Most listings are in the $10's per square foot per year. The Addison submarket is seeing a decline in rates. In the last 3 months, the median rate fell $11 per sqft per year. That's a 38% decline in rent.
Compared to the rest of the Chicagoland market, the Addison region has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 6 listings have come on the market, which means spaces might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 1,500 sqft. Most properties in this area are around 1 floors. Most buildings in this market were built in 1983 and are Class B.