The typical asking rate per listing is in the $10's per square foot per year. The Fargo submarket is going through a decline in rates. In the last 3 months, the median rate decreased $0 per sqft per year. That's a 2% decline in rent.
In the last 90 days, 11 listings have been listed, which means office spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 36% of the available space in the Fargo 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 1,800 sqft. Most buildings in this market are around 2 floors. Most buildings in this market were built in 1992 and are Class B.