Compared to the rest of the Chicagoland market, the Northbrook submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 30 listings have been made available, which means new listings might be 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 2,250 sqft. Most properties in this area are approximately 4 stories. Most buildings in this region were built in 1980 and are Class A.