Most listings are in the $30's per square foot per year. The Mount Pleasant submarket is experiencing a a rise in rates. In the last 3 months, the median rate went up $3 per sqft per year. That's a 9% increase in rent.
In the last 90 days, 35 listings have been posted online, which means listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 11% of the listings in the Mount Pleasant are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 2,450 sqft. Most buildings in this market are approximately 2 floors. Most buildings in this region were built in 2002 and are Class A.