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Design Firm
MGA ARCHITECTURE, WALTER RADTKE, R.
Design
9 projects with open permitsMANHATTAN · 31BROOKLYN · 6
20 buildings
72
Total Filings
37
Projects on File
20
Buildings Worked
9
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month35 projects all-time
0235Dec '19 · 1Jan '20 · 2Jul '21 · 4Aug '21 · 3Sep '21 · 1May '22 · 4Sep '22 · 1Oct '22 · 1Dec '22 · 3Aug '23 · 1Nov '23 · 2Dec '23 · 1Feb '24 · 1May '24 · 2Aug '24 · 1Sep '24 · 1Apr '25 · 1Jun '25 · 2Nov '25 · 1Jun '26 · 22020202120222023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit924%
Signed off2465%
Filed only411%
By project type
Alteration34
Alteration CO2
No Work1
Most active buildings
All buildings →
636 BROADWAYMANHATTAN · 1 open · latest 07/10/2026
5 projects
826 MADISON AVENUEMANHATTAN · latest 01/12/2023
4 projects
784 PARK AVENUEMANHATTAN · latest 07/24/2023
4 projects
333 WEST END AVENUEMANHATTAN · latest 04/22/2025
3 projects
86 BERGEN STREETBROOKLYN · 1 open · latest 08/30/2024
3 projects
894 BROADWAYMANHATTAN · latest 09/03/2021
2 projects
Walter Radtkelatest 06/25/2026
49 filings
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01064900 ↗55 CENTRAL PARK WEST
MANHATTAN
AlterationPermit Issued09/09/202408/26/2026Herewith 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-off06/26/202607/10/2026SUBSQUENT 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-off06/26/202607/10/2026SUBSQUENT STRUCTURAL FILING FOR NEW CONVENIENCE OPENING, REMOVING MASONRY AND INSTALL STEEL SUPPORT FOR NEW PASS THROUGH TO 636 BROADWAY AS …
B01319417 ↗57 MASPETH AVENUE
BROOKLYN
AlterationPermit Issued11/24/202507/07/2026Herewith Filing Structural Work in conjunction with interior renovations, proposed is a new stair opening/assembly and extension of existing…
M01234696 ↗12 WEST 72 STREET
MANHATTAN
AlterationPermit Issued06/10/202502/17/2026SUBSQUENT PLUMBING WORK FOR APT 12A AS SHOWN HEREWITH. NO CHANGES TO EGRESS, OCCUPANCY OR USE.
M01231938 ↗12 WEST 72 STREET
MANHATTAN
AlterationFiled — no permit on record06/03/2025——
Counts cover all 37 projects (37 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
Walter Radtke4906/25/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
MCLAREN ENGINEERING GROUP207/01/2026
DAVID KEANE P.E., P.C.101/09/2026
JACK GREEN ASSOCIATES104/17/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
WATTERS CONSTRUCTION INC906/30/2026
R.J.C. MECHANICAL CORP606/30/2026
LEECO CONSTRUCTION CORP412/13/2023
NTS CONTRACTORS, CORP308/22/2024
HAUSMAN PLUMBING INC208/15/2022
SKYE RISE CONSTRUCTION207/01/2026
3X RESTORATION CORP109/17/2024
ACCURATE MECHANICAL INC101/09/2026
ARIANA CONTRACTING INC104/17/2025
AUTHENTIC PLBG CORP108/22/2024
BMT PLUMBING & HEATING LL109/30/2024
GARRITY CONTRACTING LLC102/14/2024
HYDROKINETIC PLBG & HTG I103/26/2021
J & S METRO CONTRACTING *108/15/2022
JZ GENERAL CONSTRUCTION104/17/2025
ORBIT PLBG & HTG INC102/14/2024
P.H. WORKS INC107/26/2021
PRINCETON INTERIORS INC101/09/2026
SERVICE TECH MECH&PLBG IN108/22/2024
SUPREME GEN.CONTR INC107/02/2021
TMS PLBG & HEATING CORP101/13/2020
WHITE LEAF MECHANICAL COR110/19/2022
XOLLE DEMO LLC107/26/2021
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
636 BROADWAY ASSOCIATES307/01/2026
AKAM ASSOCIATES, INC.206/30/2026
BENCHMARK REAL ESTATE210/19/2022
JUSTIN MANAGEMENT209/01/2021
DOUGLAS ELLIMAN PROPERTY MANAGEMENT102/16/2022
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.2307/01/2026
WILLIAM VITACCO ASSOCIATES109/30/2024
37 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 37Open permit 9Signed off 24Filed only 4
Any typeAlteration 34Alteration CO 2No Work 1
37 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01064900 ↗55 CENTRAL PARK WEST
MANHATTAN
AlterationPermit Issued09/09/202408/26/2026Herewith 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-off06/26/202607/10/2026SUBSQUENT 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-off06/26/202607/10/2026SUBSQUENT STRUCTURAL FILING FOR NEW CONVENIENCE OPENING, REMOVING MASONRY AND INSTALL STEEL SUPPORT FOR NEW PASS THROUGH TO 636 BROADWAY AS …
B01319417 ↗57 MASPETH AVENUE
BROOKLYN
AlterationPermit Issued11/24/202507/07/2026Herewith Filing Structural Work in conjunction with interior renovations, proposed is a new stair opening/assembly and extension of existing…
M01234696 ↗12 WEST 72 STREET
MANHATTAN
AlterationPermit Issued06/10/202502/17/2026SUBSQUENT PLUMBING WORK FOR APT 12A AS SHOWN HEREWITH. NO CHANGES TO EGRESS, OCCUPANCY OR USE.
