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Special Inspection Agency
MGA ARCHITECTURE
Special Inspection Agency
2 projects with open permitsMANHATTAN · 9BROOKLYN · 2
8 buildings
17
Total Filings
11
Projects on File
8
Buildings Worked
2
Projects w/ Open Permits
Special Inspection Agency
Primary Trade
Activity
Projects by first filing month11 projects all-time
0123Jul '21 · 1Oct '22 · 1Dec '22 · 2May '23 · 1Aug '23 · 1Nov '23 · 1Aug '24 · 1Sep '24 · 1Jun '26 · 220222023202420252026
bars = month · line = 3-mo average
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Open permit218%
Signed off982%
By project type
Alteration10
Alteration CO1
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636 BROADWAYMANHATTAN · 1 open · latest 07/10/2026
3 projects
784 PARK AVENUEMANHATTAN · latest 07/24/2023
2 projects
632 BROADWAYMANHATTAN · latest 07/10/2026
1 projects
55 CENTRAL PARK WESTMANHATTAN · 1 open · latest 08/26/2026
1 projects
826 MADISON AVENUEMANHATTAN · latest 11/02/2022
1 projects
64 EAST 86 STREETMANHATTAN · latest 04/02/2025
1 projects
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8 projects
1 projects
Most recent projects
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ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01064900 ↗55 CENTRAL PARK WEST
MANHATTAN
AlterationPermit Issued09/09/202408/26/2026
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Contractor WATTERS CONSTRUCTION INC
Herewith Filing for the legalization of Apartment Combination, Work is limited to the removal of a demising wall and kitchen reconfiguration…
M01422529 ↗636 BROADWAY
MANHATTAN
AlterationSigned-off06/26/202607/10/2026
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Owner 636 BROADWAY ASSOCIATES
Contractor SKYE RISE CONSTRUCTION
Filer OUTSOURCE CONSULTANTS, INC.
SUBSQUENT STRUCTURAL FILING FOR NEW CONVENIENCE OPENING, REMOVING MASONRY AND INSTALL STEEL SUPPORT FOR NEW PASS THROUGH TO 632 BROADWAY AS …
M01422641 ↗632 BROADWAY
MANHATTAN
AlterationSigned-off06/26/202607/10/2026
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Owner RENAISSANCE PROPERTIES CORP.
Contractor SKYE RISE CONSTRUCTION
Filer OUTSOURCE CONSULTANTS, INC.
SUBSQUENT STRUCTURAL FILING FOR NEW CONVENIENCE OPENING, REMOVING MASONRY AND INSTALL STEEL SUPPORT FOR NEW PASS THROUGH TO 636 BROADWAY AS …
M01094818 ↗64 EAST 86 STREET
MANHATTAN
AlterationSigned-off08/22/202404/02/2025
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Contractor WATTERS CONSTRUCTION INC
Filer OUTSOURCE CONSULTANTS, INC.
SUBSQUENT FILING FOR MECHANICAL WORK IN APARTMENT 10AB CONSISTING OF INSTALLING TWO NEW AC UNITS AND ASSOCIATE MECHANICAL WORK AS SHOWN HERE…
M00901225 ↗636 BROADWAY
MANHATTAN
AlterationSigned-off08/15/202302/06/2025
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Owner 636 BROADWAY ASSOCIATES
Contractor SERVICE TECH MECH&PLBG IN
Filer OUTSOURCE CONSULTANTS, INC.
PLUMBING MODIFICATIONS -NEW ADA BATHROOM TO BE ADDED AND ASSOCIATED PIPING AS PER PLANS FILED (168 Crosby Street AKA 636 Broadway). NO CHAN…
M00942536 ↗636 BROADWAY
MANHATTAN
Alteration COPermit Issued11/10/202301/05/2024
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Owner 636 BROADWAY ASSOCIATES
Contractor BMT PLUMBING HEATING LL
Filer WILLIAM VITACCO ASSOCIATES
Minor partition work and finishes at first floor and cellar. Change of use at the cellar and 1st floor.
