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.

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.

This application must accompany any residential building permit application that employs truss construction, pre-engineered wood construction and/or timber construction.

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

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.

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.

Building permit applications must be submitted online. Please follow these step-by-step instructions for filing your application.

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

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

A Compliance Permit Application should be used in lieu of a Building Permit Application when a) the structure was built more than 4 years ago without a permit, and/or b) when the building permit exceeds its allowable renewals.

A Compliance Permit Application should be used in lieu of a Building Permit Application when a) the structure was built more than 4 years ago without a permit, b) when the building permit exceeds its allowable renewals, and/or c) when an accessory apartment is built without a permit, regardless of age.

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

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

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

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

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

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.

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 Zoning Inquiry 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.