M01231938 ↗12 WEST 72 STREET
MANHATTAN
AlterationFiled — no permit on record06/03/2025——
M01191106 ↗333 WEST END AVENUE
MANHATTAN
AlterationSigned-off04/09/202504/22/2025Herewith filing Plumbing scope in conjunction with renovations to existing bathroom in Apartment 1A and removal of fixtures as outlined on p…
M01094818 ↗64 EAST 86 STREET
MANHATTAN
AlterationSigned-off08/22/202404/02/2025SUBSQUENT 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-off08/15/202302/06/2025PLUMBING MODIFICATIONS -NEW ADA BATHROOM TO BE ADDED AND ASSOCIATED PIPING AS PER PLANS FILED (168 Crosby Street AKA 636 Broadway). NO CHAN…
M01009754 ↗636 BROADWAY
MANHATTAN
AlterationSigned-off05/06/202401/22/2025Legalization of Health and Fitness on second floor construction work completed without a permit to correct violation # 35444032J as shown he…
M01048843 ↗36 WEST 24 STREET
MANHATTAN
AlterationSigned-off05/09/202410/31/2024INTERIOR PLUMBING WORK AS SHOWN HEREWITH. NO CHANGES TO EGRESS, OCCUPANCY OR USE.
B00632236 ↗86 BERGEN STREET
BROOKLYN
Alteration COPermit Issued05/03/202208/30/2024Herewith Filing Alt-1 Application to capture change in bldg. occupancy group R-2 to R-3, interior renovations as per plans filed.
M00903595 ↗230 PARK AVENUE
MANHATTAN
AlterationPermit Issued12/13/202303/18/2024MEZEH GRILL - 1ST FLOOR - FILING INTERIOR WORK ONLY. MINOR PARTITION WORK AND MILLWORK AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
M00985031 ↗1040 5 AVENUE
MANHATTAN
AlterationSigned-off02/14/202403/12/2024Plumbing modifications in apartment 8A as per shown on plans filed herewith. No change in egress occupancy or use.
M00942536 ↗636 BROADWAY
MANHATTAN
Alteration COPermit Issued11/10/202301/05/2024Minor partition work and finishes at first floor and cellar. Change of use at the cellar and 1st floor.
M00246526 ↗215 EAST 79 STREET
MANHATTAN
AlterationPermit Issued01/13/202012/19/2023New plumbing fixtures installed in existing & new bathrooms and existing kitchen
M00942537 ↗636 BROADWAY
MANHATTAN
No WorkFiled — no permit on record11/14/2023———
M08048179 ↗784 PARK AVENUE
MANHATTAN
AlterationSigned-off12/02/202207/24/2023Herewith Filing Renovations in apartment 18A and accessory terrace as per shown on plans filed. No change in use, egress, occupancy proposed…
M00791131 ↗1690 BROADWAY
MANHATTAN
AlterationPermit Issued09/13/202204/04/2023FILING INTERIOR WORK ONLY. MINOR PARTITION WORK, PLUMBING AND MILL WORK. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
M08051881 ↗826 MADISON AVENUE
MANHATTAN
AlterationSigned-off12/28/202201/12/2023Facade repairs and as per plans filed herewith. No change in use, egress or occupancy under this application.
M08048196 ↗784 PARK AVENUE
MANHATTAN
AlterationSigned-off12/02/202212/16/2022Herewith 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-off10/19/202211/02/2022Mechanical system work as per plans filed herewith. No change in use, Egress or Occupancy.
