View All Planning Division Documents A–Z
Architectural elevation approval is required for all Building Permit application submissions that affect the exterior of a commercial property.
This application should be used for the following requests: Change of Zone, Modification of Covenants and Restrictions, and Town Board Special Permit Process
A land clearing permit must be obtained before clearing an area exceeding two hundred (200) square feet or removing any tree larger than ten (10) inches in caliper.
View All Building Division Documents A–Z
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.
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.
A building may be partially constructed without all the interior elements necessary to complete the building; this document provides guidance on applying the NYS Uniform Code for these situations. A shell, speculative or white box building cannot be occupied or issued a CO upon completion. A separate building permit application for Interior Arrangement must be sought in order to receive a CO.
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
NY State Unified Solar Permit Application for systems with a rated DC capacity of 25 kW or less.
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
Includes fees for Commercial Building Permits and Commercial Plumbing Permits
Includes fees for Residential Building Permits and Residential Plumbing PermitsGeneral 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
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.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.
View All Engineering Division Documents A–Z
Dewatering permits are required when it is not possible to contain pumped water on site during construction activities (i.e. foundation excavation in shallow groundwater areas, swimming pool installations/liner changes, etc.), or to register residential sump pumps having permanent discharges into the street or Town of Islip drainage systems.
The attached documentation is required prior to Town Board acceptance of an easement when land is not being dedicated.
Step by step directions for filing Engineering Division applications electronically, including instructions on uploading documents.
For questions related to Engineering Division applications or inspections, please fill out the attached form and email it to This email address is being protected from spambots. You need JavaScript enabled to view it..
General guideline for applicants and contractors in understanding the inspection process for issued permits
When a dedication of land is proposed to the Town of Islip (e.g.: road widening, recharge basin, conservation area, corner radius), the attached documentation is required prior to the Town Board acceptance of the dedication.
Subdivisions of land involving the creation of a road or more than 5 lots.
Subdivisions of land involving the creation of up to 5 lots on an existing street.When a dedication is proposed to the Town of Islip for a new public road resulting from a subdivision or road opening, the attached documentation is required prior to the Town Board acceptance of the dedication.
Creation of a new road or extension of an existing road.
All commercial, industrial, institutional, and multi-family planned unit developments are required to obtain site plan approval for conformance with all Town of Islip Zoning Ordinance Standards and Land Development Regulations prior to the issuance of any permits.Effective July, 2020, Site Work Only Permits will be issued by the Engineering Division.
The Subdivision and Land Development Regulations contains helpful information regarding the Subdivision, Site Plan and Land Clearing process including design submission and improvement standards. This 2019 Amendment includes updates to the appendices. If you have any questions, please give our Engineering Division a call at 631-224-5360.
View All Zoning Board of Appeals Documents A–Z
View Master List of ALL Planning & Development Documents
Architectural elevation approval is required for all Building Permit application submissions that affect the exterior of a commercial property.
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.
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.
A building may be partially constructed without all the interior elements necessary to complete the building; this document provides guidance on applying the NYS Uniform Code for these situations. A shell, speculative or white box building cannot be occupied or issued a CO upon completion. A separate building permit application for Interior Arrangement must be sought in order to receive a CO.
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
NY State Unified Solar Permit Application for systems with a rated DC capacity of 25 kW or less.
All Construction Documents submitted to the Town of Islip must contain the note as described on this document.
This application should be used for the following requests: Change of Zone, Modification of Covenants and Restrictions, and Town Board Special Permit Process
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.
Dewatering permits are required when it is not possible to contain pumped water on site during construction activities (i.e. foundation excavation in shallow groundwater areas, swimming pool installations/liner changes, etc.), or to register residential sump pumps having permanent discharges into the street or Town of Islip drainage systems.
The attached documentation is required prior to Town Board acceptance of an easement when land is not being dedicated.
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
Step by step directions for filing Engineering Division applications electronically, including instructions on uploading documents.
For questions related to Engineering Division applications or inspections, please fill out the attached form and email it to This email address is being protected from spambots. You need JavaScript enabled to view it..
Includes fees for Commercial Building Permits and Commercial Plumbing Permits
Includes fees for Residential Building Permits and Residential Plumbing PermitsGeneral guideline for applicants and contractors in understanding the inspection process for issued permits
General guideline for applicants and contractors in understanding the inspection process for issued permits
A land clearing permit must be obtained before clearing an area exceeding two hundred (200) square feet or removing any tree larger than ten (10) inches in caliper.
When a dedication of land is proposed to the Town of Islip (e.g.: road widening, recharge basin, conservation area, corner radius), the attached documentation is required prior to the Town Board acceptance of the dedication.
Subdivisions of land involving the creation of a road or more than 5 lots.
Subdivisions of land involving the creation of up to 5 lots on an existing street.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.
When a dedication is proposed to the Town of Islip for a new public road resulting from a subdivision or road opening, the attached documentation is required prior to the Town Board acceptance of the dedication.
Creation of a new road or extension of an existing road.
FORM CAN BE FILLED IN ELECTRONICALLY.
FOR TRUSS SIGNS, PLEASE USE BUILDING PERMIT APPLICATION.
All commercial, industrial, institutional, and multi-family planned unit developments are required to obtain site plan approval for conformance with all Town of Islip Zoning Ordinance Standards and Land Development Regulations prior to the issuance of any permits.Effective July, 2020, Site Work Only Permits will be issued by the Engineering Division.
NYSBC 2020 requirements for any new building or new building addition over one story in height
The Subdivision and Land Development Regulations contains helpful information regarding the Subdivision, Site Plan and Land Clearing process including design submission and improvement standards. This 2019 Amendment includes updates to the appendices. If you have any questions, please give our Engineering Division a call at 631-224-5360.
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.Download the Town of Islip Comprehensive Plan Update Module number CP2011-01.
This document contains new demographic and other data updates which will form the basis for future planning recommendations for Islip.
If you have any questions, please call the Department of Planning at 631-224-5450.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.
Instructions on how to vavigate the Zoning Viewer.