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A Message from the Supervisor

“Welcome to Islip, the 3rd largest town in New York State, but with an endearing small town feel. We are so proud of our town…our beaches, golf courses, marinas, parks, housing opportunities for all, businesses, industrial parks, healthcare and educational institutions including our own Islip MacArthur Airport that provides many job opportunities. I sincerely hope you find this website helpful.” — Angie

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pdf Building Permit Application Popular

This is a fillable form.
Not to be used for the following permit types: Certificate of Compliance, Demolition, Elevator, Equine, PODS/Portable Storage, Pools, Plumbing/HVAC, Signs, Site Work Only (Engineering application), Solar (25KW or less), Temporary Trailers, Truss Signs.

pdf Building Permit Requirements - Commercial Plan Intake Checklist New Building Popular

This checklist is for commercial permit applications that must be reviewed under the BCNYS (new buildings, additions, applications to complete a shell building [interior arrangement], etc.) The checklist must be completed by the Registered Design Professional. Applications will not be accepted for intake until the minimum requirements are provided, as indicated on this checklist and the applicable building permits requirements form.

pdf Building Permit Requirements - Commercial Plan Intake Checklist Existing Building Popular

This checklist is for commercial permit applications that must be reviewed under the EBCNYS (i.e. alterations, change of occupancy, etc.) The checklist must be completed by the Registered Design Professional. Applications will not be accepted for intake until the minimum requirements are provided, as indicated on this checklist and the applicable building permits requirements form.

pdf Building Plan Review Note Popular

All Construction Documents submitted to the Town of Islip must contain the note as described on this document.

pdf Building Permit - Electronic Submittal Process Popular

Step by step directions for filing applications electronically, including instructions on uploading documents

pdf Building Permit Requirements - Residential Plan Intake Checklist Popular

This is a fillable form.
The Registered Design Professional must complete this checklist and submit with the application to ensure the plans contain the minimum New York State and Town of Islip code requirements for review.

pdf When is a Permit Required? Popular

These guidelines can help you determine if your project requires a permit.