Most listings are in the $20's per square foot per year. The Summerville submarket is going through a a rise in rates. In the last 3 months, the median rate rose $28 per sqft per year.
In the last 90 days, 11 listings have been listed, which means new availabilities are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 109% of the available space in the Summerville 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 posted, so finding a space for a small business might be tough.
Even though the median size is 2,720 sqft, there are still 0 leases below 2,000 sqft. Most properties in this market are close to 2 stories. Most buildings in this market were built in 1987 and are Class A.