Most listings are in the $10's per square foot per year. The Garner region is experiencing a an increase in rates. In the last 3 months, the median rate went up $17 per sqft per year.
Compared to the rest of the The Triangle market, the Garner submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 4 listings have come on the market, which means office spaces most likley are going fast. You'll want to be prepared to make an offer immediately. About 125% of the office spaces in the Garner 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.
The standard measurement for office space in this area is around 1,940 sqft. Most buildings in this region are around 1 floors. Most buildings in this market were built in 1997 and are Class B.