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Skyline Developers
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9 projects with open permitsMANHATTAN · 11
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2 buildings
11
Total Filings
11
Projects on File
2
Buildings Worked
9
Projects w/ Open Permits
Tenant
Primary Trade
Activity
Projects by first filing month11 projects all-time
0134Nov '21 · 3Jan '22 · 1Feb '22 · 2Apr '22 · 2Dec '22 · 1Nov '23 · 1Feb '26 · 120222023202420252026
bars = month · line = 3-mo average
Portfolio status
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Open permit982%
Signed off218%
By project type
Alteration11
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1040 AVENUE OF THE AMERICASMANHATTAN · 7 open · latest 05/14/2026
9 projects
20 WEST 55TH STREETMANHATTAN · 2 open · latest 04/26/2022
2 projects
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7 projects
6 projects
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8 projects
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9 projects
4 projects
2 projects
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6 projects
2 projects
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01356040 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationPermit Issued02/27/202605/14/2026
Design ENV ARCHITECTS, DPC
Owner 1040 AVENUE OF THE AMERICAS, LLC
Contractor SKYLINE DEVELOPERS CONSTR
Filer RETHY ASSOCIATES, INC.
Modifications to Existing Sprinkler System on Part of the 17th Floor
M00947841 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationPermit Issued11/13/202311/29/2023
Design MG ENGINEERING D.P.C.
Owner 1040 Avenue of the Americas, LLC
Contractor SKYLINE DEVELOPERS CONSTR
Filer RETHY ASSOCIATES, INC.
Renovation of Existing Pantry Including Demolition & Installation of Plumbing Fixtures & Associated Piping, Replacement of Existing Non-Gas …
M08054896 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationPermit Issued12/27/202212/29/2022
Design ENV ARCHITECTS, DPC
Owner 1040 Avenue of the Americas, LLC
Contractor SKYLINE DEVELOPERS CONSTR
Filer RETHY ASSOCIATES, INC.
Demo. of Partitions, Doors, Suspended Ceiling, Millwork, Wall & Floor Finishes, Install Partitions, Doors, Suspended Ceiling, Millwork, Wall…
M00719033 ↗20 WEST 55TH STREET
MANHATTAN
AlterationPermit Issued04/22/202204/26/2022
Design MG ENGINEERING D.P.C.
Contractor SKYLINE DEVELOPERS CONSTR
Demolition of Existing Exhaust Fan & Some Minor Ductwork, Install 2 Ton Supplemental Air Conditioning Unit, Associated Ductwork & Piping, On…
M00717897 ↗20 WEST 55TH STREET
MANHATTAN
AlterationPermit Issued04/19/202204/22/2022
Design ENV ARCHITECTS, DPC
Contractor SKYLINE DEVELOPERS CONSTR
Demolition of Partitions, Doors, Portion of Existing Ceiling, Millwork, Wall & Floor Finishes, Installation of Partitions, Doors, Sheetrock …
M00665405 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationPermit Issued01/31/202203/09/2022
Design ENV ARCHITECTS, DPC
Owner 1040 Avenue of the Americas, LLC
Contractor SKYLINE DEVELOPERS CONSTR
Filer RETHY ASSOCIATES, INC.
Installation of Partitions, Doors, Door Hardware, Suspended Ceiling, Millwork, Wall & Floor Finishes on 16th Floor. No Change To Occupancy, …
Counts cover all 11 projects (11 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
MG Engineering703/01/2026
Env Architects603/01/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Skyline Developers Construction903/01/2026
Demar Plumbing403/01/2026
Demar Mechanical211/13/2023
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
1040 Avenue of the Americas603/01/2026
Rock 54211/16/2021
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Rethy Associates803/01/2026
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 9Signed off 2
11 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01356040 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationPermit Issued02/27/202605/14/2026
Design ENV ARCHITECTS, DPC
Owner 1040 AVENUE OF THE AMERICAS, LLC
Contractor SKYLINE DEVELOPERS CONSTR
Filer RETHY ASSOCIATES, INC.
Modifications to Existing Sprinkler System on Part of the 17th Floor
M00947841 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationPermit Issued11/13/202311/29/2023
Design MG ENGINEERING D.P.C.
Owner 1040 Avenue of the Americas, LLC
Contractor SKYLINE DEVELOPERS CONSTR
Filer RETHY ASSOCIATES, INC.
Renovation of Existing Pantry Including Demolition & Installation of Plumbing Fixtures & Associated Piping, Replacement of Existing Non-Gas …
M08054896 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationPermit Issued12/27/202212/29/2022
Design ENV ARCHITECTS, DPC
Owner 1040 Avenue of the Americas, LLC
Contractor SKYLINE DEVELOPERS CONSTR
Filer RETHY ASSOCIATES, INC.
Demo. of Partitions, Doors, Suspended Ceiling, Millwork, Wall & Floor Finishes, Install Partitions, Doors, Suspended Ceiling, Millwork, Wall…
M00719033 ↗20 WEST 55TH STREET
MANHATTAN
AlterationPermit Issued04/22/202204/26/2022
Design MG ENGINEERING D.P.C.
