSTERDAM AVENUEMANHATTAN · 2 open · latest 01/22/2025
2 projects
310 WEST 85 STREETMANHATTAN · 2 open · latest 12/20/2021
2 projects
203 WEST 90 STREETMANHATTAN · 2 open · latest 10/07/2025
2 projects
622 HUDSON STREETMANHATTAN · 1 open · latest 08/02/2021
1 projects
420 CENTRAL PARK WESTMANHATTAN · 1 open · latest 08/30/2021
1 projects
Key relationships
Everyone →
Design firms
12 projects
Filing representatives
8 projects
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M00487083 ↗203 WEST 90 STREET
MANHATTAN
AlterationPermit Issued03/18/202110/07/2025
Design XENGINEERING
Owner 203 WEST 90TH STREET RETAIL, LLC
Contractor TROTH CONTRACTING INC
Filer QUICK FILING OF NY INC
interior renovations to 003 floor Apt#3H, 004 floor Apt#4h and 006 Apt#6H - All finishes as per plans. Plumbing to be filed under separate a…
M00526205 ↗681 AMSTERDAM AVENUE
MANHATTAN
AlterationPermit Issued06/17/202101/22/2025
Design XENGINEERING
Owner TUDOR REALTY SERVICES CORP
Contractor TROTH CONTRACTING INC
Filer QUICK FILING OF NY INC
Interior renovations of Apartments 6A,6H,2B to resolve ECB Viol#39040897N and refile the work that was originally submitted under DOB BIS#10…
M00526329 ↗681 AMSTERDAM AVENUE
MANHATTAN
AlterationPermit Issued06/17/202112/28/2022
Design XENGINEERING
Owner TUDOR REALTY SERVICES CORP
Contractor ORBIT PLBG & HTG INC
Filer QUICK FILING OF NY INC
Plumbing work in 6 fl /apt's#6A & 6H- legalization of exist. 8 pl. fixtures. Plumbing work in 2 fl/apt#2b - legalization of 2 exist. pl. fix…
M00595362 ↗310 WEST 85 STREET
MANHATTAN
AlterationPermit Issued10/05/202112/20/2021
Design XENGINEERING
Owner MIDBORO MANAGEMENT
Contractor ORBIT PLBG & HTG INC
Filer QUICK FILING OF NY INC
plumbing work on 4th floor apartment 4d- all finishes as per plans. ot to be filed under separate application # M00592779-I1.
M00579067 ↗375 RIVERSIDE DRIVE
MANHATTAN
AlterationPermit Issued11/23/202112/02/2021
Design XENGINEERING
Owner THUNDERBIRD REALTY CO, LLC
Contractor TROTH CONTRACTING INC
Filer QUICK FILING OF NY INC
Interior renovations on 2 fl apt#2a - new work as per plans submitted. Pl to be filed separately. Prior work approved under #102161811.
M00592779 ↗310 WEST 85 STREET
MANHATTAN
AlterationPermit Issued10/05/202111/21/2021
Design XENGINEERING
Owner MIDBORO MANAGEMENT
Contractor TROTH CONTRACTING INC
Filer QUICK FILING OF NY INC
interior renovations on 4th floor apartment 4d- all finishes as per plans. plumbing to be filed under separate application # M00595362-I1.
Counts cover all 12 projects (12 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
XENGINEERING1212/02/2021
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
TROTH CONTRACTING INC612/02/2021
ORBIT PLBG & HTG INC410/05/2021
AG CONSTRUCTION GROUP INC306/02/2021
STARCOM CONSTRUCTION CO103/18/2021
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
MIDBORO MANAGEMENT210/05/2021
TUDOR REALTY SERVICES CORP209/23/2021
203 WEST 90TH STREET RETAIL, LLC103/18/2021
THUNDERBIRD REALTY CO, LLC112/02/2021
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
QUICK FILING OF NY INC812/02/2021
12 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 12Open permit 10Signed off 2
12 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M00487083 ↗203 WEST 90 STREET
MANHATTAN
AlterationPermit Issued03/18/202110/07/2025
Design XENGINEERING
Owner 203 WEST 90TH STREET RETAIL, LLC
Contractor TROTH CONTRACTING INC
Filer QUICK FILING OF NY INC
interior renovations to 003 floor Apt#3H, 004 floor Apt#4h and 006 Apt#6H - All finishes as per plans. Plumbing to be filed under separate a…
M00526205 ↗681 AMSTERDAM AVENUE
MANHATTAN
AlterationPermit Issued06/17/202101/22/2025
Design XENGINEERING
Owner TUDOR REALTY SERVICES CORP
Contractor TROTH CONTRACTING INC
Filer QUICK FILING OF NY INC
Interior renovations of Apartments 6A,6H,2B to resolve ECB Viol#39040897N and refile the work that was originally submitted under DOB BIS#10…
M00526329 ↗681 AMSTERDAM AVENUE
MANHATTAN
AlterationPermit Issued06/17/202112/28/2022
Design XENGINEERING
Owner TUDOR REALTY SERVICES CORP
Contractor ORBIT PLBG & HTG INC
Filer QUICK FILING OF NY INC
Plumbing work in 6 fl /apt's#6A & 6H- legalization of exist. 8 pl. fixtures. Plumbing work in 2 fl/apt#2b - legalization of 2 exist. pl. fix…
M00595362 ↗310 WEST 85 STREET
MANHATTAN
AlterationPermit Issued10/05/202112/20/2021
Design XENGINEERING
Owner MIDBORO MANAGEMENT
Contractor ORBIT PLBG & HTG INC
Filer QUICK FILING OF NY INC
plumbing work on 4th floor apartment 4d- all finishes as per plans. ot to be filed under separate application # M00592779-I1.
