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Design Firm
HAPSTAK DEMETRIOU PLLC
Design
1 project with open permitsBROOKLYN · 4
2 buildings
4
Total Filings
4
Projects on File
2
Buildings Worked
1
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month4 projects all-time
0112Oct '21 · 1Jan '23 · 1Mar '23 · 1Jan '24 · 1Oct '21Jan '22Apr '22Jul '22Oct '22Jan '23Apr '23Jul '23Oct '23Jan '24
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit125%
Signed off125%
Filed only250%
By project type
Alteration2
No Work2
Most active buildings
All buildings →
63 GUERNSEY STREETBROOKLYN · latest 03/21/2023
3 projects
46 WILSON AVENUEBROOKLYN · 1 open · latest 02/15/2024
1 projects
Key relationships
Everyone →
Filing representatives
Contractors
1 projects
PETER HAPSTAK IIIlatest 10/18/2021
1 filings
PETER HAPSTAK IIIlatest 01/17/2024
1 filings
Filed under
HAPSTAK DEMETRIOU PLLC4
Identified by the contact ids of the people who file for the firm and by its email domain (hd-ad.com), not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B00991480 ↗46 WILSON AVENUE
BROOKLYN
AlterationPermit Issued01/18/202402/15/2024
Contractor CAAD
Application filed for the installation of a front gate and replace of windows in the rear of building no change in use, egress or occupancy
B00828217 ↗63 GUERNSEY STREET
BROOKLYN
No WorkFiled — no permit on record03/21/2023———
B00814409 ↗63 GUERNSEY STREET
BROOKLYN
No WorkFiled — no permit on record01/23/2023———
B00614189 ↗63 GUERNSEY STREET
BROOKLYN
AlterationSigned-off10/26/202106/27/2022
Contractor IN HOUSE GROUP
Removal and installation of interior non bearing partitions and related finishes as per plans filed herewith. No change in use, egress or oc…
Counts cover all 4 projects (4 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
PETER HAPSTAK III110/18/2021
PETER HAPSTAK III101/17/2024
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
CAAD LLC101/18/2024
IN HOUSE GROUP INC110/26/2021
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
NEXUS CONSULTING NYC, INC101/18/2024
OUTSOURCE CONSULTANTS, INC.110/26/2021
4 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 4Open permit 1Signed off 1Filed only 2
Any typeAlteration 2No Work 2
4 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B00991480 ↗46 WILSON AVENUE
BROOKLYN
AlterationPermit Issued01/18/202402/15/2024
Contractor CAAD
Application filed for the installation of a front gate and replace of windows in the rear of building no change in use, egress or occupancy
B00828217 ↗63 GUERNSEY STREET
BROOKLYN
No WorkFiled — no permit on record03/21/2023———
B00814409 ↗63 GUERNSEY STREET
BROOKLYN
No WorkFiled — no permit on record01/23/2023———
B00614189 ↗63 GUERNSEY STREET
BROOKLYN
AlterationSigned-off10/26/202106/27/2022
Contractor IN HOUSE GROUP
Removal and installation of interior non bearing partitions and related finishes as per plans filed herewith. No change in use, egress or oc…
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
46 WILSON AVENUE ↗101/17/2024
63 GUERNSEY STREET ↗310/18/2021
▾Documents — 15 on file (BIS + DOB NOW)
▸Plans & Drawings4
▸DOB NOWPlans/Sketch2
▸DOB NOWPlans/Sketch - Place of Assembly1
▸DOB NOWPlans/Sketch - Temporary Place of Assembly1
▸Seals & Professional Certifications9
▸DOB NOWDPL-1: Design Professional Seal & Signature4
08/31/2026B00614189-I1 · 63 GUERNSEY STREETOpen ↗
08/13/2026B00828217-I1 · 63 GUERNSEY STREETOpen ↗
08/13/2026B00814409-I1 · 63 GUERNSEY STREETOpen ↗
Showing 3 of 4 on file for this type
▸DOB NOWProgress Inspector Seal & Signature4
08/28/2026B00991480-I1 · 46 WILSON AVENUEOpen ↗
08/23/2026B00614189-I1 · 63 GUERNSEY STREETOpen ↗
08/23/2026B00614189-I1 · 63 GUERNSEY STREETOpen ↗
Showing 3 of 4 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature1
08/23/2026B00614189-I1 · 63 GUERNSEY STREETOpen ↗
▸Environmental & Asbestos1
▸DOB NOWDEP ACP-5: Asbestos Assessment Report1
08/14/2026B00614189-I1 · 63 GUERNSEY STREETOpen ↗
▸Energy Compliance1
▸DOB NOWEN2: As Built Energy Analysis.1
08/14/2026B00614189-I1 · 63 GUERNSEY STREETOpen ↗