On average, listings lease in the $20's per square foot per year. The Rock Springs region is going through a a boost in rates. In the last 3 months, the median rate increased $21 per sqft per year.
In the last 90 days, 9 listings have been made available, which means office spaces might be leasing quickly. You'll want to be prepared to make an offer immediately. About 22% of the available space in the Rock Springs are subleases, so you might be able to snag a great spot on a short term. 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 560 sqft. Most properties in this area are around 1 floors. Most buildings in this area were built in 2004 and are Class A.