What building codes apply in Delaware?

Delaware has adopted 9 active building codes, including editions of the Delaware Electrical Code, State of Delaware Plumbing Code, Delaware State Fire Prevention Regulations. Use the list above to verify the specific year and edition for your project.

Yes, Delaware is a Home Rule jurisdiction. This means building code adoption and enforcement are primarily managed at the local level (city or county) rather than by a single state agency.

Most states, including Delaware, review and adopt new building code editions every 3 to 6 years, typically following the triennial publication cycles of the ICC and NFPA.

Delaware's current building code adoption is based on the 2023 edition cycle. Check the code cards above for specific edition years for each code type (IBC, IRC, IFC, etc.).

Delaware allows local jurisdictions to adopt their own amendments. The amendment type for each code is indicated by the badge (As Is, State Amended, or State Edition) on each code card above.

Permit requirements in Delaware depend on the locally adopted building codes shown above. Contact your local building department for specific permit thresholds and submittal requirements. The code edition in effect on your permit application date determines which requirements apply to your project.