Most listings are in the $10's per square foot per year. The Johnston County submarket is experiencing a an increase in rates. In the last 3 months, the median rate increased $18 per sqft per year.
Compared to the rest of the The Triangle market, the Johnston County submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 27 listings have been posted online, which means leases most likley are going fast. You'll want to be prepared to make an offer immediately. About 85% of the available leases in the Johnston 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 1,100 sqft. Most buildings in this region are approximately 1 stories. Most buildings in this market were built in 2003 and are Class B.