On average, listings lease in the $20's per square foot per year. The Woodstock region is going through a a boost in rates. In the last 3 months, the median rate increased $21 per sqft per year.
Compared to the rest of the Chicagoland market, the Woodstock region has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 9 listings have been posted online, which means office spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 67% of the available leases in the Woodstock are subleases, so you might be able to snag a great spot on a short term. 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 1,400 sqft. Most buildings in this region are close to 1 floors. Most buildings in this region were built in 1977 and are Class B.