The typical asking rate per listing is in the $0's per square foot per year. The Kuna submarket is going through a decline in rates. In the last 3 months, the median rate fell $21 per sqft per year. That's a 100% decrease in rent.
In the last 90 days, 0 listings have been made available, which means listings might be going fast. You'll want to be prepared to make an offer immediately. About NaN% of the available space in the Kuna are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around sqft. Most buildings in this market were built in 2007 and are Class B.