Counts cover all 11 projects (11 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
MGA ARCHITECTURE, WALTER RADTKE, R.1007/01/2026
MCLAREN ENGINEERING GROUP207/01/2026
JACK GREEN ASSOCIATES111/18/2024
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
NTS CONTRACTORS, CORP308/22/2024
WATTERS CONSTRUCTION INC309/09/2024
SKYE RISE CONSTRUCTION207/01/2026
AUTHENTIC PLBG CORP108/22/2024
BMT PLUMBING & HEATING LL109/30/2024
R.J.C. MECHANICAL CORP108/22/2024
SERVICE TECH MECH&PLBG IN108/22/2024
SUPREME GEN.CONTR INC107/02/2021
WHITE LEAF MECHANICAL COR110/19/2022
ZONE PLUMBING & HEATING C111/18/2024
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
636 BROADWAY ASSOCIATES307/01/2026
BENCHMARK REAL ESTATE110/19/2022
RENAISSANCE PROPERTIES CORP.107/01/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
OUTSOURCE CONSULTANTS, INC.807/01/2026
WILLIAM VITACCO ASSOCIATES109/30/2024
11 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 11Open permit 2Signed off 9
Any typeAlteration 10Alteration CO 1
11 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01064900 ↗55 CENTRAL PARK WEST
MANHATTAN
AlterationPermit Issued09/09/202408/26/2026
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Contractor WATTERS CONSTRUCTION INC
Herewith Filing for the legalization of Apartment Combination, Work is limited to the removal of a demising wall and kitchen reconfiguration…
M01422529 ↗636 BROADWAY
MANHATTAN
AlterationSigned-off06/26/202607/10/2026
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Owner 636 BROADWAY ASSOCIATES
Contractor SKYE RISE CONSTRUCTION
Filer OUTSOURCE CONSULTANTS, INC.
SUBSQUENT STRUCTURAL FILING FOR NEW CONVENIENCE OPENING, REMOVING MASONRY AND INSTALL STEEL SUPPORT FOR NEW PASS THROUGH TO 632 BROADWAY AS …
M01422641 ↗632 BROADWAY
MANHATTAN
AlterationSigned-off06/26/202607/10/2026
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Owner RENAISSANCE PROPERTIES CORP.
Contractor SKYE RISE CONSTRUCTION
Filer OUTSOURCE CONSULTANTS, INC.
SUBSQUENT STRUCTURAL FILING FOR NEW CONVENIENCE OPENING, REMOVING MASONRY AND INSTALL STEEL SUPPORT FOR NEW PASS THROUGH TO 636 BROADWAY AS …
M01094818 ↗64 EAST 86 STREET
MANHATTAN
AlterationSigned-off08/22/202404/02/2025
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Contractor WATTERS CONSTRUCTION INC
Filer OUTSOURCE CONSULTANTS, INC.
SUBSQUENT FILING FOR MECHANICAL WORK IN APARTMENT 10AB CONSISTING OF INSTALLING TWO NEW AC UNITS AND ASSOCIATE MECHANICAL WORK AS SHOWN HERE…
M00901225 ↗636 BROADWAY
MANHATTAN
AlterationSigned-off08/15/202302/06/2025
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Owner 636 BROADWAY ASSOCIATES
Contractor SERVICE TECH MECH&PLBG IN
Filer OUTSOURCE CONSULTANTS, INC.
PLUMBING MODIFICATIONS -NEW ADA BATHROOM TO BE ADDED AND ASSOCIATED PIPING AS PER PLANS FILED (168 Crosby Street AKA 636 Broadway). NO CHAN…
M00942536 ↗636 BROADWAY
MANHATTAN
Alteration COPermit Issued11/10/202301/05/2024
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Owner 636 BROADWAY ASSOCIATES
Contractor BMT PLUMBING HEATING LL
Filer WILLIAM VITACCO ASSOCIATES
Minor partition work and finishes at first floor and cellar. Change of use at the cellar and 1st floor.
