The typical asking rate per listing is in the $10's per square foot per year. The Rexburg submarket is seeing a decline in rates. In the last 3 months, the median rate fell $0 per sqft per year. That's a 2% decline in rent.
In the last 90 days, 5 listings have been listed, which means new availabilities most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 20% of the available space in the Rexburg are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 4,530 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this area are around 2 floors. Most buildings in this market were built in 2006 and are Class A.