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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 Generator Permit Application and Requirements – COMMERCIAL Popular

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Generator Permit Application and Requirements - COMMERCIAL 2024-04-25.pdf

Generator Permit Application and Requirements – COMMERCIAL
Separate Plumbing and Fire Prevention permits may be required. For ground mounted generators, an approved Site Plan is also required.

pdf Generator Permit Application and Requirements – RESIDENTIAL Popular

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Generator Permit Application and Requirements - RESIDENTIAL 2024-04-25.pdf

Generator Permit Application and Requirements – RESIDENTIAL
Separate Plumbing and Fire Prevention permits may be required.

pdf Geographic Table Design Requirements for Residential and Commercial 2020 Popular

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Geographic Table Design Requirements for Residential and Commercial 2020 -- 2020-07-01.pdf

pdf Inspection Process – Building & Plumbing Popular

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Building_and_Plumbing_Inspection_Process_Handout_2022-08-18.pdf

Inspection Process – Building & Plumbing

General guideline for applicants and contractors in understanding the inspection process for issued permits

pdf Letter of Use (Letter of Intent) Form Popular

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Building Permit COMMERCIAL Requirements - Letter of Use (Letter of Intent) Form 2024-05-30.pdf

Letter of Use (Letter of Intent) Form
All commercial permit applications require a letter of use to describe the proposed business operations and how the Use complies with the NYS Uniform Code and TOI Zoning Code. This form must be completed in its entirety.

pdf Pool, Hot Tub, Spa Permit Application and Requirements Popular

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Pool_Hot_Tub_Permit_Application_and_Requirements-2022-10-27.pdf

Pool, Hot Tub, Spa Permit Application and Requirements

Please review the application form in its entirety for important information about what additional permits may be required, along with a CO Checklist.

pdf Pool/Hot Tub/Spa Barriers and Alarms Popular

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Pool, Spa and Hot Tub Barrier and Alarm Requirements NYS Code 2020 -- 2020-05-18 PDF.pdf

Pool/Hot Tub/Spa Barriers and Alarms

2020 Residential Code of New York State detailing code requirements including barriers (fencing) and alarms.

pdf RDP Instruction and Compliance Forms for New Commercial Buildings and Additions Popular

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RDP Instruction and Compliance Forms for New Commercial Buildings and Additions 2020-07-21.pdf

RDP Instruction and Compliance Forms for New Commercial Buildings and Additions

This packet provides guidance to Registered Design Professionals for preparing a NYS Code compliant submission, including a summary, Structural Design Affidavit, NYS Building Code Evaluation Summary (TOIBES), Attachment 1 and 2.

pdf Sign Permit Application Popular

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Sign_Permit_Application_Revised_06112018.pdf

Sign Permit Application

FORM CAN BE FILLED IN ELECTRONICALLY.

FOR TRUSS SIGNS, PLEASE USE BUILDING PERMIT APPLICATION.

pdf STRUCTURAL REQUIREMENTS FOR WOOD FRAMED AND COLD-FORMED STEEL FRAMED BUILDING CONSTRUCTION DOCUMENTS 2020 Popular

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Structural Requirements for Wood Framed and Cold-Formed Steel Framed Building Construction Documents 2020-07-15.pdf

STRUCTURAL REQUIREMENTS FOR WOOD FRAMED AND COLD-FORMED STEEL FRAMED BUILDING CONSTRUCTION DOCUMENTS 2020

NYSBC 2020 requirements for any new building or new building addition over one story in height

pdf Temporary Trailer and Portable Storage Unit Permit Application Popular

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Temporary Trailer and Portable Storage Unit Permit Application 2019-04-09.pdf



Application for temporary trailer and temporary storage: Commercial Uses – construction trailer, office trailer, temporary storage trailer, and Residential Uses - temporary residential trailer or portable storage units.

pdf Type I and Type II Kitchen Hood Submittal Checklist 2020 Popular

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2020 Type I and II Kitchen Hood Submittal Checklist 2020-07-10.pdf

Type I and Type II Kitchen Hood Submittal Checklist 2020

Required for any commercial kitchen hood application.

pdf When is a Permit Required? Popular

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When-is-a-Permit-Required_2022-09-02.pdf

When is a Permit Required?

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

pdf Wind Turbine Permit Requirements Popular

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Wind Turbine Permit Requirements 2020-02-25.pdf

pdf Workers Compensation and Disability Requirements Popular

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Workers_Compensation_and_Disability_Requirements.pdf

Workers Compensation and Disability Requirements

INSURANCE REQUIREMENTS: Workers Compensation and Disability Requirements.  NOTE: See separate form for Plumbing/HVAC Insurance permit requirements.

pdf Zoning Frequently Asked Questions Popular

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Zoning Frequently Asked Questions 2021-04-16 (00000003).pdf