Most listings are in the $20's per square foot per year. The Wauwatosa region 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 region has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 26 listings have been listed, which means new listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 8% of the available space in the Wauwatosa are subleases, so you will probably have to focus your search on direct office leases. 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 1,500 sqft. Most buildings in this region are around 3 floors. Most buildings in this area were built in 1975 and are Class B.