On average, listings lease in the $10's per square foot per year. The Moreno Valley region is experiencing a a boost in rates. In the last 3 months, the median rate rose $17 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the Moreno Valley region has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 2 listings have been listed, which means spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. 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 properties in this area are around 2 stories. Most buildings in this region were built in 1989 and are Class B.