The typical asking rate per listing is in the $20's per square foot per year. The Valparaiso region is going through a a boost in rates. In the last 3 months, the median rate rose $2 per sqft per year. That's a 10% increase in rent.
Compared to the rest of the Chicagoland market, the Valparaiso region has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 3 listings have been posted online, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 200% of the available space in the Valparaiso are subleases, so you might be able to find a shorter term or below market rent. 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 2,000 sqft. Most properties in this area are around 2 stories. Most buildings in this market were built in 1979 and are Class B.