On average, listings lease in the $20's per square foot per year. The Franklin region is experiencing a a boost in rates. In the last 3 months, the median rate rose $7 per sqft per year. That's a 45% rise in rent.
Compared to the rest of the Milwaukee County market, the Franklin region has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 3 listings have been listed, which means new availabilities 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 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 1,900 sqft. Most properties in this region are close to 3 floors. Most buildings in this area were built in 1998 and are Class B.