The typical asking rate per listing is in the $20's per square foot per year. The Myrtle Beach submarket is seeing a decline in rates. In the last 3 months, the median rate decreased $5 per sqft per year. That's a 18% decrease in rent.
In the last 90 days, 8 listings have come on the market, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 25% of the office spaces in the Myrtle Beach are subleases, so you might be able to find a shorter term or below market rent. 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 6,430 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this region are around 2 floors. Most buildings in this area were built in 1996 and are Class A.