Most listings are in the $20's per square foot per year. The Bozeman region is going through a a rise in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 10% rise in rent.
In the last 90 days, 24 listings have been made available, which means leases are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 67% of the available leases 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 900 sqft. Most properties in this market are close to 2 stories. Most buildings in this region were built in 1997 and are Class B.