M00579067 ↗375 RIVERSIDE DRIVE
MANHATTAN
AlterationPermit Issued11/23/202112/02/2021
Design XENGINEERING
Owner THUNDERBIRD REALTY CO, LLC
Contractor TROTH CONTRACTING INC
Filer QUICK FILING OF NY INC
Interior renovations on 2 fl apt#2a - new work as per plans submitted. Pl to be filed separately. Prior work approved under #102161811.
M00592779 ↗310 WEST 85 STREET
MANHATTAN
AlterationPermit Issued10/05/202111/21/2021
Design XENGINEERING
Owner MIDBORO MANAGEMENT
Contractor TROTH CONTRACTING INC
Filer QUICK FILING OF NY INC
interior renovations on 4th floor apartment 4d- all finishes as per plans. plumbing to be filed under separate application # M00595362-I1.
M00579103 ↗420 CENTRAL PARK WEST
MANHATTAN
AlterationPermit Issued08/19/202108/30/2021
Design XENGINEERING
Contractor TROTH CONTRACTING INC
interior renovations on 6 fl apt#6b-Scope is to create 1 laundry closet & two storage closets As well as replace kitchen cabinets and applia…
M00543268 ↗622 HUDSON STREET
MANHATTAN
AlterationPermit Issued07/26/202108/02/2021
Design XENGINEERING
Contractor TROTH CONTRACTING INC
Filer QUICK FILING OF NY INC
interior renovations of 4th floor apartment 4 c - all finishes as per plans. pl to be filed under separated application.
Q00491946 ↗109-10 180TH STREET
QUEENS
AlterationSigned-off03/24/202107/16/2021
Design XENGINEERING
Contractor AG CONSTRUCTION GROUP INC
replacement of 2 ac units on the roof-all other units filed under dob bis# 420663428
M00528072 ↗29 WEST 65 STREET
MANHATTAN
AlterationPermit Issued06/02/202107/06/2021
Design XENGINEERING
Contractor ORBIT PLBG & HTG INC
Filer QUICK FILING OF NY INC
Plumbing work on 6 fl /apt#6g-Replace kitchen pl. fixtures only-kitchen sink, dishwasher & stove replacement on existing roughing. OT work u…
M00526439 ↗29 WEST 65 STREET
MANHATTAN
AlterationSigned-off06/02/202106/18/2021
Design XENGINEERING
Contractor AG CONSTRUCTION GROUP INC
Interior renovations of Apt#6 G -electrical work to resolve ECB 35227293R- removal of exis. non-bearing partition between kitchen & living r…
M00497015 ↗203 WEST 90 STREET
MANHATTAN
AlterationPermit Issued04/05/202105/14/2021
Design XENGINEERING
Contractor ORBIT PLBG & HTG INC
interior renovations to 003 floor Apt#3H, 004 floor Apt#4h and 006 Apt#6H - All finishes as per plans- Plumbing. Ot filed under dob# M004870…
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
375 RIVERSIDE DRIVE ↗212/02/2021
310 WEST 85 STREET ↗210/05/2021
681 AMSTERDAM AVENUE ↗309/23/2021
622 HUDSON STREET ↗208/19/2021
420 CENTRAL PARK WEST ↗108/19/2021
29 WEST 65 STREET ↗206/02/2021
203 WEST 90 STREET ↗204/05/2021
109-10 180TH STREET ↗103/24/2021
▾Special Inspection Requirements — 29
DateRequirementBuildingInspectorRole
12/03/2021Fire-Resistant Penetrations and Joints375 RIVERSIDE DRIVETomasz Stachyraspecial
12/03/2021Energy Code Compliance Inspections375 RIVERSIDE DRIVETomasz Stachyraprogress
12/03/2021Final375 RIVERSIDE DRIVETomasz Stachyraprogress
12/03/2021Insulation placement and R values375 RIVERSIDE DRIVETomasz Stachyraenergy_progress
12/03/2021Lighting controls375 RIVERSIDE DRIVETomasz Stachyraenergy_progress
12/03/2021Interior lighting power375 RIVERSIDE DRIVETomasz Stachyraenergy_progress
12/02/2021Fire-Resistant Penetrations and Joints375 RIVERSIDE DRIVETomasz Stachyraspecial
12/02/2021Energy Code Compliance Inspections375 RIVERSIDE DRIVETomasz Stachyraprogress
12/02/2021Final375 RIVERSIDE DRIVETomasz Stachyraprogress
