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Design Firm
DDT ENGINEERING PLLC
Design
22 projects with open permitsMANHATTAN · 18BROOKLYN · 8QUEENS · 2
18 buildings
35
Total Filings
28
Projects on File
18
Buildings Worked
22
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month28 projects all-time
0369Mar '22 · 8Dec '24 · 2Jan '25 · 1Feb '25 · 1Jun '25 · 3Jul '25 · 2Aug '25 · 1Dec '25 · 3Jan '26 · 2Mar '26 · 2Apr '26 · 32023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit2279%
Signed off518%
Filed only14%
By project type
Alteration27
Alteration CO1
Most active buildings
All buildings →
1595 MADISON AVENUEMANHATTAN · 4 open · latest 08/19/2026
5 projects
103 NORTH 3 STREETBROOKLYN · 3 open · latest 06/15/2026
3 projects
460 MORGAN AVENUEBROOKLYN · latest 12/22/2025
3 projects
1980 1 AVENUEMANHATTAN · 2 open · latest 09/11/2026
2 projects
70-00 AUSTIN STREETQUEENS · 2 open · latest 04/09/2026
2 projects
301 WEST 53 STREETMANHATTAN · latest 03/11/2026
1 projects
Key relationships
Everyone →
Filing representatives
Owners
Daniel Tosunlatest 05/10/2026
31 filings
Filed under
DDT ENGINEERING PLLC35
Identified by the contact ids of the people who file for the firm and by its email domain (ddtengineering.com), not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01379384 ↗138 WEST 72 STREET
MANHATTAN
AlterationPermit Issued03/27/202609/14/2026
Contractor ELITE GC NY INC
Renovation of eating and drinking establishment. Partition work. Finishes.
M00606301 ↗1980 1 AVENUE
MANHATTAN
AlterationPermit Issued03/23/202209/11/2026NYCHA EAST RIVER BOILERS CONSISTING OF GENERAL CONSTRUCTION IN THE CELLAR AND 1ST FLOOR AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRE…
M00607201 ↗1980 1 AVENUE
MANHATTAN
AlterationPermit Issued03/23/202209/11/2026NYCHA EAST RIVER BOILERS CONSISTING OF GENERAL CONSTRUCTION IN THE CELLAR AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS, OR OCCUPAN…
M01255117 ↗1595 MADISON AVENUE
MANHATTAN
AlterationPermit Issued07/14/202508/19/2026
Owner NYCHA
LEHMAN VILLAGE HOUSES, INSTALLATION OF TEMPBOILER STACKS, STEAM, CONDENSATE, MAKE-UP WATER PIPING CONNECTED TO EXISTING HEATING PLANT TO PRO…
M01255114 ↗1595 MADISON AVENUE
MANHATTAN
AlterationPermit Issued07/14/202507/08/2026
Owner NYCHA
LEHMAN VILLAGE HOUSES BUILDING#4 INSTALLATION OF TEMPORARY GAS PIPING IN THE BOILER ROOM TO CONNECT 2 MOBILE BOILER TRAILERS TO PROVIDE HEAT…
M01266575 ↗161 EAST 81 STREET
MANHATTAN
Alteration COPermit Issued08/27/202507/02/2026
Owner Elysee
PLUMBING WORK HAS BEEN FILED IN CONJUNCTION WITH JOB# M01266575-I1 AS PER PLAN SUBMITTED
Counts cover all 28 projects (28 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
Daniel Tosun3105/10/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
RONNETTE RILEY ARCHITECT804/24/2025
SERDAR CEYLAN ARCHITECT, PC605/14/2026
E.G. ARCHITECTURE PLLC105/26/2026
ROCDA PE PC105/26/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
AWL INDUSTRIES INC1207/14/2025
ELITE GC NY INC505/26/2026
EASTERN PLBG & MECH CONTR309/15/2025
CHAMPION COMBUSTION CORP212/12/2025
DEPENDABLE MECHANICAL COR103/26/2026
J. CAIAZZO PLBG & HTG COR105/26/2026
MKNK WASTE REMOVAL INC101/05/2026
PEEPS SERVICES INC104/07/2026
T.A. AHERN CONTRACTO CORP104/27/2026
WATSON'S PLBG, HTG, & BDG104/07/2026
WELLDONE INSPECTIONS INC105/14/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
NYC Housing Authority804/24/2025
NYCHA412/11/2025
AWL INDUSTRIES, INC.212/12/2025
MUSS DEVELOPMENT LLC203/26/2026
Elysee104/07/2026
KIZNER ASSOCIATES INC.105/26/2026
NYC SCHOOL CONSTRUCTION AUTHORITY104/27/2026
PERVAIZ IQBAL PHYSICIAN PC105/14/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
MUNICIPAL BUILDING CONSULTANTS504/21/2025
JOSEPH FELLNER105/26/2026
28 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 28Open permit 22Signed off 5Filed only 1
Any typeAlteration 27Alteration CO 1
28 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01379384 ↗138 WEST 72 STREET
MANHATTAN
AlterationPermit Issued03/27/202609/14/2026
Contractor ELITE GC NY INC
Renovation of eating and drinking establishment. Partition work. Finishes.
