Idaho Falls, ID Short-Term Rentals: Night Caps (2026)

Idaho Falls does not impose an annual night cap or limit on how many days per year a property may be rented short-term. The city's Short-Term Rentals FAQ defines a short-term rental by the length of each stay, not by a yearly ceiling: an STR is renting property "to a guest for a short (less than 30 days) period." The threshold that matters is per-booking duration, less than 30 days makes a stay a short-term rental for zoning and tax purposes, while 30 days or longer is treated as a longer-term tenancy. Beyond that per-stay definition, there is no published rule limiting the total number of nights, bookings, or days per calendar year an Idaho Falls STR may operate. Because the use is permitted in any residential zone with no application, an operator may host short-term stays year-round subject only to the generally applicable codes and the one-party-at-a-time rule. A restrictive annual night cap, such as the 90-day or similar limits some cities use, would risk having "the express or practical effect of prohibiting short-term rentals," which Idaho Code 67-6539 forbids, and Idaho's strengthened preemption (House Bill 583, 2026) further constrains cities from STR-only operational caps. The only duration-based consequence in Idaho Falls is tax-related: lodging taxes (state sales, Travel and Convention, and Idaho Falls Auditorium District) apply to stays of 30 days or less and generally drop off for longer continuous stays.