Most listings are in the $10's per square foot per year. The Barrington region is seeing a a rise in rates. In the last 3 months, the median rate went up $17 per sqft per year.
Compared to the rest of the Chicagoland market, the Barrington submarket has lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 40 listings have been listed, which means leases might be going fast. You'll want to be prepared to tour spaces as quick as possible. About 93% of the available space in the Barrington 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 1,170 sqft. Most buildings in this region are close to 2 stories. Most buildings in this area were built in 1980 and are Class B.