In the last 90 days, 0 listings have been listed, which means office spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About NaN% of the listings in the Riverfront are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 sqft. Most buildings in this area were built in 1900.
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 folk 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.