On average, listings lease in the $0's per square foot per year. The Salt Lake City region is going through a decrease in rates. In the last 3 months, the median rate decreased $26 per sqft per year. That's a 100% decline in rent.
In the last 90 days, 162 listings have been listed, so you'll want to check back regularly for new listings. 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 sqft. Most properties in this market are around 5 stories. Most buildings in this area were built in 1979 and are Class B.