Which building code applies to your permit

Pick a state and, if you want, a city or county, then a permit date. You get the building, residential, energy, electrical, plumbing, mechanical and fire code editions in force on that date, with the official source for each. No signup.

DE — statewide

Editions in force for a permit dated 2026-10-22.

Building code2018
Not yet confirmed on an official source
Residential code2018
Not yet confirmed on an official source
Existing building codeNo statewide edition
No statewide edition
Energy code2024
Not yet confirmed on an official sourceEffective 2026-04-11Official source
Electrical code2023
Not yet confirmed on an official sourceEffective 2026-01-01Official source

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