On average, listings lease in the $10's per square foot per year. The West Allis submarket is seeing a a boost in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 7% increase in rent.
Compared to the rest of the Milwaukee County market, the West Allis region has lower rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 10 listings have come on the market, which means listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. 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 1,000 sqft. Most buildings in this market are close to 1 stories. Most buildings in this area were built in 1968 and are Class B.