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Design Firm
HD ARCHITECTURE PLLC
Design
4 projects with open permitsBROOKLYN · 7QUEENS · 4
9 buildings
30
Total Filings
11
Projects on File
9
Buildings Worked
4
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month9 projects all-time
0123Apr '20 · 1Nov '20 · 1Jun '21 · 1Aug '22 · 2Dec '23 · 1Apr '24 · 1Jul '24 · 1Jun '26 · 1202120222023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit436%
Signed off545%
Filed only218%
By project type
Alteration9
Alteration CO2
Most active buildings
All buildings →
2 projects
93-17 HOLLIS COURT BLVDQUEENS · latest 09/20/2022
2 projects
410 BERGEN STREETBROOKLYN · 1 open · latest 05/02/2025
1 projects
373 PROSPECT PLACEBROOKLYN · latest 03/03/2023
1 projects
73 UTICA AVENUEBROOKLYN · latest 05/31/2022
1 projects
21 VAN BUREN STREETBROOKLYN · latest 07/18/2023
1 projects
MARK HELDERlatest 08/17/2026
20 filings
Filed under
HD ARCHITECTURE PLLC30
Identified by the contact ids of the people who file for the firm and by its email domain (helderdesign.com), not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B01418654 ↗413 MOTHER GASTON BLVD
BROOKLYN
AlterationPermit Issued06/29/202607/23/2026Removal of unused gas fired boiler, in conjunction with PL application under the same job#
Q01044456 ↗162-24 TUSKEGEE AIRMEN WAY
QUEENS
Alteration COPermit Issued07/29/202405/14/2025Plumbing in conjunction with Alt-CO.
B00992112 ↗410 BERGEN STREET
BROOKLYN
Alteration COPermit Issued04/09/202405/02/2025
Contractor EFL SERVICES INC
Subsequent MS filing for cooling system and bathroom ventilation
Q00953542 ↗174 BEACH 98 STREET
QUEENS
AlterationPermit Issued12/02/202302/02/2024
Contractor KOM GOOD CHOICE
Replacement of fire damaged partitions, drywall, no change in layout. Replacement of affected windows. No change of use, egress and occupanc…
B00400814 ↗21 VAN BUREN STREET
BROOKLYN
AlterationSigned-off11/06/202007/18/2023Plumbing relocation/replacement with few additional fixtures in conjunction with Alt2 for existing old code 2 family building
B00283456 ↗373 PROSPECT PLACE
BROOKLYN
AlterationSigned-off04/30/202003/03/2023New Sprinkler installation for New Building
Counts cover all 11 projects (11 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
MARK HELDER2008/17/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
ORBIT PLBG & HTG INC208/18/2026
ARCO GENERAL CONTRACTOR I107/23/2026
BRUCHE MECHANICAL NY LLC104/28/2023
BT'S PLUMBING AND HEATING108/14/2024
EFL SERVICES INC107/27/2026
GREGG NY PLUMBING, INC107/27/2026
HORBRIDGE PLUMBING & HEAT108/10/2022
INFINITI ESC PLUMBING COR106/15/2021
KOM GOOD CHOICE INC108/14/2024
LLOYD G DRUMMOND PLBG&GEN106/01/2023
SHIV CONTRACTING INC108/10/2022
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
RAD PROPERTY DEVELOPMENT CORP2—
DANIELS NORELLI CECERE & TAVEL, PC.108/10/2022
RNY DEVELOPMENT GROUP104/28/2023
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
HIGHRISE GROUP104/28/2023
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 4Signed off 5Filed only 2
Any typeAlteration 9Alteration CO 2
11 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B01418654 ↗413 MOTHER GASTON BLVD
BROOKLYN
AlterationPermit Issued06/29/202607/23/2026Removal of unused gas fired boiler, in conjunction with PL application under the same job#
Q01044456 ↗162-24 TUSKEGEE AIRMEN WAY
QUEENS
Alteration COPermit Issued07/29/202405/14/2025Plumbing in conjunction with Alt-CO.
B00992112 ↗410 BERGEN STREET
BROOKLYN
Alteration COPermit Issued04/09/202405/02/2025
Contractor EFL SERVICES INC
Subsequent MS filing for cooling system and bathroom ventilation
Q00953542 ↗174 BEACH 98 STREET
QUEENS
AlterationPermit Issued12/02/202302/02/2024
Contractor KOM GOOD CHOICE
Replacement of fire damaged partitions, drywall, no change in layout. Replacement of affected windows. No change of use, egress and occupanc…
B00400814 ↗21 VAN BUREN STREET
BROOKLYN
AlterationSigned-off11/06/202007/18/2023Plumbing relocation/replacement with few additional fixtures in conjunction with Alt2 for existing old code 2 family building
B00283456 ↗373 PROSPECT PLACE
BROOKLYN
AlterationSigned-off04/30/202003/03/2023New Sprinkler installation for New Building
Q00743162 ↗93-17 HOLLIS COURT BLVD
QUEENS
AlterationSigned-off08/10/202209/20/2022Interior renovation with some window replacement and new windows. Replace current wood beams and support on 1st floor with steel. New heatin…
Q00769635 ↗93-17 HOLLIS COURT BLVD
QUEENS
AlterationSigned-off08/10/202208/30/2022Plumbing in conjunction with DOBNOW #Q00743162
B00454238 ↗73 UTICA AVENUE
BROOKLYN
AlterationSigned-off06/15/202105/31/2022BL WORKTYPE IN CONJUNCTION WITH BIS ALT2
B00346830402 UNION AVENUE
BROOKLYN
AlterationFiled — no permit on record———
B00361348402 UNION AVENUE
BROOKLYN
AlterationFiled — no permit on record———
Scope of Work
HVAC — 3 projects · most recent 07/27/2026
Ventilation Systems Air Conditioning Systems
Sprinkler / Standpipe — 1 project
No specific sub-scope on file — project count only.
