On average, listings lease in the $10's per square foot per year. The Griffith submarket is going through a an increase in rates. In the last 3 months, the median rate went up $16 per sqft per year.
Compared to the rest of the Chicagoland market, the Griffith region has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 0 listings have come on the market, which means leases are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About Inf% of the office spaces in the Griffith are subleases, so you might be able to find a shorter term or below market rent. 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 1,200 sqft. Most buildings in this area are around 1 floors. Most buildings in this region were built in 1994 and are Class A.