Most listings are in the $20's per square foot per year. The Riverside submarket is going through a a rise in rates. In the last 3 months, the median rate increased $4 per sqft per year. That's a 19% increase in rent.
In the last 90 days, 35 listings have been posted online, which means new availabilities most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 97% of the listings in the Riverside are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,650 sqft. Most properties in this region are close to 3 stories. Most buildings in this market were built in 1912 and are Class A.
A large portion of this area is residential, but there's plenty of office_space. Waste services is the dominant industry in this area. Commute by public transit is the most popular way to get to work amongst Riverside residents. Commuting around 20 minutes a day is the norm for those who opt to reside in this part of town.