B08037249 ↗86 BERGEN STREET
BROOKLYN
AlterationSigned-off05/17/202311/16/2023
Design JACK GREEN ASSOCIATES
Contractor ZONE PLUMBING & HEATING C
Filer OUTSOURCE CONSULTANTS, INC.
Herewith Filing Plumbing Work in conjunction with Alt-1 Application B00632236. No Change of Use, Egress or Occupancy is proposed under this …
M08048179 ↗784 PARK AVENUE
MANHATTAN
AlterationSigned-off12/02/202207/24/2023
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Contractor NTS CONTRACTORS, CORP
Filer OUTSOURCE CONSULTANTS, INC.
Herewith Filing Renovations in apartment 18A and accessory terrace as per shown on plans filed. No change in use, egress, occupancy proposed…
M08048196 ↗784 PARK AVENUE
MANHATTAN
AlterationSigned-off12/02/202212/16/2022
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Contractor NTS CONTRACTORS, CORP
Filer OUTSOURCE CONSULTANTS, INC.
Herewith Filing modifications to existing Mechanical system in conjunction with interior renovations of Apartment 18A. No change in use, eg…
M08016649 ↗826 MADISON AVENUE
MANHATTAN
AlterationSigned-off10/19/202211/02/2022
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Owner BENCHMARK REAL ESTATE
Contractor WHITE LEAF MECHANICAL COR
Filer OUTSOURCE CONSULTANTS, INC.
Mechanical system work as per plans filed herewith. No change in use, Egress or Occupancy.
B00528003 ↗159 DRIGGS AVENUE
BROOKLYN
AlterationSigned-off07/02/202108/11/2022
Design MGA ARCHITECTURE, WALTER RADTKE, R.
Contractor SUPREME GEN.CONTR INC
Minor Interior Partition Work, Minor Demolition Work, New Window Openings at Facade as per drawings filed herewith. No change in use egress …
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
636 BROADWAY ↗606/26/2026
632 BROADWAY ↗106/26/2026
86 BERGEN STREET ↗411/18/2024
55 CENTRAL PARK WEST ↗109/09/2024
64 EAST 86 STREET ↗108/22/2024
784 PARK AVENUE ↗212/02/2022
826 MADISON AVENUE ↗110/19/2022
159 DRIGGS AVENUE ↗107/02/2021
▾Special Inspection Requirements — 21
DateRequirementBuildingInspectorRole
06/26/2026Final632 BROADWAYWalter Radtkeprogress
06/26/2026Fire-Resistance Rated Construction632 BROADWAYWalter Radtkeprogress
06/26/2026Fire-Resistant Penetrations and Joints632 BROADWAYWalter Radtkespecial
06/25/2026Fire-Resistance Rated Construction636 BROADWAYWalter Radtkeprogress
06/25/2026Final636 BROADWAYWalter Radtkeprogress
06/25/2026Fire-Resistant Penetrations and Joints636 BROADWAYWalter Radtkespecial
11/19/2024Fire-Resistant Penetrations and Joints86 BERGEN STREETWalter Radtkespecial
10/16/2024Fire-Resistant Penetrations and Joints636 BROADWAYWalter Radtkespecial
10/11/2024Fire-Resistant Penetrations and Joints86 BERGEN STREETWalter Radtkespecial
09/27/2024Fire-Resistance Rated Construction55 CENTRAL PARK WESTWalter Radtkeprogress
08/22/2024Fire-Resistance Rated Construction636 BROADWAYWalter Radtkeprogress
08/22/2024Final636 BROADWAYWalter Radtkeprogress
