On average, listings lease in the $20's per square foot per year. The Tompkins County region is going through a a boost in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 13% increase in rent.
In the last 90 days, 4 listings have been posted online, which means listings most likley are going fast. 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 1,460 sqft. Most buildings in this area are around 12 floors. Most buildings in this market were built in 2002 and are Class A.