On average, listings lease in the $10's per square foot per year. The Oshkosh submarket is going through a a boost in rates. In the last 3 months, the median rate rose $14 per sqft per year. That's a Inf% increase in rent.
In the last 90 days, 3 listings have been posted online, which means office spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. 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 1,320 sqft. Most properties in this market are around 2 floors. Most buildings in this region were built in 0 and are Class Class A.