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Mayfield council adopts ordinance regulating internal accessory dwelling units
Summary
The Mayfield Town Council passed Ordinance 2026-1 establishing rules for internal accessory dwelling units (IADUs): owner-occupancy, one IADU per single-family dwelling, long-term rental only, parking requirements, septic approval from Central Utah Health Department, and prohibited separate meters without approval. The ordinance takes effect upon passage and posting.
Mayfield — On Feb. 11 the Mayfield Town Council voted to adopt Ordinance 2026-1, establishing regulations for internal accessory dwelling units (IADUs) within single-family residences.
What the ordinance does: The ordinance defines an IADU as an accessory dwelling unit located entirely within the footprint of an existing single-family dwelling and requires the primary dwelling to be owner-occupied. It allows only one IADU per single-family lot and limits occupancy of the IADU to a single family. Short-term rentals are prohibited; IADUs are permitted only for long-term residential occupancy (30 days or more).
Development and health standards: IADUs must meet building, electrical, plumbing, mechanical, and state fire codes adopted by the town. The ordinance requires septic-system feasibility approval from the Central Utah Health Department before an IADU is approved. If an IADU is created in a garage, required off-street parking must be replaced and cannot be located in front of the primary dwelling. Separate exterior entrances are allowed, but separate utility meters are prohibited unless expressly approved by Mayfield Town; IADUs retain the same street address and are to be designated as unit B.
Adoption and effective date: Councilmember motioned and a second was recorded; council members voted in favor and Speaker 1 declared the motion passed. The ordinance text read in the meeting states the effective date is upon passage, approval, and posting with the date cited as February 2026.
Why it matters: The ordinance is Mayfield’s mechanism to comply with Utah law requiring municipalities to allow certain accessory units while the council also sought to preserve single-family neighborhood character through owner-occupancy, parking, and septic feasibility controls.
Provenance: The ordinance text, definitions, and development standards were read into the public record by the presiding reader and the vote to adopt was recorded during the meeting.