Contractor SKYLINE DEVELOPERS CONSTR
Demolition of Existing Exhaust Fan & Some Minor Ductwork, Install 2 Ton Supplemental Air Conditioning Unit, Associated Ductwork & Piping, On…
M00717897 ↗20 WEST 55TH STREET
MANHATTAN
AlterationPermit Issued04/19/202204/22/2022
Design ENV ARCHITECTS, DPC
Contractor SKYLINE DEVELOPERS CONSTR
Demolition of Partitions, Doors, Portion of Existing Ceiling, Millwork, Wall & Floor Finishes, Installation of Partitions, Doors, Sheetrock …
M00665405 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationPermit Issued01/31/202203/09/2022
Design ENV ARCHITECTS, DPC
Owner 1040 Avenue of the Americas, LLC
Contractor SKYLINE DEVELOPERS CONSTR
Filer RETHY ASSOCIATES, INC.
Installation of Partitions, Doors, Door Hardware, Suspended Ceiling, Millwork, Wall & Floor Finishes on 16th Floor. No Change To Occupancy, …
M00665424 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationPermit Issued02/04/202203/09/2022
Design MG ENGINEERING D.P.C.
Owner 1040 Avenue of the Americas, LLC
Contractor SKYLINE DEVELOPERS CONSTR
Filer RETHY ASSOCIATES, INC.
Installation of Air Conditioning Ductwork, Supply Air Diffusers, Return Air Grills, Outside Air Fan & Ductwork, Relocate (5) of (6) Existing…
M00665457 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationSigned-off02/04/202202/08/2022
Design MG ENGINEERING D.P.C.
Owner 1040 Avenue of the Americas, LLC
Contractor DEMAR PLUMBING CORP
Filer RETHY ASSOCIATES, INC.
Installation of Pantry Plumbing Fixtures, Non-Gas Water Heater, Funnel Drain, Ejector Pump, Associated Piping, Water Line For New Appliances…
M00626520 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationPermit Issued11/18/202111/22/2021
Design ENV ARCHITECTS, DPC
Contractor SKYLINE DEVELOPERS CONSTR
Installation of Partitions, Doors, Suspended Ceiling, Millwork, Wall & Floor Finishes on Part of 17th Floor. No Change to Occupancy, Use or …
M00626626 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationSigned-off11/16/202111/18/2021
Design MG ENGINEERING D.P.C.
Owner ROCK 54 LLC
Contractor DEMAR PLUMBING CORP
Filer RETHY ASSOCIATES, INC.
Replacement of Plumbing Fixtures on Existing Roughing, Non-Gas Water Heater & Associated Piping & Water Line for Replaced Appliances, Instal…
M00626581 ↗1040 AVENUE OF THE AMERICAS
MANHATTAN
AlterationPermit Issued11/16/202111/17/2021
Design MG ENGINEERING D.P.C.
Owner ROCK 54 LLC
Contractor SKYLINE DEVELOPERS CONSTR
Filer RETHY ASSOCIATES, INC.
Install Air Conditioning Ductwork and Connect to Existing Ductwork, Install Supply Air Diffusers, Return Air Ducts & Grills on Part of 17th …
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
1040 AVENUE OF THE AMERICAS ↗903/01/2026
20 WEST 55TH STREET ↗204/22/2022
▾Documents — 88 on file (BIS + DOB NOW)
▸Plans & Drawings15
▸DOB NOWPlans/Sketch15
09/03/2026M00626626-I1 · 1040 AVENUE OF THE AMERICASRequest digital key ↗
09/03/2026M00626581-I1 · 1040 AVENUE OF THE AMERICASRequest digital key ↗
09/03/2026M00626520-I1 · 1040 AVENUE OF THE AMERICASRequest digital key ↗
Showing 3 of 15 on file for this type
▸Seals & Professional Certifications58
▸DOB NOWProgress Inspector Seal & Signature28
09/30/2026M08054896-I1 · 1040 AVENUE OF THE AMERICASOpen ↗
09/30/2026M08054896-I1 · 1040 AVENUE OF THE AMERICASOpen ↗
09/02/2026M01356040-S1 · 1040 AVENUE OF THE AMERICASOpen ↗
Showing 3 of 28 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature15
09/03/2026M00626520-I1 · 1040 AVENUE OF THE AMERICASOpen ↗
09/02/2026M00665424-I1 · 1040 AVENUE OF THE AMERICASOpen ↗
09/02/2026M00717897-I1 · 20 WEST 55TH STREETOpen ↗
Showing 3 of 15 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature15
09/30/2026M08054896-I1 · 1040 AVENUE OF THE AMERICASOpen ↗
09/23/2026M01356040-S2 · 1040 AVENUE OF THE AMERICASOpen ↗
09/02/2026M01356040-S1 · 1040 AVENUE OF THE AMERICASOpen ↗
Showing 3 of 15 on file for this type
▸Environmental & Asbestos15
▸DOB NOWDEP ACP-5: Asbestos Assessment Report15
09/03/2026M00626520-I1 · 1040 AVENUE OF THE AMERICASOpen ↗
09/02/2026M00665424-I1 · 1040 AVENUE OF THE AMERICASOpen ↗
09/02/2026M00717897-I1 · 20 WEST 55TH STREETOpen ↗
Showing 3 of 15 on file for this type