Most listings are in the $0's per square foot per year. The Oak Creek region is going through a decrease in rates. In the last 3 months, the median rate decreased $20 per sqft per year. That's a 100% decrease in rent.
In the last 90 days, 2 listings have been listed, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About 350% of the available leases in the Oak Creek are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around sqft. Most properties in this region are close to 3 stories. Most buildings in this region were built in 1998 and are Class A.