12/02/2021Interior lighting power375 RIVERSIDE DRIVETomasz Stachyraenergy_progress
12/02/2021Insulation placement and R values375 RIVERSIDE DRIVETomasz Stachyraenergy_progress
12/02/2021Lighting controls375 RIVERSIDE DRIVETomasz Stachyraenergy_progress
09/16/2021HVAC-R and service water heating equipment310 WEST 85 STREETTomasz Stachyraenergy_progress
09/16/2021Energy Code Compliance Inspections310 WEST 85 STREETTomasz Stachyraprogress
09/16/2021Fire-Resistant Penetrations and Joints310 WEST 85 STREETTomasz Stachyraspecial
09/16/2021Interior lighting power310 WEST 85 STREETTomasz Stachyraenergy_progress
09/16/2021Insulation placement and R values310 WEST 85 STREETTomasz Stachyraenergy_progress
09/16/2021Lighting controls310 WEST 85 STREETTomasz Stachyraenergy_progress
09/16/2021Energy Code Compliance Inspections310 WEST 85 STREETTomasz Stachyraprogress
09/16/2021Fire-Resistant Penetrations and Joints310 WEST 85 STREETTomasz Stachyraspecial
09/13/2021Final310 WEST 85 STREETTomasz Stachyraprogress
09/13/2021HVAC-R and service water heating equipment681 AMSTERDAM AVENUETomasz Stachyraenergy_progress
09/13/2021Energy Code Compliance Inspections681 AMSTERDAM AVENUETomasz Stachyraprogress
09/13/2021Fire-Resistant Penetrations and Joints681 AMSTERDAM AVENUETomasz Stachyraspecial
09/13/2021Fire-Resistant Penetrations and Joints681 AMSTERDAM AVENUETomasz Stachyraspecial
09/13/2021Energy Code Compliance Inspections681 AMSTERDAM AVENUETomasz Stachyraprogress
05/25/2021Fire-Resistant Penetrations and Joints29 WEST 65 STREETTomasz Stachyraspecial
05/25/2021Energy Code Compliance Inspections29 WEST 65 STREETTomasz Stachyraprogress
05/25/2021HVAC-R and service water piping design and insulation29 WEST 65 STREETTomasz Stachyraenergy_progress
▾Documents — 71 on file (BIS + DOB NOW)
▸Plans & Drawings15
▸DOB NOWPlans/Sketch15
09/04/2026M00487083-I1 · 203 WEST 90 STREETRequest digital key ↗
09/03/2026M00497015-I1 · 203 WEST 90 STREETRequest digital key ↗
09/03/2026M00526439-I1 · 29 WEST 65 STREETRequest digital key ↗
Showing 3 of 15 on file for this type
▸Applications & Permits6
▸DOB NOWLPC Approval/Permit6
08/13/2026M00592779-I1 · 310 WEST 85 STREETOpen ↗
08/13/2026M00543268-I1 · 622 HUDSON STREETOpen ↗
08/13/2026M00579067-I1 · 375 RIVERSIDE DRIVEOpen ↗
Showing 3 of 6 on file for this type
▸Seals & Professional Certifications33
▸DOB NOWDPL-1: Design Professional Seal & Signature15
09/04/2026M00487083-I1 · 203 WEST 90 STREETOpen ↗
09/03/2026M00497015-I1 · 203 WEST 90 STREETOpen ↗
09/03/2026M00526439-I1 · 29 WEST 65 STREETOpen ↗
Showing 3 of 15 on file for this type
▸DOB NOWProgress Inspector Seal & Signature12
09/02/2026M00595362-I1 · 310 WEST 85 STREETOpen ↗
09/02/2026M00595362-I1 · 310 WEST 85 STREETOpen ↗
09/01/2026M00579067-I1 · 375 RIVERSIDE DRIVEOpen ↗
Showing 3 of 12 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature6
09/02/2026M00595362-I1 · 310 WEST 85 STREETOpen ↗
09/01/2026M00579067-I1 · 375 RIVERSIDE DRIVEOpen ↗
09/01/2026M00579067-P1 · 375 RIVERSIDE DRIVEOpen ↗
Showing 3 of 6 on file for this type
▸Environmental & Asbestos15
▸DOB NOWDEP ACP-5: Asbestos Assessment Report15
09/04/2026M00487083-I1 · 203 WEST 90 STREETOpen ↗
09/03/2026M00497015-I1 · 203 WEST 90 STREETOpen ↗
09/03/2026M00526439-I1 · 29 WEST 65 STREETOpen ↗
Showing 3 of 15 on file for this type
▸Energy Compliance2
▸DOB NOWEN2: As Built Energy Analysis.2
08/13/2026Q00491946-I1 · 109-10 180TH STREETOpen ↗
08/13/2026M00526439-I1 · 29 WEST 65 STREETOpen ↗