The typical asking rate per listing is in the $20's per square foot per year. The Northwest Side submarket is experiencing a an increase in rates. In the last 3 months, the median rate went up $3 per sqft per year. That's a 14% rise in rent.
Compared to the rest of the Chicagoland market, the Northwest Side region has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 67 listings have been made available, so you'll want to check back regularly for new listings. About 1% of the available leases in the Northwest Side are subleases, so you will probably have to consider a longer term lease. 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 1,320 sqft. Most properties in this area are around 2 floors. Most buildings in this region were built in 1952 and are Class A.