How to Submit Development Applications

The Middlesex County Office of Planning is pleased to announce the launch of an electronic development review system, ePlan. This system will replace the submission and review of paper and electronic (e.g., CDs, thumb drives) site plan and subdivision applications.

All new, addendum and resubmission application forms must be submitted though the ePlan portal. For the link to the ePlan portal, click here.

Additional Development Review Application Forms

• Submission of Performance Guarantee Application Form
• Release of Performance Guarantee Application Form
• Field Change Application Form
• Appeal Application Form

Please note: An addendum application is to make corrections to a previously submitted ePlan site plan or subdivision application form. A resubmission application form is an application to submit revised plans to satisfy the conditions of the Development Review Committee (DRC). Applicants will have the ability to pay the one-time 33% resubmission fee electronically.

If you experience any issues while utilizing the County’s electronic submission system, ePlan, please email our office at eplan@co.middlesex.nj.us with a clear description of the steps that you took resulting in the issue and a screenshot showing any error message that is being displayed. Our office will respond to you within 1-2 business days. For more immediate assistance, you can call our office at 732-745-3812

Required Documents for all ePlan Applications

Prescreen Review Requirements

• Property Authorization Form (if applicant is not the owner)
• Fee Schedule
• Ownership Disclosure Form for LLC, Partnership, and Corporations

Completeness Review Requirements

• Site Plan Checklist
• Minor Subdivision Checklist
• Preliminary Major Subdivision Checklist
• Final Major Subdivision Checklist
• Site Development Stormwater Plan Checklist
• Site Development Stormwater Plan - Applicability Criteria

Guidance Documents

• Middlesex County Land Survey Requirements
• Preparation of a Traffic Impact Report or Statement
• 2026 Deadlines for Development Review Applications
• Description of Development Review Letters
• Signed and Sealed Policy - Guidance Document

Please be advised that an application must meet both prescreen and completeness requirements to be scheduled for a monthly Development Review Committee meeting.  

Middlesex County Land Development Standards

• Chapter X Land Subdivision Resolution
• Chapter XI Site Plan Review Resolution
• Chapter 400 - Drainage & Stormwater Management Standards

Adopted Middlesex County Planning Board Policies

• Resolution 2023-08 - Stormwater Maintenance Agreements - Non-County Road Applications
• Resolution 2024-09 - Stormwater Maintenance Agreements - County Road Applications
• Resolution 2024-10 - Extension Policy
• Resolution 2025-05 - Force Main Policy

Resources for ePlan Users

ePlan Quick Guide
ePlan Users Guide for Applicants
Creating an ePlan Account (video)

About Development Reviews

The Middlesex County Office of Planning is responsible for reviewing all development proposals (i.e., subdivision and site plan applications) to determine whether County roads/property and/or drainage facilities would be adversely affected. The Office of Planning serves as staff to the Planning Board’s Development Review Committee. Reviews are carried out for a fee, in accordance with the County Subdivision and Site Plan Resolutions which are adopted by the Board of County Commissioners and in accordance with the New Jersey County Enabling Act. The Site Plan and Subdivision Resolutions enable the County to assess developers for contributions for downstream drainage improvements and require developers to install and bond for required improvements to County Roads and facilities. The County’s objective is to reduce hazards to the general public caused by unsafe traffic conditions and/or flooding. Public inquiries regarding application procedures and/or development activity may be directed to 732-745-3812 or ePlan@co.middlesex.nj.us.

Middlesex County Standards

Standard Details and ADA Checklist

Culvert and Bridge Standards

Standards and Requirements for Developer Designed Modified and Constructed Traffic Signal

Forms, Documents, and Reports