Most listings are in the $10's per square foot per year. The East Peoria submarket is experiencing a decrease in rates. In the last 3 months, the median rate decreased $4 per sqft per year. That's a 18% decline in rent.
In the last 90 days, 15 listings have been listed, which means leases most likley are going fast. You'll want to be prepared to make an offer immediately. 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 350 sqft. Most buildings in this market are around 1 floors. Most buildings in this region were built in 1978 and are Class B.