In the last 90 days, 56 listings have been made available, so you'll want to check back regularly for new listings. About 2% of the available space in the Alton are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around sqft. Most properties in this area are approximately 2 stories. Most buildings in this area were built in 1963 and are Class B.