Most listings are in the $20's per square foot per year. The Wauwatosa submarket is experiencing a decrease in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 5% decrease in rent.
Compared to the rest of the Milwaukee County market, the Wauwatosa submarket has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 29 listings have been listed, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 7% of the available space in the Wauwatosa are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 2,484 sqft. Most properties in this market are around 3 stories. Most buildings in this area were built in 1975 and are Class B.