The typical asking rate per listing is in the $20's per square foot per year. The Butler County submarket is going through a an increase in rates. In the last 3 months, the median rate went up $29 per sqft per year.
In the last 90 days, 14 listings have come on the market, which means spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 7% of the available space in the Butler 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 240 sqft. Most buildings in this area are approximately 1 floors. Most buildings in this region were built in 2002 and are Class B.