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Design Firm
GMDC
Design
1 project with open permitsBROOKLYN · 5
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2 buildings
7
Total Filings
5
Projects on File
2
Buildings Worked
1
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month5 projects all-time
0123Sep '19 · 2Nov '20 · 2Jun '25 · 1202020212022202320242025
bars = month · line = 3-mo average
Portfolio status
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Open permit120%
Signed off240%
Filed only240%
By project type
Alteration5
Most active buildings
All buildings →
1155 MANHATTAN AVENUEBROOKLYN · 1 open · latest 12/04/2025
3 projects
249 MC KIBBIN STREETBROOKLYN · latest 09/16/2019
2 projects
Key relationships
Everyone →
Design firms
1 projects
Filing representatives
1 projects
1 projects
People
All people →
GUSTAVO MARTINEZlatest 05/30/2025
4 filings
Filed under
GMDC7
Identified by the contact ids of the people who file for the firm and by its email domain (gmdconline.org), not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B01233872 ↗1155 MANHATTAN AVENUE
BROOKLYN
AlterationPermit Issued06/17/202512/04/2025
Owner GMDC
Contractor MILCON CONSTRUCTION CORP
Filer JM ZONING, LLC.
HEREWITH FILING STRUCTURAL WORK AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY
B00430234 ↗1155 MANHATTAN AVENUE
BROOKLYN
AlterationSigned-off11/30/202007/08/2021
Owner GMDC
Contractor IRWIN FRIEDMAN & SON INC
Filer WALTER T. GORMAN, PE, PC
Subsequent application filed in order to renew permit to schedule plumbing inspection. No work to be done.
B00424463 ↗1155 MANHATTAN AVENUE
BROOKLYN
AlterationSigned-off11/19/202005/04/2021
Owner GMDC
Contractor IRWIN FRIEDMAN & SON INC
Filer WALTER T. GORMAN, PE, PC
Propose to install plumbing fixtures. No change to use, egress or occupancy.
B00213873 ↗249 MC KIBBIN STREET
BROOKLYN
AlterationFiled — no permit on record09/16/2019———
B00213886 ↗249 MC KIBBIN STREET
BROOKLYN
AlterationFiled — no permit on record09/16/2019———
Counts cover all 5 projects (5 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
GUSTAVO MARTINEZ405/30/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
OLD STRUCTURES ENGINEERING110/27/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
IRWIN FRIEDMAN & SON INC206/09/2021
MILCON CONSTRUCTION CORP110/27/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
JM ZONING, LLC.110/27/2025
WALTER T. GORMAN, PE, PC106/09/2021
5 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 5Open permit 1Signed off 2Filed only 2
5 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B01233872 ↗1155 MANHATTAN AVENUE
BROOKLYN
AlterationPermit Issued06/17/202512/04/2025
Owner GMDC
Contractor MILCON CONSTRUCTION CORP
Filer JM ZONING, LLC.
HEREWITH FILING STRUCTURAL WORK AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY
B00430234 ↗1155 MANHATTAN AVENUE
BROOKLYN
AlterationSigned-off11/30/202007/08/2021
Owner GMDC
Contractor IRWIN FRIEDMAN & SON INC
Filer WALTER T. GORMAN, PE, PC
Subsequent application filed in order to renew permit to schedule plumbing inspection. No work to be done.
B00424463 ↗1155 MANHATTAN AVENUE
BROOKLYN
AlterationSigned-off11/19/202005/04/2021
Owner GMDC
Contractor IRWIN FRIEDMAN & SON INC
Filer WALTER T. GORMAN, PE, PC
Propose to install plumbing fixtures. No change to use, egress or occupancy.
B00213873 ↗249 MC KIBBIN STREET
BROOKLYN
AlterationFiled — no permit on record09/16/2019———
B00213886 ↗249 MC KIBBIN STREET
BROOKLYN
AlterationFiled — no permit on record09/16/2019———
Scope of Work
Structural — 1 project · most recent 10/27/2025
Wood
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
1155 MANHATTAN AVENUE ↗505/30/2025
249 MC KIBBIN STREET ↗2—
▾Documents — 30 on file (BIS + DOB NOW)
▸Plans & Drawings9
▸DOB NOWPlans/Sketch5
09/02/2026B00430234-S1 · 1155 MANHATTAN AVENUERequest digital key ↗
08/20/2026B01233872-S1 · 1155 MANHATTAN AVENUERequest digital key ↗
08/20/2026B01233872-P1 · 1155 MANHATTAN AVENUERequest digital key ↗
Showing 3 of 5 on file for this type
▸DOB NOWPlans/Sketch - Curb Cut2
09/02/2026B00213886-I1 · 249 MC KIBBIN STREETRequest digital key ↗
09/02/2026B00213873-I1 · 249 MC KIBBIN STREETRequest digital key ↗
▸DOB NOWPlans/Sketch - Plumbing Legalization1
09/02/2026B00430234-I1 · 1155 MANHATTAN AVENUERequest digital key ↗
▸DOB NOWPlans/Sketch - Plumbing1
09/02/2026B00424463-I1 · 1155 MANHATTAN AVENUERequest digital key ↗
▸Seals & Professional Certifications17
▸DOB NOWDPL-1: Design Professional Seal & Signature9
09/02/2026B00424463-I1 · 1155 MANHATTAN AVENUEOpen ↗
09/02/2026B00430234-I1 · 1155 MANHATTAN AVENUEOpen ↗
09/02/2026B00430234-S1 · 1155 MANHATTAN AVENUEOpen ↗
Showing 3 of 9 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature6
09/01/2026B00424463-I1 · 1155 MANHATTAN AVENUEOpen ↗
08/27/2026B01233872-P2 · 1155 MANHATTAN AVENUEOpen ↗
08/24/2026B01233872-P1 · 1155 MANHATTAN AVENUEOpen ↗
Showing 3 of 6 on file for this type
▸DOB NOWProgress Inspector Seal & Signature2
08/23/2026B01233872-S1 · 1155 MANHATTAN AVENUEOpen ↗
08/23/2026B01233872-S1 · 1155 MANHATTAN AVENUEOpen ↗
▸Environmental & Asbestos4
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
09/02/2026B00424463-I1 · 1155 MANHATTAN AVENUEOpen ↗
09/02/2026B00430234-I1 · 1155 MANHATTAN AVENUEOpen ↗
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form2
08/13/2026B01233872-S1 · 1155 MANHATTAN AVENUEOpen ↗
08/13/2026B01233872-I1 · 1155 MANHATTAN AVENUEOpen ↗