M00606301 ↗1980 1 AVENUE
MANHATTAN
AlterationPermit Issued03/23/202209/11/2026NYCHA EAST RIVER BOILERS CONSISTING OF GENERAL CONSTRUCTION IN THE CELLAR AND 1ST FLOOR AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRE…
M00607201 ↗1980 1 AVENUE
MANHATTAN
AlterationPermit Issued03/23/202209/11/2026NYCHA EAST RIVER BOILERS CONSISTING OF GENERAL CONSTRUCTION IN THE CELLAR AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS, OR OCCUPAN…
M01255117 ↗1595 MADISON AVENUE
MANHATTAN
AlterationPermit Issued07/14/202508/19/2026
Owner NYCHA
LEHMAN VILLAGE HOUSES, INSTALLATION OF TEMPBOILER STACKS, STEAM, CONDENSATE, MAKE-UP WATER PIPING CONNECTED TO EXISTING HEATING PLANT TO PRO…
M01255114 ↗1595 MADISON AVENUE
MANHATTAN
AlterationPermit Issued07/14/202507/08/2026
Owner NYCHA
LEHMAN VILLAGE HOUSES BUILDING#4 INSTALLATION OF TEMPORARY GAS PIPING IN THE BOILER ROOM TO CONNECT 2 MOBILE BOILER TRAILERS TO PROVIDE HEAT…
M01266575 ↗161 EAST 81 STREET
MANHATTAN
Alteration COPermit Issued08/27/202507/02/2026
Owner Elysee
PLUMBING WORK HAS BEEN FILED IN CONJUNCTION WITH JOB# M01266575-I1 AS PER PLAN SUBMITTED
B01377556 ↗103 NORTH 3 STREET
BROOKLYN
AlterationPermit Issued04/19/202606/15/2026
Contractor ELITE GC NY INC
INTERIOR RENOVATIONOF EXISTING APARTMENT 3A ON THIRD FLOOR. NOT CONSTITUTE CHANGES IN FLOOR AREA, USE AND OCCUPANCY.
B01377568 ↗103 NORTH 3 STREET
BROOKLYN
AlterationPermit Issued04/08/202605/13/2026
Contractor ELITE GC NY INC
INTERIOR RENOVATIONOF EXISTING APARTMENT 4B ON FOURTH FLOOR. NOT CONSTITUTE CHANGES IN FLOOR AREA, USE AND OCCUPANCY.
B01377550 ↗103 NORTH 3 STREET
BROOKLYN
AlterationPermit Issued04/05/202604/24/2026
Contractor ELITE GC NY INC
INTERIOR RENOVATIONOF EXISTING APARTMENT 2C ON SECOND FLOOR. NOT CONSTITUTE CHANGES IN FLOOR AREA, USE AND OCCUPANCY.
Q01378576 ↗70-00 AUSTIN STREET
QUEENS
AlterationPermit Issued03/26/202604/09/2026RELOCATION OF RESTROOM SPRINKLER HEADS AND CHANGING ORIENTATION OF SPRINKLERS. NO CHANGE IN USE OR EGRESS.
