On average, listings lease in the $20's per square foot per year. The Franklin submarket is seeing a a boost in rates. In the last 3 months, the median rate rose $23 per sqft per year.
Compared to the rest of the Milwaukee County market, the Franklin region has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 3 listings have come on the market, which means office spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 133% of the available space in the Franklin are subleases, so you might be able to snag a great spot on a short term. 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 2,170 sqft. Most properties in this area are close to 1 floors. Most buildings in this market were built in 2004 and are Class A.