Most listings are in the $10's per square foot per year. The Peoria County submarket is going through a decrease in rates. In the last 3 months, the median rate decreased $2 per sqft per year. That's a 11% decrease in rent.
In the last 90 days, 198 listings have been posted online, so you'll want to check back regularly for new listings. About 1% of the available space in the Peoria County are subleases, so you will probably have to consider a longer term 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 2,400 sqft. Most properties in this market are approximately 2 stories. Most buildings in this area were built in 1971 and are Class C.