Compared to the rest of the Metropolitan Los Angeles market, the Moreno Valley submarket has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 3 listings have come on the market, which means office spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 300% of the available space in the Moreno Valley are subleases, so you might be able to find a shorter term or below market rent. 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 570 sqft. Most properties in this market are around 2 floors. Most buildings in this region were built in 1989 and are Class B.