Most listings are in the $10's per square foot per year. The Peoria region is going through a a boost in rates. In the last 3 months, the median rate increased $0 per sqft per year. That's a 2% increase in rent.
In the last 90 days, 159 listings have come on the market, so you'll want to check back regularly for new listings. About 19% of the available leases in the Peoria 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 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 550 sqft. Most properties in this region are close to 2 stories. Most buildings in this region were built in 1972 and are Class C.