In the last 90 days, 4 listings have been listed, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. 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 buildings in this market were built in 1900 and are Class A.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Waste services is the dominant industry in this market. Most of the occupants of Riverfront work from home. Commuting between 20 and 25 minutes a day is the norm for those who opt to reside in this part of town.