B00528003 ↗159 DRIGGS AVENUE
BROOKLYN
AlterationSigned-off07/02/202108/11/2022Minor Interior Partition Work, Minor Demolition Work, New Window Openings at Facade as per drawings filed herewith. No change in use egress …
M00716393 ↗333 WEST END AVENUE
MANHATTAN
AlterationSigned-off05/18/202207/11/2022Herewith Filing Interior Renovations scope of work includes the demolition/installation of non-load bearing partitions and other work as per…
M00725024 ↗10 UNION SQUARE EAST
MANHATTAN
AlterationSigned-off05/09/202206/30/2022PLUMBING MODIFICATIONS AT 22ND FLOOR,UNIT V22C, RELATED TO INTERIOR RENOVATION WORK AS SHOWN ON PLANS FILED.
M00716600 ↗333 WEST END AVENUE
MANHATTAN
AlterationSigned-off05/18/202206/09/2022Herewith Filing Plumbing Work in conjunction with interior renovations. No change in use, egress or occupancy proposed under this applicatio…
M00575909 ↗826 MADISON AVENUE
MANHATTAN
AlterationSigned-off08/23/202111/10/2021interior cosmetic work as per plans filed herewith. No change in egress, use or occupancy .
M00575895 ↗826 MADISON AVENUE
MANHATTAN
AlterationSigned-off08/23/202110/25/2021Replacement of existing fixtures & propose 1 new utility sink in cellar space. as per plans filed herewith.
M00576719 ↗894 BROADWAY
MANHATTAN
AlterationSigned-off09/01/202109/03/2021INTERIOR RENOVATION OF AN EXISTING COMMERCIAL SPACE TO INCLUDE CEILING MODIFICATIONS, NEW DOORS, FINISHES AND RELATED CONSTRUCTION AS INDICA…
B00543326 ↗159 DRIGGS AVENUE
BROOKLYN
AlterationSigned-off07/02/202108/30/2021MINOR PLUMBING WORK FILE HEREWITH AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
M00574184 ↗894 BROADWAY
MANHATTAN
AlterationSigned-off08/20/202108/24/2021NON-STRUCTURAL INTERIOR DEMO WORK IN COMMERCIAL SPACE AS SHOWN ON PLANS FILED. NO CHANGE IN USE, EGRESS OR OCCUPANCY UNDER THIS APPLICATION
B00563781 ↗86 BERGEN STREET
BROOKLYN
AlterationSigned-off07/26/202108/13/2021
Contractor P.H. WORKS INC
Herewith Filing Plumbing Work in conjunction with Interior Demolition, Work Scope includes the removal of plumbing fixtures, kitchen Equipme…
B00563750 ↗86 BERGEN STREET
BROOKLYN
AlterationSigned-off07/26/202108/10/2021
Contractor XOLLE DEMO LLC
Herewith Filing Interior Demolition of Non-Structural Partitions and Existing Mill Work - Related Plumbing to be filed via separate applicat…
M00247116 ↗1327 MADISON AVENUE
MANHATTAN
AlterationSigned-off12/06/201901/28/2021Replace bathroom & kitchen plumbing fixtures in apartment 32B.
M00294249 ↗1035 5 AVENUE
MANHATTAN
AlterationPermit Issued01/17/202002/25/2020Replace bathroom & kitchen plumbing fixtures in Apt. 1-f-1
M07994210784 PARK AVENUE
MANHATTAN
AlterationFiled — no permit on record————
M08037162784 PARK AVENUE
MANHATTAN
AlterationFiled — no permit on record———
Scope of Work
HVAC — 1 project
Air Conditioning Systems
Plumbing — 5 projects · most recent 06/30/2026
Water/Sanitary Gas
Structural — 3 projects · most recent 07/01/2026
Masonry Steel
Earthwork — 1 project · most recent 01/09/2026
Tenant Protection Plan 72 Hour
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
636 BROADWAY ↗1006/25/2026
632 BROADWAY ↗106/25/2026
12 WEST 72 STREET ↗806/22/2026
57 MASPETH AVENUE ↗211/14/2025
333 WEST END AVENUE ↗403/06/2025
36 WEST 24 STREET ↗312/30/2024
86 BERGEN STREET ↗609/16/2024
64 EAST 86 STREET ↗308/12/2024
1040 5 AVENUE ↗201/04/2024
784 PARK AVENUE ↗512/14/2022
10 UNION SQUARE EAST ↗708/09/2022
826 MADISON AVENUE ↗610/01/2021
894 BROADWAY ↗208/13/2021
1035 5 AVENUE ↗207/26/2021
1327 MADISON AVENUE ↗403/23/2021
159 DRIGGS AVENUE ↗2—
55 CENTRAL PARK WEST ↗2—
215 EAST 79 STREET ↗1—
1690 BROADWAY ↗1—
230 PARK AVENUE ↗1—
▾Documents — 376 on file (BIS + DOB NOW)
