Most listings are in the $30's per square foot per year. The Charleston County region is going through a decrease in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 8% decrease in rent.
In the last 90 days, 88 listings have been listed, so you'll want to check back regularly for new listings. About 6% of the available leases in the Charleston County are subleases, so you will probably have to consider a longer term lease. 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 2,630 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this market are approximately 2 stories. Most buildings in this region were built in 1988 and are Class A.