Most listings are in the $10's per square foot per year. The Corning submarket is going through a decrease in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 10% decline in rent.
In the last 90 days, 3 listings have been listed, which means office spaces are probably going fast. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 5,300 sqft, there are still 0 leases below 2,000 sqft. Most properties in this market are approximately 2 floors. Most buildings in this area were built in 1910 and are Class B.