Most listings are in the $10's per square foot per year. The Kootenai County submarket is experiencing a a boost in rates. In the last 3 months, the median rate increased $2 per sqft per year. That's a 10% increase in rent.
In the last 90 days, 34 listings have been made available, which means new availabilities are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 194% of the listings in the Kootenai County are subleases, so you might be able to sign a shorter term by taking over a previous 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 1,150 sqft. Most properties in this region are close to 1 stories. Most buildings in this region were built in 1980 and are Class A.