Nebraska Building Code: Which Editions Are Adopted

Direct answer

2018 Nebraska state building code and 2018 IECC Nebraska Energy Code; localities adopt the state code or one that conforms to it in Nebraska. 2018 IBC, 2018 IRC, 2018 IEBC and the 2018 Uniform Plumbing Code adopted by reference in statute (Neb. Rev. Stat. 71-6403), with the 2018 IECC adopted as the Nebraska Energy Code (Neb. Rev. Stat. 81-1611). Bills to move the energy provisions to the 2021 IECC (LB 611, 2025) and the 2024 IECC (LB 800, 2026) did not pass, so the 2018 editions remain in force. Record the permit application date with it: a code change normally applies from an effective date, and an application filed before that date is usually reviewed under the previous edition. This was checked on 2026-10-01 against Nebraska Legislature (Neb. Rev. Stat. 71-6403, 71-6406 and 81-1611), which is the source that controls. The cross-state comparison further down this page comes from the ICC adoption chart dated January 2024, so where the two disagree the record above is the newer one.

Content and cited inputs reviewed by Harth team · Published 2026-09-07 · Updated 2026-10-01.

Which codes has Nebraska adopted now?

2018 Nebraska state building code and 2018 IECC Nebraska Energy Code; localities adopt the state code or one that conforms to it.

2018 IBC, 2018 IRC, 2018 IEBC and the 2018 Uniform Plumbing Code adopted by reference in statute (Neb. Rev. Stat. 71-6403), with the 2018 IECC adopted as the Nebraska Energy Code (Neb. Rev. Stat. 81-1611).

Transition: Bills to move the energy provisions to the 2021 IECC (LB 611, 2025) and the 2024 IECC (LB 800, 2026) did not pass, so the 2018 editions remain in force.

Local adoption: A county, city or village may enforce its own building code only if it adopts the state building code or a code that conforms generally with it; a local code may not use an older edition. If a locality adopts nothing within two years of a state update, the state building code applies there, except for construction on a farm. Local energy codes must be at least as stringent as the Nebraska Energy Code.

Checked 2026-10-01 against Nebraska Legislature (Neb. Rev. Stat. 71-6403, 71-6406 and 81-1611). Confirm the edition and effective date for the specific permit jurisdiction before relying on it.

The cross-state record

For comparison across states, every I-Code the ICC Master I-Code Adoption Chart (January 2024) tracks, as it records Nebraska. Where this disagrees with the record above, the record above is newer:

Nebraska has a recorded edition year for 5 of the 17 codes: 2018 for the building, residential, residential energy, commercial energy and existing buildings codes. The fire, mechanical, plumbing, private sewage, fuel gas, property maintenance, wildland-urban interface and zoning codes appear as adopted by individual state or local agencies rather than as a statewide standard, so whether they apply depends on the permit jurisdiction for the project address. No adoption at all is recorded for the green construction, swimming pool and spa, performance and green building standard codes.

Source: ICC Master I-Code Adoption Chart (January 2024).

How Nebraska compares with its neighbours

Statewide editions in force, checked 2026-10-01; “Local” means no state adoption, “(limited)” a state adoption for some buildings only, and * a state-titled code built on that edition.

Iowa, Kansas, Colorado and South Dakota differ from Nebraska on the building code alone. A practice working across that border is working to two editions, whatever the office standard says.

Where Nebraska sits in the national record

Of the 50 states and the District of Columbia, 3 enforce the 2018 IBC statewide, 27 a later edition, 4 an earlier one, and 17 have no statewide IBC edition in force. Nebraska is therefore behind most of the country on the building code, which matters for anyone carrying a detail or a code-analysis sheet in from a neighbouring state.

Across all 17 codes the January 2024 ICC chart tracks, Nebraska has a recorded edition for 5, which ranked it 36th of 51. A low count is not a gap in regulation — it usually means the state legislates through its own documents, or leaves the discipline to local adoption.

What the chart does and does not tell you

The chart's own legend matters more than the numbers:

• An edition year means one or more state or local agencies adopted that edition. It does not mean every building in the state is designed to it.
• “Some jurisdictions only” is the chart's X: the code is in use somewhere in the state but is not the standard for all buildings.
• “Not adopted” is a blank cell — no state or local jurisdiction reported adopting that code.
• “State-written code” means the state publishes its own document in place of the model edition, so the model text is a reference, not the law.

ICC states plainly that not every jurisdiction notifies it of an adoption, and this chart is dated January 2024. Treat it as the starting point for a search, never as the answer.

How to confirm the edition that governs a Nebraska project

1. Open Nebraska Legislature (Neb. Rev. Stat. 71-6403, 71-6406 and 81-1611) and find the currently adopted code list with its effective date.
2. Check whether the permit authority for the project address is the state or a local programme with its own adoption.
3. Read the state amendments alongside the model edition — an amended table or definition changes the requirement even when the edition matches.
4. Record the permit application date. A code change usually applies from an effective date, and applications filed before it are normally reviewed under the previous edition.
5. Get the answer in writing from the authority having jurisdiction before it drives a design decision.

Nebraska code-basis worksheet

Fill this in once per project and keep it with the drawing set. Every row is a question a plan reviewer can ask, and the answer changes with the address and the application date, not with the state.

This worksheet records a determination; it does not make one. The authority having jurisdiction decides which edition and which amendments apply.

Where can you explore related guidance?

• Explore all code adoption guidance
• Iowa Building Code: Which Editions Are Adopted
• Kansas Building Code: Which Editions Are Adopted
• Colorado Building Code: Which Editions Are Adopted
• South Dakota Building Code: Which Editions Are Adopted

Sources and method

Adopted editions transcribed from the ICC Master I-Code Adoption Chart (January 2024), reproduced with the chart's own legend so an “X” is not mistaken for a statewide adoption. ICC notes that not all jurisdictions report their adoptions and publishes updates at iccsafe.org/adoptions. The current edition, its effective date and the state amendments are published by Nebraska Legislature (Neb. Rev. Stat. 71-6403, 71-6406 and 81-1611), which controls.

Source links

• iccsafe.org

• iccsafe.org

• nebraskalegislature.gov