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91st General Assembly · Funnel one-pager · Monday, November 9, 2026

HSB 618: Relating to county and city regulation of accessory dwelling units

Became HF 2252 · Its progress continues under the new number.

What it does

Under current law, a county or city shall allow a minimum of one accessory dwelling unit (ADU) on the same lot as a single family residence in accordance with certain conditions. This bill specifies that a county or city shall allow a minimum of one ADU on the same lot as a single family residence within a zoning district where a single family residence is an allowed principal use. Under current law, an ADU shall not exceed 1,000 square feet or percent of the size of the single family residence, whichever is larger.

Sponsors

Not listed

Cost

No fiscal note

House subcommittee · named January 22, 2026

  • Rep. Craig Steven Williams (R) · craig.williams@legis.iowa.gov
  • Rep. David L. Blom (R) · david.blom@legis.iowa.gov
  • Rep. Adam Zabner (D) · adam.zabner@legis.iowa.gov

Lobbying · 12 for, 0 against

For: AARP Iowa; American Planning Association Iowa Chapter; Americans For Prosperity; City of Bettendorf; Easterseals Iowa; Greater Des Moines Habitat for Humanity; Habitat for Humanity of Iowa; Home Builders Association of Iowa; Iowa Association of Realtors; Iowa Chapter, American Institute of Architects; Iowa Integrated Health Planning and Advisory Council; Iowa Manufactured Housing Association

In plain words

  1. January 22, 2026Filed in the House and sent to the Local Government committee
  2. January 22, 2026House subcommittee named: Williams, Blom and Zabner
  3. January 28, 2026Subcommittee recommended passing it
  4. January 29, 2026Approved by the House committee
  5. January 30, 2026Approved by the House committee, and given a new number: HF 2252

From public records at legis.iowa.gov, compiled by Funnel (iowafunnel.com), an independent, nonpartisan site. Current as of Monday, November 9, 2026. https://iowafunnel.com/bills/91/HSB618