Most listings are in the $20's per square foot per year. The Darien submarket is seeing a a rise in rates. In the last 3 months, the median rate went up $6 per sqft per year. That's a 33% increase in rent.
Compared to the rest of the Chicagoland market, the Darien submarket has higher rates, and you'll need to pay a premium to be in this hot submarket.
In the last 90 days, 4 listings have been listed, which means new availabilities are probably leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,860 sqft. Most buildings in this region are close to 1 floors. Most buildings in this region were built in 1990 and are Class B.