Most listings are in the $30's per square foot per year. The Erie submarket is going through a an increase in rates. In the last 3 months, the median rate went up $9 per sqft per year. That's a 39% rise in rent.
In the last 90 days, 7 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. About 129% of the available space in the Erie are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 370 sqft. Most buildings in this area are around 2 stories. Most buildings in this region were built in 1942 and are Class B.