M01330025 ↗301 WEST 53 STREET
MANHATTAN
AlterationSigned-off01/07/202603/11/2026
Contractor ELITE GC NY INC
HVAC RENOVATION OF THE FRONT-OF-HOUSE AREA OF AN EXISTING FIRST-FLOOR RESTAURANT SPACE, INCLUDING REPLACEMENT OF THE EXISTING AHU LOCATED AT…
B01338448 ↗8301 SHORE ROAD
BROOKLYN
AlterationPermit Issued01/05/202602/20/2026INSTALLATION OF 8 FEET HIGH CONSTRUCTION FENCE TO SECURE THE STAGING AREA AND INSTSALL NEW EQUIPMENT. NO CHANGE IN USE, EGRESS, OR OCCUPANCY…
M01162873 ↗1595 MADISON AVENUE
MANHATTAN
AlterationPermit Issued01/07/202501/29/2026
Owner NYCHA
NYCHA Lehman Village House Building#4 Sidewalk shed installation for temporary boiler connection to exiting building #4 and new liner instal…
M01159133 ↗1595 MADISON AVENUE
MANHATTAN
AlterationPermit Issued12/24/202401/12/2026Temporary fence construction for staging and temporary boiler area
M00606184 ↗1980 1 AVENUE
MANHATTAN
AlterationPermit Issued03/24/202201/09/2026NYCHA EAST RIVER BOILERS CONSISTING OF GENERAL CONSTRUCTION IN THE CELLAR AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS, OR OCCUPAN…
M01322254 ↗1820 AMSTERDAM AVENUE
MANHATTAN
AlterationPermit Issued12/05/202501/02/2026INTERIOR RENOVATION OF EXISTING OFFICE SPACE ON THE FIRST FLOOR. DOES NOT CONSTITUTE ANY CHANGE IN USE, FLOOR AREA, EGRESS OR OCCUPANCY.
B01329511 ↗460 MORGAN AVENUE
BROOKLYN
AlterationSigned-off12/08/202512/22/2025ADDING #2 FUEL OIL AS AN ADDITIONAL FUEL TO THE BOILER AND DUAL FUEL BURNER ON MOBILE TRAILER MBR-862. TRAILERS WERE ORIGINALLY FILED UNDER …
M01331709 ↗1595 MADISON AVENUE
MANHATTAN
AlterationSigned-off12/11/202512/16/2025
Owner NYCHA
INSTALLATION OF TEMPORARY FUEL STORAGE TANK AND ASSOCIATED PIPING TO SERVE TEMPORARY BOILERS TO MAINTAIN HEAT TO THE DEVELOPMENT. NO CHANGE …
M01149568 ↗1980 1 AVENUE
MANHATTAN
AlterationPermit Issued12/02/202412/05/2025Temporary construction fence for staging area
M00607098 ↗1980 1 AVENUE
MANHATTAN
AlterationPermit Issued03/24/202211/14/2025NYCHA EAST RIVER BOILERS CONSISTING OF GENERAL CONSTRUCTION IN THE CELLAR AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS, OR OCCUPAN…
M00607079 ↗1980 1 AVENUE
MANHATTAN
AlterationPermit Issued03/24/202210/20/2025NYCHA EAST RIVER BOILERS CONSISTING OF GENERAL CONSTRUCTION IN THE CELLAR AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS, OR OCCUPAN…
M00606354 ↗1980 1 AVENUE
MANHATTAN
AlterationPermit Issued03/23/202210/07/2025NYCHA EAST RIVER BOILERS CONSISTING OF GENERAL CONSTRUCTION IN THE CELLAR AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS, OR OCCUPAN…
M00607128 ↗1980 1 AVENUE
MANHATTAN
AlterationPermit Issued03/23/202210/07/2025NYCHA EAST RIVER BOILERS CONSISTING OF GENERAL CONSTRUCTION IN THE CELLAR AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS, OR OCCUPAN…
M00607811 ↗1980 1 AVENUE
MANHATTAN
AlterationPermit Issued03/23/202210/07/2025NYCHA EAST RIVER BOILERS CONSISTING OF GENERAL CONSTRUCTION IN THE CELLAR AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS, OR OCCUPAN…
