The typical asking rate per listing is in the $10's per square foot per year. The Mount Pleasant region is experiencing a a rise in rates. In the last 3 months, the median rate increased $3 per sqft per year. That's a 17% increase in rent.
In the last 90 days, 4 listings have been listed, which means new listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 2,160 sqft. Most buildings in this market are approximately 1 stories. Most buildings in this area were built in 1978 and are Class C.