IowaIowa directs passive radon methods for newly built homes
Iowa law directs the commissioner to add a passive radon method requirement to the building code for new one- and two-family homes.
What it does
Iowa law directs the building code to require a passive radon method in new one- and two-family homes. It applies only to construction that starts after the state adopts the requirement.
Argument forA built-in passive radon method could help reduce radon exposure for people who later live in covered homes.
Argument againstBuilders may need to add work and cost because covered homes must include a passive method to reduce radon.
More detail
The commissioner must add a passive radon mitigation requirement to Iowa’s building code. The requirement covers new single-family and two-family residential construction in Iowa. The required method must be listed in Appendix AF of the 2021 International Residential Code. The requirement applies to covered construction that starts after the commissioner adopts it as part of the state building code.
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Where it stands
- Introduced
- Passed 1st Chamber
- Passed 2nd Chamber
- To Governor
- Became Law
Looking ahead
No hearings or votes scheduled.
History
- 2026
- May 19Signed by Governor Kim Reynolds.Became Law
- May 13Reported correctly enrolled, signed by Speaker and President, and sent to Governor.To Governor
- May 1Explanation of vote.
- Apr 30Message from House.
- Vote recorded Shall the bill pass? Result: pass.Lower
- Apr 30Immediate message.
- Apr 30Passed House, yeas 81, nays 3.Major
- Apr 30House concurred in Senate amendment H-8431.
- Apr 29Senate amendment H-8431 filed.Minor
- Vote recorded Shall the bill pass? Result: pass.Upper
- Apr 29Message from Senate.
- Apr 29Immediate message.
- Apr 29Passed Senate, yeas 46, nays 0.Passed 2nd Chamber
- Apr 29Amendment S-5114 adopted.Major
- Mar 26Placed on calendar under unfinished business.
- Mar 19Placed on calendar.
- Mar 19Amendment S-5114 filed.Minor
- Mar 19Committee report, recommending amendment and passage.Minor
- Mar 17Subcommittee recommends passage.Minor
- Mar 17Subcommittee: Webster, Rozenboom, and Staed.
- Mar 16Subcommittee Meeting: 03/17/2026 10:30AM Room 315.
- Mar 16Read first time, referred to State Government.Minor
- Mar 16Message from House.
- Mar 12Immediate message.
- Vote recorded Shall the bill pass? Result: pass.Lower
- Mar 12Passed House, yeas 87, nays 4.Passed 1st Chamber
- Feb 5Introduced, placed on calendar.Introduced
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