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Commission recommends ordinance changes to align accessory dwelling unit rules with new state law
Summary
Staff presented changes required by a new state law that preempts local ADU regulation; the commission recommended City Council adopt amendments aligning local rules (size measured by gross floor area, remove owner‑occupancy and parking requirements, and allow ADUs on duplex lots).
The Ames City Planning and Zoning Commission recommended that City Council adopt zoning text amendments to align local accessory dwelling unit (ADU) rules with a state law that takes effect July 1.
Staff summarized the state legislation, saying it allows ADUs where single‑family homes are permitted and caps ADU size at 1,000 square feet or 50% of the primary residence. Staff recommended measuring size using the…
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