The typical asking rate per listing is in the $30's per square foot per year. The Charleston County region is experiencing a an increase in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 9% increase in rent.
In the last 90 days, 93 listings have been made available, 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,190 sqft. Most properties in this market are close to 2 stories. Most buildings in this region were built in 1988 and are Class A.