On average, listings lease in the $20's per square foot per year. The Barrington submarket is seeing a a rise in rates. In the last 3 months, the median rate increased $6 per sqft per year. That's a 30% rise in rent.
Compared to the rest of the Chicagoland market, the Barrington submarket has more expensive rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 25 listings have been made available, which means listings are probably 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 1,230 sqft. Most properties in this region are around 2 stories. Most buildings in this area were built in 1984 and are Class B.