Planning commission backs larger geotechnical-report threshold for accessory structures

The Cache County Planning and Zoning Commission on June 4 voted to recommend that the county council adopt an amendment raising the size threshold that requires a geotechnical report from 200 square feet to 2,400 square feet.

Connor, planning staff, told the commission that the change “increasing that minimum or requires footprint size from 200 square feet to 2400 hundred square feet,” and that staff added language to specify the requirement applies to accessory structures “not meant for human occupancy and is a single story.” No members of the public spoke during the noticed hearing on the amendment.

Commissioner S11 said the revision matched the commissioners' expectations: “I like it. It's what we wanted,” and Commissioner S8 moved that the body recommend approval to the county council. The motion was seconded and passed on a voice vote.

Why it matters: the geotechnical-report threshold determines which small outbuildings and accessory structures must include professional geotechnical analysis before a plat is recorded or a permit is finalized. Supporters argued the higher threshold focuses county review on larger developments that are more likely to present geologic hazards, while staff said the clarified language helps avoid unintended application to small sheds and similar non‑habitable structures.

Details from the record: staff noted the amendment retains previous standards but adds the accessory‑structure clarification and the single‑story limitation. The commission record shows staff completed public notice and that there were no speakers during the public hearing; commissioners then made a recommendation to forward the amendment to the county council for final action.

Next steps: the commission’s recommendation will be forwarded to the Cache County Council for final consideration and any further revisions.