The typical asking rate per listing is in the $20's per square foot per year. The Berkeley County submarket is seeing a a rise in rates. In the last 3 months, the median rate rose $21 per sqft per year.
In the last 90 days, 34 listings have been posted online, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. About 18% of the listings in the Berkeley County 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 on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,600 sqft. Most properties in this market are around 2 stories. Most buildings in this market were built in 2001 and are Class A.