On average, listings lease in the $20's per square foot per year. The Williston submarket is seeing a an increase in rates. In the last 3 months, the median rate rose $21 per sqft per year.
In the last 90 days, 9 listings have been posted online, which means office spaces might be leasing quickly. You'll want to be prepared to make an offer immediately. About 33% of the available space in the Williston 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 750 sqft. Most buildings in this market were built in 2011 and are Class A.