Plumbing — 3 projects · most recent 07/27/2026
Water/Sanitary Gas Plumbing-Sprinkler
Structural — 2 projects · most recent 07/27/2026
Steel Concrete Wood
Fence / Scaffold / Sign / Shed — 1 project
Fence
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
413 MOTHER GASTON BLVD ↗408/17/2026
162-24 TUSKEGEE AIRMEN WAY ↗507/23/2026
410 BERGEN STREET ↗604/29/2026
174 BEACH 98 STREET ↗408/14/2024
21 VAN BUREN STREET ↗305/02/2023
93-17 HOLLIS COURT BLVD ↗207/06/2022
402 UNION AVENUE ↗206/22/2020
373 PROSPECT PLACE ↗3—
73 UTICA AVENUE ↗1—
▾Documents — 142 on file (BIS + DOB NOW)
▸Plans & Drawings25
▸DOB NOWPlans/Sketch18
Showing 3 of 18 on file for this type
▸DOB NOWPlans/Sketch - Sprinkler3
▸DOB NOWPlans/Sketch - Plumbing3
▸DOB NOWPlans/Sketch - Boiler Equipment1
09/01/2026B00454238-I1 · 73 UTICA AVENUERequest digital key ↗
▸Zoning, Tax Lot & Property Records1
▸DOB NOWRestrictive Declaration/Easement 11
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 Certifications84
▸DOB NOWProgress Inspector Seal & Signature37
09/02/2026Q00953542-S1 · 174 BEACH 98 STREETOpen ↗
09/01/2026Q00953542-I1 · 174 BEACH 98 STREETOpen ↗
09/01/2026Q00953542-I1 · 174 BEACH 98 STREETOpen ↗
Showing 3 of 37 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature25
09/01/2026B00454238-I1 · 73 UTICA AVENUEOpen ↗
08/26/2026Q00769635-I1 · 93-17 HOLLIS COURT BLVDOpen ↗
08/24/2026B00992112-P3 · 410 BERGEN STREETOpen ↗
Showing 3 of 25 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature22
09/01/2026Q00953542-I1 · 174 BEACH 98 STREETOpen ↗
08/28/2026Q01044456-P3 · 162-24 TUSKEGEE AIRMEN WAYOpen ↗
08/28/2026Q01044456-P3 · 162-24 TUSKEGEE AIRMEN WAYOpen ↗
Showing 3 of 22 on file for this type
▸Safety & Tenant Protection5
▸DOB NOWStreet Tree Checklist5
08/24/2026B00992112-P3 · 410 BERGEN STREETOpen ↗
Showing 1 of 5 on file for this type
▸Environmental & Asbestos12
▸DOB NOWDEP ACP-5: Asbestos Assessment Report9
08/26/2026Q00769635-I1 · 93-17 HOLLIS COURT BLVDOpen ↗
08/24/2026B00992112-P3 · 410 BERGEN STREETOpen ↗
08/13/2026B00400814-P1 · 21 VAN BUREN STREETOpen ↗
Showing 3 of 9 on file for this type
▸DOB NOWOER: Notice to Proceed3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸Energy Compliance1
▸DOB NOWEN2: As Built Energy Analysis1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Inspections & Test Reports8
▸DOB NOWHydrant Flow Test Letter3
09/02/2026B00283456-I1 · 373 PROSPECT PLACEOpen ↗
09/01/2026B00283456-P1 · 373 PROSPECT PLACEOpen ↗
08/15/2026B00283456-I1 · 373 PROSPECT PLACEOpen ↗
▸DOB NOWHydraulic Flow Calculations2
08/13/2026B00283456-P1 · 373 PROSPECT PLACEOpen ↗
08/13/2026B00283456-I1 · 373 PROSPECT PLACEOpen ↗
▸DOB NOWSOIL REPORT2
08/24/2026B00992112-P3 · 410 BERGEN STREETOpen ↗
Showing 1 of 2 on file for this type
▸DOB NOWTR4 Test Report and Plot Diagram1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Other Documents6
▸DOB NOWProperty Ownership Certification5
08/24/2026B00992112-P3 · 410 BERGEN STREETOpen ↗
Showing 1 of 5 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