The typical asking rate per listing is in the $10's per square foot per year. The Fargo region is experiencing a decrease in rates. In the last 3 months, the median rate decreased $3 per sqft per year. That's a 13% decrease in rent.
In the last 90 days, 11 listings have been listed, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. About 9% of the available space in the Fargo are subleases, so you will probably have to consider a longer term 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 1,500 sqft. Most properties in this area are approximately 2 stories. Most buildings in this area were built in 1997 and are Class B.