Service area · Bonneville County
Ammon is the second-largest city in Bonneville County and the fastest growing, and the shop demand here tracks the household numbers rather than the acreage.
Mon–Fri 8am–5pm · Idaho Falls and the surrounding towns
Send the address and the size you have in mind. You’ll get the design load your jurisdiction requires and the office that permits it.
Ammon is a city of 17,694, four miles southwest of the Idaho Falls airport station. It is the second-largest city in Bonneville County and the one growing fastest, at +13.5%.
Median household income is $86,121, median home value $381,800, and owner-occupancy 69.1%. That combination — owned homes, above-average income, continued growth — is the profile behind detached shop and garage demand rather than ag storage demand.
A regional driver worth naming: Idaho National Laboratory employs over 6,200 people, is Idaho’s fifth-largest employer, and each INL job supports roughly 1.8 more — about 11,200 additional Idaho jobs. Average base salary was $104,157 in FY2020. That payroll is a large part of why this corner of the county keeps adding households.
The City of Ammon Building Department handles permits inside city limits. That is worth stating plainly because the arrangement is not consistent across this area: Rigby’s permits come from Jefferson County, and unincorporated Bonneville parcels go to county Planning & Zoning.
Confirm your parcel is actually inside the city before filing. Ammon and unincorporated Bonneville County interlock closely at the edges, and the boundary is not always where a mailing address suggests.
Confirm current requirements, fees and setbacks with the department before ordering material.
Ammon sits at 4,718 feet and carries 24 psf in the 2015 University of Idaho study — effectively the same as Idaho Falls at 23, and materially lower than Rigby at 32 or Shelley at 35. The figure that governs a permit is still the one the jurisdiction adopts, which can be higher than the study value. Footings reach the 30-inch frost depth here as everywhere on this plain. Loads by town →
Post-frame shops from 24x32 up, sized around door height, truss spacing and the snow load your jurisdiction adopts.
Clear height drives the price: a 14 ft door needs roughly 16 ft of sidewall, and that changes post and truss spec.
Send the address and the shop size you have in mind. You'll get confirmation of which office permits it, the design load that applies, and what the ground is likely to add.