The typical asking rate per listing is in the $10's per square foot per year. The North Dakota submarket is going through a decrease in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 6% decline in rent.
In the last 90 days, 76 listings have been listed, so you'll want to check back regularly for new listings. About 1% of the office spaces in the North Dakota are subleases, so you will probably have to consider a longer term 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 2,400 sqft. Most buildings in this area are around 2 floors. Most buildings in this region were built in 1992 and are Class A.