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HF2297 • 2026

A bill for an act relating to radon mitigation in residential buildings. (Formerly HF 82 .) Effective date: 07/01/2026.

A bill for an act relating to radon mitigation in residential buildings. (Formerly HF 82 .) Effective date: 07/01/2026.

Enacted

This bill passed the Legislature and reached final enactment based on the latest official action.

Sponsor
COMMITTEE ON STATE GOVERNMENT
Last action
2026-05-19
Official status
Signed by Governor . H.J. 05/19 .
Effective date
Not listed

Plain English Breakdown

The official source material does not provide specific details on enforcement or consequences for non-compliance with the radon mitigation requirements.

Radon Mitigation in New Homes

This law requires new single-family and two-family homes to include a passive radon mitigation system.

What This Bill Does

  • Requires the state building commissioner to add rules about radon mitigation to the state's building code for new homes.
  • Specifies that new single-family and two-family residential construction must use a passive method of radon mitigation listed in appendix AF of the International Residential Code, 2021 edition.

Who It Names or Affects

  • Home builders who construct new single-family or two-family houses
  • People buying or building a new house

Terms To Know

Radon mitigation
Steps taken to reduce radon levels in buildings.
State building code
Rules that set standards for how buildings are constructed and maintained.

Limits and Unknowns

  • The law only applies to new homes, not existing ones.
  • It does not specify what happens if a builder fails to follow the radon mitigation rules.

Bill History

  1. 2026-05-19 Iowa Legislature

    Signed by Governor . H.J. 05/19 .

  2. 2026-05-13 Iowa Legislature

    Reported correctly enrolled, signed by Speaker and President, and sent to Governor. H.J. 05/13 .

  3. 2026-05-01 Iowa Legislature

    Explanation of vote. H.J. 1083 .

  4. 2026-04-30 Iowa Legislature

    Message from House. S.J. 936 .

  5. 2026-04-30 Iowa Legislature

    Immediate message. H.J. 1060 .

  6. 2026-04-30 Iowa Legislature

    Passed House , yeas 81, nays 3. H.J. 1050 .

  7. 2026-04-30 Iowa Legislature

    House concurred in Senate amendment H-8431 . H.J. 1050 .

  8. 2026-04-29 Iowa Legislature

    Senate amendment H-8431 filed. H.J. 1047 .

  9. 2026-04-29 Iowa Legislature

    Message from Senate. H.J. 1035 .

  10. 2026-04-29 Iowa Legislature

    Immediate message. S.J. 918 .

  11. 2026-04-29 Iowa Legislature

    Passed Senate , yeas 46, nays 0. S.J. 918 .

  12. 2026-04-29 Iowa Legislature

    Amendment S-5114 adopted. S.J. 917 .

  13. 2026-03-26 Iowa Legislature

    Placed on calendar under unfinished business. S.J. 659 .

  14. 2026-03-19 Iowa Legislature

    Placed on calendar.

  15. 2026-03-19 Iowa Legislature

    Amendment S-5114 filed. S.J. 607 .

  16. 2026-03-19 Iowa Legislature

    Committee report, recommending amendment and passage. S.J. 607 .

  17. 2026-03-17 Iowa Legislature

    Subcommittee recommends passage.

  18. 2026-03-17 Iowa Legislature

    Subcommittee: Webster, Rozenboom, and Staed. S.J. 586 .

  19. 2026-03-16 Iowa Legislature

    Subcommittee Meeting: [].

  20. 2026-03-16 Iowa Legislature

    Read first time, referred to State Government. S.J. 574 .

  21. 2026-03-16 Iowa Legislature

    Message from House. S.J. 574 .

  22. 2026-03-12 Iowa Legislature

    Immediate message. H.J. 666 .

  23. 2026-03-12 Iowa Legislature

    Passed House , yeas 87, nays 4. H.J. 657 .

  24. 2026-02-05 Iowa Legislature

    Introduced, placed on calendar. H.J. 213 .

Official Summary Text

A bill for an act relating to radon mitigation in residential buildings. (Formerly HF 82 .) Effective date: 07/01/2026.

Current Bill Text

Read the full stored bill text 
STATE OF IOWA
KIM REYNOLDS
GOVERNOR
May 19,2026
The Honorable Paul Pate
Secretary of State of Iowa
State Capitol
Des Moines, Iowa 50319
Dear Mr. Secretary,
I hereby transmit:
House File 2297, an Act relating to radon mitigation in residential buildings.
The above House File is hereby approved on this date.
S merely,
Kiie Reynolds
Go^mor of IoW§
cc: Secretary of the Senate
Clerk of the House
STATE CAPITOL DES MOINES, IOWA 50319 515.281.5211 WWW.GOVERNOR.IOWA.GOV
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House Pile 2297
AN ACT
RELATING TO RADON MITIGATION IN RESIDENTIAL BUILDINGS.
BE IT ENACTED BY THE GENERAL ASSEMBLY OF THE STATE OF IOWA:
Section 1. NEW SECTION. 103A.8E Radon mitigation
requirements.
The commissioner shall adopt as part of the state building
code a requirement that new single-family or two-family
residential construction must 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 only
apply to single-family or two-family residential construction
commenced after the adoption of the requirement.
Sec. 2. Section 103A.10, subsection 4, Code 2026, is amended
by adding the following new paragraph:
House Pile 2297, p. 2
NEW PARAGRAPH. c. Provisions of the state building
code relating to radon mitigation requirements shall be
applicable to all new single-family and two-family residential
construction in this state.
'AT GRASSL^PAT
Speaker of the House
AMY SINqjAIR
President of the Senate
I hereby certify that this bill originated in the House and
is known as House File 2297, Ninety-first General Assembly.
Approved 2026
tyjAjnMEGimN NELSON
Chi« ClerK^f the House
YNOLDS