Most listings are in the $10's per square foot per year. The St. George submarket is going through a a boost in rates. In the last 3 months, the median rate went up $14 per sqft per year.
In the last 90 days, 33 listings have been posted online, which means new availabilities might be going fast. You'll want to be prepared to make an offer immediately. About 36% of the office spaces in the St. George 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 1,250 sqft. Most buildings in this area are close to 2 stories. Most buildings in this market were built in 1998 and are Class B.