Construction & Development

construction & development

The City of Wilmington requires permits for the following:

  • New structures
  • Changes to existing structures, including demolition
  • Repairs, including electrical, plumbing, and mechanical work

This page details all requirements that apply within the City of Wilmington.




The Development Review Process Step-by-Step Guide summarizes the key steps to obtaining all permits and approvals needed to construct, improve, or demolish a building in conformance with local and state policies and regulations. The project applicant pays for the costs of this review process through permit and inspection fees, a list of which is included at the end of the Step-by-Step Guide.




Zoning Review

Building Review

Demolition Review

Public Works Review

Planning Review

Fire Protection Review





Zoning Code (Chapter 48)

Zoning Map


Building and Construction

2012 ICC Codes Adopted and Amendments

Sub. No. 2 to Ordinance No. 13-034

Existing Building Rehabilitation Code (Chapter 4, Section 4-191)

Sediment and Stormwater Management (Chapter 11, Section 11-36)

Streets, Sidewalks and Other Public Places (Chapter 42)

Utilities (Chapter 45)


Fire Prevention

Fire Prevention and Protection (Chapter 12)

Current Delaware State Fire Prevention Regulations (adopted March 11, 2016)


Code Interpretations

These short documents are designed to provide guidance to applicants. Each interpretation document answers a specific question in an effort to offer clarity. These interpretations serve as professional commentary to the adopted City of Wilmington codes and accepted practices. Please bear in mind that each project is unique and may include elements that make the guidelines presented here inapplicable. The City Code is the primary authority, and in case of any inconsistency between these code interpretation summaries and either the Code or regulations enacted under the Code, the Code should be followed.