Most listings are in the $10's per square foot per year. The Idaho region is going through a a rise in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 4% increase in rent.
In the last 90 days, 481 listings have been made available, so you'll want to check back regularly for new listings. About 2% of the office spaces in the Idaho are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,590 sqft. Most buildings in this region are around 1 stories. Most buildings in this region were built in 1986 and are Class A.