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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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Folder Building Division - Permits Section

pdf Zoning Frequently Asked Questions Popular

FAQ’s Coming Soon! In the meantime, please complete a Zoning Inquiry Form and we will be happy to assist you.

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

RDP to complete this checklist to ensure the plans contain the minimum NYS and TOI requirements prior to application submission. This completed checklist must accompany the permit application.

pdf Building Permit Requirements - Site Work Only Permit Popular

Please Note: Site Plan Approval is required before a Site Work Only Permit Application can be considered.

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

RDP to complete this checklist to ensure the plans contain the minimum NYS and TOI requirements prior to application submission. This completed checklist must accompany the permit application.

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

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.