The typical asking rate per listing is in the $10's per square foot per year. The Elmira region is going through a a rise in rates. In the last 3 months, the median rate went up $20 per sqft per year.
In the last 90 days, 3 listings have been listed, which means listings are probably leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,320 sqft. Most buildings in this region were built in 1975 and are Class B.