On average, listings lease in the $20's per square foot per year. The North Charleston region is going through a decline in rates. In the last 3 months, the median rate fell $4 per sqft per year. That's a 14% decrease in rent.
In the last 90 days, 41 listings have been made available, so you'll want to check back regularly for new listings. About 7% of the available leases in the North Charleston are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 3,580 sqft, there are still 0 new listings below 2,000 sqft. Most buildings in this area are close to 2 floors. Most buildings in this region were built in 1991 and are Class A.