▸Plans & Drawings70
▸DOB NOWPlans/Sketch63
09/03/2026M00574184-I1 · 894 BROADWAYRequest digital key ↗
Showing 3 of 63 on file for this type
▸DOB NOWPlans/Sketch - Plumbing6
09/02/2026M00294249-I1 · 1035 5 AVENUERequest digital key ↗
Showing 3 of 6 on file for this type
▸DOB NOWPlans/Sketch - Place of Assembly1
08/28/2026M00942537-I1 · 636 BROADWAYRequest digital key ↗
▸Applications & Permits43
▸DOB NOWLPC Approval/Permit43
09/03/2026M00574184-I1 · 894 BROADWAYOpen ↗
09/02/2026M00716393-I1 · 333 WEST END AVENUEOpen ↗
08/26/2026M00942536-I1 · 636 BROADWAYOpen ↗
Showing 3 of 43 on file for this type
▸Zoning, Tax Lot & Property Records4
▸DOB NOWZD1: DOB Zoning Diagram3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸DOB NOWHouse Number Verification: TOPO Stamp1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Seals & Professional Certifications136
▸DOB NOWDPL-1: Design Professional Seal & Signature70
09/05/2026M00246526-I1 · 215 EAST 79 STREETOpen ↗
09/04/2026M00247116-P2 · 1327 MADISON AVENUEOpen ↗
09/04/2026M00247116-P1 · 1327 MADISON AVENUEOpen ↗
Showing 3 of 70 on file for this type
▸DOB NOWProgress Inspector Seal & Signature46
09/02/2026B00632236-P1 · 86 BERGEN STREETOpen ↗
09/02/2026B00632236-P1 · 86 BERGEN STREETOpen ↗
09/01/2026M08048179-I1 · 784 PARK AVENUEOpen ↗
Showing 3 of 46 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature20
09/01/2026M08048179-I1 · 784 PARK AVENUEOpen ↗
09/01/2026M00901225-P2 · 636 BROADWAYOpen ↗
08/31/2026B01319417-S3 · 57 MASPETH AVENUEOpen ↗
Showing 3 of 20 on file for this type
▸Safety & Tenant Protection15
▸DOB NOWTenant Protection Plan6
08/13/2026M00246526-I1 · 215 EAST 79 STREETOpen ↗
08/13/2026M00247116-P1 · 1327 MADISON AVENUEOpen ↗
08/13/2026M00247116-P2 · 1327 MADISON AVENUEOpen ↗
Showing 3 of 6 on file for this type
▸DOB NOWStreet Tree Checklist5
08/26/2026M00942536-I1 · 636 BROADWAYOpen ↗
08/24/2026B00632236-P1 · 86 BERGEN STREETOpen ↗
08/13/2026M00942536-P1 · 636 BROADWAYOpen ↗
Showing 3 of 5 on file for this type
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan2
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 2 on file for this type
▸DOB NOWStreet Trees Site Plan1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸DOB NOWStreet Tree Sign Off1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Environmental & Asbestos64
▸DOB NOWDEP ACP-5: Asbestos Assessment Report64
09/05/2026M00246526-I1 · 215 EAST 79 STREETOpen ↗
09/04/2026M00247116-P1 · 1327 MADISON AVENUEOpen ↗
09/04/2026M00247116-I1 · 1327 MADISON AVENUEOpen ↗
Showing 3 of 64 on file for this type
▸Energy Compliance3
▸DOB NOWEN2: As Built Energy Analysis3
08/13/2026B00528003-I1 · 159 DRIGGS AVENUEOpen ↗
Showing 1 of 3 on file for this type
▸Approvals, Objections & Sign-offs1
▸DOB NOWLandmark Approval1
08/13/2026M07994210-I1 · 784 PARK AVENUEOpen ↗
▸Other Documents40
▸DOB NOWProof of Historic Building21
09/02/2026M00716393-I1 · 333 WEST END AVENUEOpen ↗
08/26/2026M00942536-I1 · 636 BROADWAYOpen ↗
08/13/2026M01231938-I1 · 12 WEST 72 STREETOpen ↗
Showing 3 of 21 on file for this type
▸DOB NOWProperty Ownership Certification5
08/26/2026M00942536-I1 · 636 BROADWAYOpen ↗
08/13/2026M00942536-P1 · 636 BROADWAYOpen ↗
Showing 2 of 5 on file for this type
▸DOB NOWSite Survey: Initial3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸DOB NOWSURVEY: INITIAL3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸DOB NOWPlot Diagram3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸DOB NOWProject Specific General Liability (PGL1)1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸DOB NOWFinal Survey1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type