The typical asking rate per listing is in the $20's per square foot per year. The Rexburg submarket is going through a a boost in rates. In the last 3 months, the median rate rose $12 per sqft per year. That's a 82% increase in rent.
In the last 90 days, 3 listings have been posted online, which means listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 33% of the available leases in the Rexburg are subleases, so you might be able to snag a great spot on a short term. 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 were built in 2006 and are Class A.