Compared to the rest of the Metropolitan Los Angeles market, the Corona submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 47 listings have been posted online, so you'll want to check back regularly for new listings. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,900 sqft. Most properties in this area are close to 2 stories. Most buildings in this region were built in 2005 and are Class B.