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

Planning Document Search

Engineering Contact


Ron Meyer

Town Hall
Engineering Division

655 Main Street
Islip, NY 11751


(631) 224-5365

Front Counter Hours

M-F 8:00am - 4:00pm

The Division of Engineering and Contracts administers the processing of site plan applications, assuring that site plans conform to our Town Zoning Regulations and Subdivision and Land Development Regulations as well as State and County Regulations. In addition, this Division manages contracts for Grant and Capital Improvement Projects, demolition and board-up/clean-up resolutions, and other land and waterfront construction projects.

View Town of Islip Zoning Map


Zoning is a tool that municipalities use to regulate the use and development of properties. This link will take you to the Town of Islip Zoning Map, where you can see the underlying zoning of a property and the regulations associated with that zone. All information presented on this site is subject to verification by the departments or agencies responsible for producing, entering, and updating that data for the Town of Islip.

Popular Engineering Division Forms & Applications

View All Engineering Division Documents A–Z

  • pdf De-watering Permit Application

    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.

  • pdf Land Dedication Checklist

    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.

  • pdf Major Subdivision Application

    Subdivisions of land involving the creation of a road or more than 5 lots.

  • pdf Minor Subdivision Application

    Subdivisions of land involving the creation of up to 5 lots on an existing street.

  • pdf Road Dedication Checklist

    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.

  • pdf Road Opening Application

    Creation of a new road or extension of an existing road.

  • pdf Site Plan 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.

  • pdf Subdivision and Land Development Regulations

    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.


Planning & Development Department Divisions
Planning Division: (631) 224-5450
Building Division: Permits: (631) 224-5466 Building Division: Records: (631) 224-5470
Engineering Division: (631) 224-5360
Zoning Board of Appeals: (631) 224-5489
Economic Development: (631) 224-5512