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

This application is to be used for the demolition to a structure only. For interior demolitions (leaving the structure in tact), please use the Building Permit Application form as this would be considered an Interior Alteration to Vacant Space.

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.

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.

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.

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

This is a fillable form. Handwritten applications will not be accepted

NY State Unified Solar Permit Application for systems with a rated DC capacity of 25 kW or less.

NY State Unified Solar Permit Application Submittal Requirements for systems with a rated DC capacity of 25 kW or less.

Must be completed and certified by the design professional or third party inspection agency after installation.

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

Certificate of Compliance applications should be used in lieu of a building permit application if the structure was built more than 4 years ago.

Electrical Inspection Certificates (aka Electrical Certificates) must be obtained from any one of the qualified agencies on this list.(Electrical Contractors - In order to get on the list of qualified agencies, please refer to the Electrical Inspection Agency Qualification Requirements form.)

Requirements for companies interested in becoming qualified to perform electrical inspections in the Town of Islip

Residential Generators require a Plumbing Permit; no separate Building Permit is required.

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

Pool Safely - Guidance For Safety - The Pool and Spa Safety Act

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

Requirements needed to obtain a CO/CC on your pool.

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.

FORM CAN BE FILLED IN ELECTRONICALLY.

FOR TRUSS SIGNS, PLEASE USE BUILDING PERMIT APPLICATION.

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

This form should be completed by the applicant and submitted to the Town with a Building Permit Application for a Truss Sign.

Required for any commercial kitchen hood application.

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

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

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

If you have questions regarding how a property can be developed or need a Zoning Denial in order to appear before the Zoning Board of Appeals (ZBA), please fill out this form (it can be filled out electronically) and email it to This email address is being protected from spambots. You need JavaScript enabled to view it.. You will receive a response from the Zoning Department either by phone or email, typically within 3 business days.