Most listings are in the $10's per square foot per year. The Richmond County region is going through a a boost in rates. In the last 3 months, the median rate rose $17 per sqft per year.
In the last 90 days, 61 listings have been posted online, so you'll want to check back regularly for new listings. About 67% of the listings in the Richmond County are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 2,200 sqft. Most buildings in this area are approximately 2 floors. Most buildings in this area were built in 1980 and are Class B.