The typical asking rate per listing is in the $20's per square foot per year. The Salt Lake County region is going through a an increase in rates. In the last 3 months, the median rate rose $28 per sqft per year.
In the last 90 days, 398 listings have been listed, so you'll want to check back regularly for new listings. About 109% of the available space in the Salt Lake County are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 2,580 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are close to 3 floors. Most buildings in this region were built in 1987 and are Class B.