Q01232905 ↗70-00 AUSTIN STREET
QUEENS
AlterationPermit Issued06/01/202507/25/2025INTERIOR RENOVATION OF A EXISTING RESTAURANT AT BASEMENT LEVEL IN EXISTING COMMERCIAL BUILDING AS PER PLAN AND APPLICATIONS SUBMITTED. NO CH…
B01234436 ↗460 MORGAN AVENUE
BROOKLYN
AlterationSigned-off06/02/202506/17/2025INSTALLATION OF A NEW BOILER AND A NEW BURNER TO CREATE A MOBILE BOILER TRAILER UNIT # MBR-861. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
B01234439 ↗460 MORGAN AVENUE
BROOKLYN
AlterationSigned-off06/02/202506/17/2025INSTALLATION OF A NEW BOILER AND A NEW BURNER TO CREATE A MOBILE BOILER TRAILER UNIT # MBR-862. NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
B01076573 ↗12 SUYDAM PLACE
BROOKLYN
AlterationFiled — no permit on record02/24/2025———
Scope of Work
HVAC — 6 projects · most recent 05/14/2026
Heating and Air Conditioning Systems Refrigeration Systems Air Conditioning Systems Others
Sprinkler / Standpipe — 3 projects · most recent 05/14/2026
Sprinkler System
Plumbing — 5 projects · most recent 05/26/2026
Gas Water/Sanitary
Structural — 2 projects · most recent 05/26/2026
Wood
Fence / Scaffold / Sign / Shed — 10 projects · most recent 04/27/2026
Fence Sidewalk Shed
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
138 WEST 72 STREET ↗205/10/2026
103 NORTH 3 STREET ↗304/24/2026
8301 SHORE ROAD ↗204/23/2026
1820 AMSTERDAM AVENUE ↗104/11/2026
70-00 AUSTIN STREET ↗203/26/2026
301 WEST 53 STREET ↗202/03/2026
460 MORGAN AVENUE ↗512/12/2025
1595 MADISON AVENUE ↗612/10/2025
161 EAST 81 STREET ↗110/05/2025
1980 1 AVENUE ↗212/22/2024
1980 1 AVENUE ↗210/14/2024
1980 1 AVENUE ↗110/14/2024
1980 1 AVENUE ↗110/14/2024
1980 1 AVENUE ↗110/14/2024
1980 1 AVENUE ↗110/14/2024
1980 1 AVENUE ↗110/14/2024
1980 1 AVENUE ↗110/14/2024
12 SUYDAM PLACE ↗1—
▾Documents — 292 on file (BIS + DOB NOW)
▸Plans & Drawings56
▸DOB NOWPlans/Sketch56
09/02/2026M00607128-S1 · 1980 1 AVENUERequest digital key ↗
09/02/2026M00606354-S1 · 1980 1 AVENUERequest digital key ↗
08/25/2026M00607201-S1 · 1980 1 AVENUERequest digital key ↗
Showing 3 of 56 on file for this type
▸Applications & Permits7
▸DOB NOWLPC Approval/Permit4
08/13/2026M01322254-I1 · 1820 AMSTERDAM AVENUEOpen ↗
Showing 1 of 4 on file for this type
▸DOB NOWHPD Certification Letter or CPC Special Permit3
08/17/2026B01377568-I1 · 103 NORTH 3 STREETOpen ↗
08/13/2026B01377550-I1 · 103 NORTH 3 STREETOpen ↗
08/13/2026B01377556-I1 · 103 NORTH 3 STREETOpen ↗
▸Zoning, Tax Lot & Property Records1
▸DOB NOWZD1: DOB Zoning Diagram1
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 Certifications126
▸DOB NOWDPL-1: Design Professional Seal & Signature56
08/25/2026M00607811-S1 · 1980 1 AVENUEOpen ↗
08/25/2026M00607811-I1 · 1980 1 AVENUEOpen ↗
08/25/2026M00606301-S1 · 1980 1 AVENUEOpen ↗
Showing 3 of 56 on file for this type
▸DOB NOWProgress Inspector Seal & Signature40
09/29/2026M00606184-I1 · 1980 1 AVENUEOpen ↗
09/29/2026M00606184-I1 · 1980 1 AVENUEOpen ↗
09/29/2026M00606184-I1 · 1980 1 AVENUEOpen ↗
