Most listings are in the $10's per square foot per year. The Moreno Valley submarket is going through a a rise in rates. In the last 3 months, the median rate increased $17 per sqft per year. That's a Inf% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Moreno Valley submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 2 listings have been posted online, which means office spaces might be 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 1,860 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this area were built in 1989 and are Class B.