Nebraska radon requirements for new construction
What your permit set must show
- Passive radon mitigation rough-in required in all new residential construction statewide.
- Requirement extends to original commercial structures, not just residential.
- Sub-slab depressurization rough-in including vent pipe and gas-permeable layer.
- Active fan not required at construction; added post-occupancy if testing warrants.
Common questions
Does Nebraska require radon rough-ins in commercial buildings?
Yes. Nebraska's radon requirements for new construction apply to both residential dwellings and original commercial structures. This broader commercial scope is notable compared to most other states, which limit their mandates to residential construction.
Does every new Nebraska home need a passive system?
Yes. Nebraska has required a passive radon mitigation system in all new residential construction statewide for years. There are no county-level exemptions under the state requirement. Confirm the applicable code edition with your local building department.
Is a powered fan required at construction?
No. A passive rough-in is required at the time of construction. A powered fan is a post-occupancy addition installed if radon testing shows levels that exceed the action level.
What does the plans examiner look for?
Plan reviewers check that the foundation drawings show the sub-slab depressurization rough-in, including the vent pipe size, routing, and exterior termination. For commercial projects, the same review applies to the ground-floor slab detail.
Get this handled for your next permit
Upload your plans and get back permit-ready radon detail sheets, routing, and citations for Nebraska in 2 to 3 business days.
Or take the free Nebraska checklist
The same items plans examiners flag, in order. Free, no sign-up required.