On average, listings lease in the $10's per square foot per year. The Buffalo region is seeing a decrease in rates. In the last 3 months, the median rate fell $6 per sqft per year. That's a 27% decline in rent.
In the last 90 days, 4 listings have been posted online, which means new availabilities 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 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 1,280 sqft. Most buildings in this area are around 1 stories. Most buildings in this market were built in 1980 and are Class B.