---
type: "Bill"
title: "A bill for an act relating to radon mitigation in residential buildings."
description: "A bill for an act relating to radon mitigation in residential buildings."
jurisdiction: "us/states/ia"
legislature: "Iowa General Assembly"
session: "2025-2026"
identifier: "HF 2297"
citation: "Iowa HF 2297 (2025-2026)"
classification: ["bill"]
subjects: ["building codes", "buildings", "radon", "radon testing"]
status: "enacted"
primary_sponsors: []
version_count: 6
action_count: 24
vote_count: 1
first_action: "2026-02-05"
last_action: "2026-05-19"
source: "openstates"
source_identifier: "ocd-bill/8e150750-9e80-43ac-9369-f16d39b31410"
source_url: "https://www.legis.iowa.gov/legislation/billTracking/billHistory?billName=HF 2297&ga=91"
source_hash: "af87de4105e04266d06dadb7e524f28443f382f9b237df9ff7237b954b55d0f2"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ia"]
---

# Iowa HF 2297 (2025-2026) — A bill for an act relating to radon mitigation in residential buildings.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Introduced** (filed) — [source](https://www.legis.iowa.gov/docs/publications/LGI/91/attachments/HF2297.html)
2. **Amendment H-8431** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/91/H8431.pdf)
3. **Amendment S-5114** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/91/S5114.pdf)
4. **Enrolled with Governor's Action** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/LGEG/91/attachments/HF2297.html)
5. **Signed Enrolled Bill (PDF)** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/LGE/91/Attachments/HF2297_GovLetter.pdf)
6. **Enrolled** (enrolled) — [source](https://www.legis.iowa.gov/docs/publications/LGE/91/attachments/HF2297.html)

## Votes

- Shall the bill pass? — **46–0** (pass) · upper

## Sponsors

- COMMITTEE ON STATE GOVERNMENT — primary (organization)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2026-02-05** Introduced, placed on calendar. `introduction`
- **2026-03-12** Passed House, yeas 87, nays 4. `passage`
- **2026-03-12** Immediate message.
- **2026-03-16** Message from House.
- **2026-03-16** Read first time, referred to State Government. `reading-1`
- **2026-03-16** Subcommittee Meeting: 03/17/2026 10:30AM Room 315.
- **2026-03-17** Subcommittee: Webster, Rozenboom, and Staed.
- **2026-03-17** Subcommittee recommends passage. `committee-passage-favorable`
- **2026-03-19** Committee report, recommending amendment and passage. `committee-passage`
- **2026-03-19** Amendment S-5114 filed. `amendment-introduction`
- **2026-03-19** Placed on calendar.
- **2026-03-26** Placed on calendar under unfinished business.
- **2026-04-29** Amendment S-5114 adopted. `amendment-passage`
- **2026-04-29** Passed Senate, yeas 46, nays 0. `passage`
- **2026-04-29** Immediate message.
- **2026-04-29** Message from Senate.
- **2026-04-29** Senate amendment H-8431 filed. `amendment-introduction`
- **2026-04-30** House concurred in Senate amendment H-8431.
- **2026-04-30** Passed House, yeas 81, nays 3. `passage`
- **2026-05-01** Explanation of vote.
- **2026-04-30** Immediate message.
- **2026-04-30** Message from House.
- **2026-05-13** Reported correctly enrolled, signed by Speaker and President, and sent to Governor.
- **2026-05-19** Signed by Governor. `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/8e150750-9e80-43ac-9369-f16d39b31410`. Confidence: reported (aggregated from official Iowa legislature records).