Most listings are in the $10's per square foot per year. The Warren County region is experiencing a an increase in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 13% increase in rent.
In the last 90 days, 10 listings have been posted online, which means new listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. 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 2,000 sqft. Most properties in this area are close to 1 floors. Most buildings in this area were built in 1975 and are Class C.