The typical asking rate per listing is in the $10's per square foot per year. The Buncombe County submarket is going through a decrease in rates. In the last 3 months, the median rate fell $7 per sqft per year. That's a 28% decrease in rent.
In the last 90 days, 70 listings have been made available, so you'll want to check back regularly for new listings. About 1% of the available leases in the Buncombe County are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 1,480 sqft. Most buildings in this area are around 2 floors. Most buildings in this area were built in 1980 and are Class B.