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Tenant
Nycers
Tenant · filed under 2 names
1 project with open permitsBROOKLYN · 4
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1 building
4
Total Filings
4
Projects on File
1
Buildings Worked
1
Projects w/ Open Permits
Tenant
Primary Trade
Activity
Projects by first filing month4 projects all-time
0134Aug '22 · 3May '26 · 12023202420252026
bars = month · line = 3-mo average
Portfolio status
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Open permit125%
Signed off375%
By project type
Alteration4
Most active buildings
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335 ADAMS STREETBROOKLYN · 1 open · latest 06/30/2026
4 projects
Key relationships
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Design firms
2 projects
2 projects
Filing representatives
3 projects
1 projects
Contractors
3 projects
1 projects
Owners
4 projects
Filed under
Nycers3Nycers NYC Employees Retirement System1
Identified by the contact ids of the people who file for the firm and by its email domain, not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B01337936 ↗335 ADAMS STREET
BROOKLYN
AlterationPermit Issued05/26/202606/30/2026
Design HALSEY MCCORMACK HELMER INC
Owner MUSS DEVELOPMENT LLC
Contractor QUEST BUILDERS GROUP INC
Filer GREEN LIGHT EXPEDITING LLC
Filing interior renovations to exiting 1st floor space as per plans. No change in use, egress, or occupancy under this application.
B00647911 ↗335 ADAMS STREET
BROOKLYN
AlterationSigned-off08/18/202203/01/2023
Design HALSEY MCCORMACK HELMER INC
Owner MUSS DEVELOPMENT LLC
Contractor QUEST BUILDERS GROUP INC
Filer OUTSOURCE CONSULTANTS, INC.
Interior architectural modifications as per shown on plans filed herewith. Filed in conjunction with mechanical application B00648359-I1 and…
B00648359 ↗335 ADAMS STREET
BROOKLYN
AlterationSigned-off08/02/202203/01/2023
Design COSENTINI ASSOCIATES
Owner MUSS DEVELOPMENT LLC
Contractor QUEST BUILDERS GROUP INC
Filer OUTSOURCE CONSULTANTS, INC.
Interior Mechanical Modifications as per shown on plans filed herewith. Filed in conjunction with General construction application B00647911…
B00648399 ↗335 ADAMS STREET
BROOKLYN
AlterationSigned-off08/02/202209/21/2022
Design COSENTINI ASSOCIATES
Owner MUSS DEVELOPMENT LLC
Contractor SIRINA FIRE PROT CORP
Filer OUTSOURCE CONSULTANTS, INC.
Sprinkler modifications as per shown on plans filed herewith. No change in egress, occupancy, or use.
Counts cover all 4 projects (4 DOB NOW). Dated by first filing; BIS projects by first permit issuance.
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Cosentini Associates208/02/2022
Halsey McCormack Helmer205/26/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Quest Builders Group305/26/2026
Sirina Fire Protection108/02/2022
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Muss Development405/26/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Outsource Consultants308/18/2022
Green Light Expediting105/26/2026
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 3
4 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
B01337936 ↗335 ADAMS STREET
BROOKLYN
AlterationPermit Issued05/26/202606/30/2026
Design HALSEY MCCORMACK HELMER INC
Owner MUSS DEVELOPMENT LLC
Contractor QUEST BUILDERS GROUP INC
Filer GREEN LIGHT EXPEDITING LLC
Filing interior renovations to exiting 1st floor space as per plans. No change in use, egress, or occupancy under this application.
B00647911 ↗335 ADAMS STREET
BROOKLYN
AlterationSigned-off08/18/202203/01/2023
Design HALSEY MCCORMACK HELMER INC
Owner MUSS DEVELOPMENT LLC
Contractor QUEST BUILDERS GROUP INC
Filer OUTSOURCE CONSULTANTS, INC.
Interior architectural modifications as per shown on plans filed herewith. Filed in conjunction with mechanical application B00648359-I1 and…
B00648359 ↗335 ADAMS STREET
BROOKLYN
AlterationSigned-off08/02/202203/01/2023
Design COSENTINI ASSOCIATES
Owner MUSS DEVELOPMENT LLC
Contractor QUEST BUILDERS GROUP INC
Filer OUTSOURCE CONSULTANTS, INC.
Interior Mechanical Modifications as per shown on plans filed herewith. Filed in conjunction with General construction application B00647911…
B00648399 ↗335 ADAMS STREET
BROOKLYN
AlterationSigned-off08/02/202209/21/2022
Design COSENTINI ASSOCIATES
Owner MUSS DEVELOPMENT LLC
Contractor SIRINA FIRE PROT CORP
Filer OUTSOURCE CONSULTANTS, INC.
Sprinkler modifications as per shown on plans filed herewith. No change in egress, occupancy, or use.
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
335 ADAMS STREET ↗405/26/2026
▾Documents — 11 on file (BIS + DOB NOW)
▸Plans & Drawings4
▸DOB NOWPlans/Sketch4
08/28/2026B00648359-I1 · 335 ADAMS STREETRequest digital key ↗
08/28/2026B00648399-I1 · 335 ADAMS STREETRequest digital key ↗
08/28/2026B00647911-I1 · 335 ADAMS STREETRequest digital key ↗
Showing 3 of 4 on file for this type
▸Seals & Professional Certifications6
▸DOB NOWDPL-1: Design Professional Seal & Signature4
08/28/2026B00648359-I1 · 335 ADAMS STREETOpen ↗
08/28/2026B00648399-I1 · 335 ADAMS STREETOpen ↗
08/16/2026B01337936-I1 · 335 ADAMS STREETOpen ↗
Showing 3 of 4 on file for this type
▸DOB NOWProgress Inspector Seal & Signature2
08/26/2026B00647911-I1 · 335 ADAMS STREETOpen ↗
08/23/2026B01337936-I1 · 335 ADAMS STREETOpen ↗
▸Energy Compliance1
▸DOB NOWEN2: As Built Energy Analysis1
08/13/2026B00648359-I1 · 335 ADAMS STREETOpen ↗