Most listings are in the $20's per square foot per year. The Northbrook region is seeing a decrease in rates. In the last 3 months, the median rate decreased $5 per sqft per year. That's a 19% decline in rent.
Compared to the rest of the Chicagoland market, the Northbrook submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 30 listings have been posted online, which means listings 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 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 1,570 sqft. Most properties in this market are around 4 floors. Most buildings in this market were built in 1982 and are Class A.