The typical asking rate per listing is in the $30's per square foot per year. The Nashville region is going through a an increase in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 9% rise in rent.
Compared to the rest of the Nashville market, the Nashville region has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 113 listings have been made available, so you'll want to check back regularly for new listings. About 8% of the available space in the Nashville are subleases, so you will probably have to consider a longer term 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.
Even though the median size is 6,750 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this area are close to 3 stories. Most buildings in this area were built in 1984 and are Class B.