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Home / Delaware Permits / Wilmington

Building Permits in Wilmington, Delaware

City in New Castle County
Local details being verified — statewide baseline shown

Adopted Construction Codes

These are the state-level code editions for Delaware. They apply in Wilmingtonunless a verified local adoption or amendment is noted — in local-adoption states, confirm the city or county's own code editions with the building department.

CodeEditionAdoption
IECC — International Energy Conservation Code201816 Del. C. 7602 (residential energy, statewide) · source ↗
NEC — National Electrical Code (NFPA 70)20232026 Delaware State Fire Prevention Regulations · source ↗
NFPA 101 — 20242026 Delaware State Fire Prevention Regulations, eff. 1/1/2026 · source ↗

Permit Requirements

Permit-type details for Wilmington (fees, required documents, inspection sequence) are being verified with the local building department. In the meantime, contact the city building department directly, or ask the BuildSpec Copilot about statewide requirements.

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