On average, listings lease in the $20's per square foot per year. The Bozeman region is experiencing a an increase in rates. In the last 3 months, the median rate rose $26 per sqft per year.
In the last 90 days, 24 listings have come on the market, which means new listings are probably going fast. You'll want to be prepared to make an offer immediately. About 54% of the listings in the Bozeman 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 on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,040 sqft. Most buildings in this region are close to 2 stories. Most buildings in this market were built in 1997 and are Class A.