Relating to radon mitigation in residential buildings

Sponsored by the House State Government Committee, Rep. Hans C. Wilz (R)

Topics:Environment & natural resources State government

Same legislation: HF 82

Write your legislators about itWhat changed before it passed

Official bill page Lobbyist declarations One-pager to print

Where it is now

Done: IntroducedJanuary 16, 2025
Done: SubcommitteeJanuary 23, 2025
Done: House committeeJanuary 29, 2025
Done: Passes the HouseMarch 12, 202687–4
Done: Senate committeeMarch 19, 2026
Done: Passes the SenateApril 29, 202646–0
Done: To the GovernorMay 13, 2026
Done: Signed into lawMay 19, 2026

Signed into law What’s a funnel?

What’s in it

AI summary New homes built for one or two families will be required to include a built-in way to reduce radon levels. This rule will apply to any new construction that starts after the state building code is updated.¹

Read the official explanation

This bill relates to radon mitigation requirements. The bill requires the state building code commissioner to adopt as part of the state building code a requirement that new single-family or two-family residential construction include a passive method for the mitigation of radon listed in appendix AF of the international residential code, 2021 edition, published by the international code council. The requirement shall apply only to single-family or two-family residential construction commenced after the adoption of the requirement.

Changed since by amendment S-5114; see Amendments.

Full bill text · What changed before it passed²

Senate subcommittee

Named March 17, 2026. On March 17, 2026 it recommended passage.

Three legislators hear a bill first and recommend what the committee should do; it’s the best time to weigh in. How to take part

1 written public comment to its subcommittee: March 17, 2026 (1) · on the Legislature’s site

Iowa Code it changes

Creates§103A.8E

How the Code works³

Lobbying

15 for · 0 against · 18 undecided · Who →

Family tree

Tried before

HF 2491Passed a chamber90th GA HF 2170Renumbered90th GA

91st General Assembly

HF 82Renumbered HF 2297Became lawfrom HF 82

Earlier and later bills are matched by wording or an identical title.

Tried before

This idea has been filed in an earlier General Assembly. None became law, though one got through a chamber.

HF 2170 Relating to radon mitigation in residential buildings
90th General Assembly · Renumbered as HF 2491 · same title
Cleared committee
HF 2491 Relating to radon mitigation in residential buildings
90th General Assembly · Passed House · same title
Passed a chamber

Matched by wording or an identical title.