On average, listings lease in the $10's per square foot per year. The Delaware County region is going through a an increase in rates. In the last 3 months, the median rate increased $15 per sqft per year.
In the last 90 days, 10 listings have been posted online, which means listings are probably going fast. You'll want to be prepared to make an offer immediately. About 360% of the available leases in the Delaware County 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 1,270 sqft. Most buildings in this region are around 1 floors. Most buildings in this region were built in 1968 and are Class A.