Most listings are in the $30's per square foot per year. The Salt Lake City submarket is going through a a boost in rates. In the last 3 months, the median rate increased $33 per sqft per year.
Compared to the rest of the Salt Lake City market, the Salt Lake City submarket has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 162 listings have been posted online, so you'll want to check back regularly for new listings. About 73% of the available leases in the Salt Lake City 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,870 sqft. Most buildings in this region are around 5 stories. Most buildings in this area were built in 1978 and are Class B.