The typical asking rate per listing is in the $20's per square foot per year. The St. George submarket is experiencing a a boost in rates. In the last 3 months, the median rate went up $4 per sqft per year. That's a 26% rise in rent.
In the last 90 days, 33 listings have been made available, which means new availabilities most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,500 sqft. Most properties in this area are close to 2 stories. Most buildings in this region were built in 1998 and are Class B.