08/22/2024Fire-Resistant Penetrations and Joints636 BROADWAYWalter Radtkespecial
08/16/2024Final55 CENTRAL PARK WESTWalter Radtkeprogress
08/15/2024Fire-Resistance Rated Construction636 BROADWAYWalter Radtkeprogress
08/15/2024Fire-Resistant Penetrations and Joints636 BROADWAYWalter Radtkespecial
08/15/2024Final636 BROADWAYWalter Radtkeprogress
06/11/2024Fire-Resistant Penetrations and Joints55 CENTRAL PARK WESTWalter Radtkespecial
12/19/2022Fire-Resistant Penetrations and Joints784 PARK AVENUEWalter Radtkespecial
12/19/2022Fire-Resistance Rated Construction784 PARK AVENUEWalter Radtkeprogress
12/19/2022Final784 PARK AVENUEWalter Radtkeprogress
▾Documents — 131 on file (BIS + DOB NOW)
▸Plans & Drawings24
▸DOB NOWPlans/Sketch24
09/01/2026M08016649-I1 · 826 MADISON AVENUERequest digital key ↗
09/01/2026M08048179-I1 · 784 PARK AVENUERequest digital key ↗
09/01/2026M08048179-P1 · 784 PARK AVENUERequest digital key ↗
Showing 3 of 24 on file for this type
▸Applications & Permits15
▸DOB NOWLPC Approval/Permit15
08/26/2026M00942536-I1 · 636 BROADWAYOpen ↗
08/16/2026M01422641-S1 · 632 BROADWAYOpen ↗
08/16/2026M01422641-I1 · 632 BROADWAYOpen ↗
Showing 3 of 15 on file for this type
▸Seals & Professional Certifications54
▸DOB NOWDPL-1: Design Professional Seal & Signature24
09/01/2026M08048179-P1 · 784 PARK AVENUEOpen ↗
09/01/2026M08048179-I1 · 784 PARK AVENUEOpen ↗
09/01/2026M08048196-I1 · 784 PARK AVENUEOpen ↗
Showing 3 of 24 on file for this type
▸DOB NOWProgress Inspector Seal & Signature17
09/01/2026M08048179-I1 · 784 PARK AVENUEOpen ↗
09/01/2026M08048179-I1 · 784 PARK AVENUEOpen ↗
09/01/2026M00901225-P2 · 636 BROADWAYOpen ↗
Showing 3 of 17 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature13
09/01/2026M08048179-I1 · 784 PARK AVENUEOpen ↗
09/01/2026M00901225-P2 · 636 BROADWAYOpen ↗
09/01/2026B08037249-I1 · 86 BERGEN STREETOpen ↗
Showing 3 of 13 on file for this type
▸Safety & Tenant Protection3
▸DOB NOWStreet Tree Checklist2
08/26/2026M00942536-I1 · 636 BROADWAYOpen ↗
08/13/2026M00942536-P1 · 636 BROADWAYOpen ↗
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Environmental & Asbestos22
▸DOB NOWDEP ACP-5: Asbestos Assessment Report22
09/01/2026M08048179-P1 · 784 PARK AVENUEOpen ↗
09/01/2026M08048179-I1 · 784 PARK AVENUEOpen ↗
09/01/2026M08048196-I1 · 784 PARK AVENUEOpen ↗
Showing 3 of 22 on file for this type
▸Energy Compliance1
▸DOB NOWEN2: As Built Energy Analysis.1
08/13/2026B00528003-I1 · 159 DRIGGS AVENUEOpen ↗
▸Other Documents12
▸DOB NOWProof of Historic Building10
08/26/2026M00942536-I1 · 636 BROADWAYOpen ↗
08/13/2026M08048179-I1 · 784 PARK AVENUEOpen ↗
08/13/2026M08048196-I1 · 784 PARK AVENUEOpen ↗
Showing 3 of 10 on file for this type
▸DOB NOWProperty Ownership Certification2
08/26/2026M00942536-I1 · 636 BROADWAYOpen ↗
08/13/2026M00942536-P1 · 636 BROADWAYOpen ↗