On average, listings lease in the $50's per square foot per year. The Moorhead region is experiencing a an increase in rates. In the last 3 months, the median rate increased $50 per sqft per year.
In the last 90 days, 2 listings have come on the market, which means leases most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 220 sqft. Most buildings in this market are around 2 stories.