Showing 3 of 40 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature30
09/29/2026M00606184-I1 · 1980 1 AVENUEOpen ↗
09/23/2026M01330025-I1 · 301 WEST 53 STREETOpen ↗
09/23/2026Q01378576-I1 · 70-00 AUSTIN STREETOpen ↗
Showing 3 of 30 on file for this type
▸Safety & Tenant Protection9
▸DOB NOWCertificate of No Harassment3
08/17/2026B01377568-I1 · 103 NORTH 3 STREETOpen ↗
08/13/2026B01377556-I1 · 103 NORTH 3 STREETOpen ↗
08/13/2026B01377550-I1 · 103 NORTH 3 STREETOpen ↗
▸DOB NOWStreet Tree Checklist2
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 2 on file for this type
▸DOB NOWNYCSCA - Approved Site Safety Plans2
08/17/2026B01338448-P1 · 8301 SHORE ROADOpen ↗
08/13/2026B01338448-I1 · 8301 SHORE ROADOpen ↗
▸DOB NOWHPD-2: Clinton Special District Anti-Harassment Checklist2
08/13/2026M01330025-P1 · 301 WEST 53 STREETOpen ↗
08/13/2026M01330025-I1 · 301 WEST 53 STREETOpen ↗
▸Environmental & Asbestos34
▸DOB NOWDEP ACP-5: Asbestos Assessment Report30
08/22/2026B01076573-I1 · 12 SUYDAM PLACEOpen ↗
08/21/2026M01266575-S2 · 161 EAST 81 STREETOpen ↗
08/20/2026M01322254-S2 · 1820 AMSTERDAM AVENUEOpen ↗
Showing 3 of 30 on file for this type
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form4
08/22/2026M01255117-I1 · 1595 MADISON AVENUEOpen ↗
08/13/2026M00607098-I1 · 1980 1 AVENUEOpen ↗
08/13/2026M01255114-I1 · 1595 MADISON AVENUEOpen ↗
Showing 3 of 4 on file for this type
▸Approvals, Objections & Sign-offs48
▸DOB NOWFee Exempt Supporting Document - DOF ACRIS report or BIB letter28
08/25/2026M00606301-S1 · 1980 1 AVENUEOpen ↗
08/24/2026M00606184-P1 · 1980 1 AVENUEOpen ↗
08/24/2026M00607098-I1 · 1980 1 AVENUEOpen ↗
Showing 3 of 28 on file for this type
▸DOB NOWDesign Commission Approval City Owned (Exterior Work)16
08/24/2026M00607098-I1 · 1980 1 AVENUEOpen ↗
08/21/2026M01255114-I1 · 1595 MADISON AVENUEOpen ↗
08/17/2026B01338448-P1 · 8301 SHORE ROADOpen ↗
Showing 3 of 16 on file for this type
▸DOB NOWDesign Commission Sign Off City Owned (Exterior Work)4
08/13/2026M01255114-I1 · 1595 MADISON AVENUEOpen ↗
08/13/2026M01331709-I1 · 1595 MADISON AVENUEOpen ↗
08/13/2026M01255117-I1 · 1595 MADISON AVENUEOpen ↗
Showing 3 of 4 on file for this type
▸Other Documents11
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone2
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 2 on file for this type
▸DOB NOWSite Survey: Initial2
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 2 on file for this type
▸DOB NOWNYCSCA - BCC Plan Examination Transmittal2
08/17/2026B01338448-P1 · 8301 SHORE ROADOpen ↗
08/13/2026B01338448-I1 · 8301 SHORE ROADOpen ↗
▸DOB NOWPlot Diagram2
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 2 on file for this type
▸DOB NOWProof of Historic Building1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸DOB NOWAdjoining Owners Notification1
08/21/2026M01266575-S4 · 161 EAST 81 STREETOpen ↗
▸DOB NOWProperty Ownership Certification1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type