Most listings are in the $0's per square foot per year. The Charleston region is seeing a decline in rates. In the last 3 months, the median rate fell $60 per sqft per year. That's a 100% decrease in rent.
In the last 90 days, 5 listings have been made available, which means spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. 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 1,800 sqft. Most properties in this area are close to 1 stories. Most buildings in this market were built in 0.