Do NOT use this application for: Certificate of Compliance, Demolition, Elevator, Equine, Portable Storage Units, Pools/Hot Tubs, Plumbing/HVAC, Signs (other than Truss) or Temporary Trailers. 

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.

Required for structures built 4+ years ago.

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.

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

General guideline for applicatns 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.

Before an application is accepted by the Building Department, the requirements in this checklist must be met.

Download the Town's most recent annual MS4 Compliance Report to the New York State Department of Environmental Conservation. This report shows the Town's progress in meeting federal and state stormwater management requirements in accordance with the Town’s State Pollutant Discharge Elimination System permit and Clean Water Act.  Public comments will be accepted through May 31, 2018 and can be sent to This email address is being protected from spambots. You need JavaScript enabled to view it..  For more information please contact the Planning Department.”

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

2017 Uniform Code Supplement detailing code requirements for barriers (fencing) and alarms.

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

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.

The Department of Planning is pleased to offer the latest version of the Subdivision and Land Development Regulations on the website. This document contains helpful information regarding the Subdivision, Site Plan Review, and Land Clearing process. The document also contains the design submission and improvement standards required by the Engineering Division. The most recent version of these regulations was adopted by the Town Board in 2007. Updates include new requirements for Stormwater Pollution Prevention Plans as mandated by the New York State Department of Environmental Conservation. PLEASE NOTE THAT SOME OF THE APPLICATION FORMS INCLUDED IN THIS BOOK HAVE BEEN MODIFIED AND ARE SUPERCEDED BY THE NEWER FORMS DEPLOYED ON THIS PAGE. If you have any questions, please give our Engineering Division a call at 631-224-5360.

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.

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