Most listings are in the $10's per square foot per year. The Dorchester County submarket is going through a decrease in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 7% decrease in rent.
In the last 90 days, 15 listings have been posted online, which means listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 20% of the available leases in the Dorchester 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,180 sqft. Most buildings in this area are around 2 stories. Most buildings in this area were built in 1989 and are Class B.