Most listings are in the $10's per square foot per year. The Mandan submarket is going through a decline in rates. In the last 3 months, the median rate fell $5 per sqft per year. That's a 26% decrease in rent.
In the last 90 days, 1 listings have been posted online, which means listings might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 100% of the office spaces in the Mandan are subleases, so you might be able to snag a great spot on a short term. 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 1,200 sqft. Most buildings in this area were built in 2003 and are Class A.