On average, listings lease in the $20's per square foot per year. The Arlington Heights region is seeing a an increase in rates. In the last 3 months, the median rate rose $20 per sqft per year.
In the last 90 days, 3 listings have been posted online, which means spaces most likley are going fast. 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.
Even though the median size is 7,000 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this market are around 2 stories. Most buildings in this area were built in 1925 and are Class B.