On average, listings lease in the $10's per square foot per year. The Waukesha County region is going through a decrease in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 8% decrease in rent.
In the last 90 days, 123 listings have been made available, so you'll want to check back regularly for new listings. About 2% of the available leases in the Waukesha County 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 on the market, so finding a space for a small business might be tough.
Even though the median size is 2,700 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this region are close to 2 floors. Most buildings in this market were built in 1988 and are Class B.