Compared to the rest of the Metropolitan Los Angeles market, the Aliso Viejo submarket has less expensive rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 12 listings have been listed, which means office spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 25% of the office spaces in the Aliso Viejo 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 on the market, so finding a space for a small business might be tough.
Even though the median size is 10,440 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this area are approximately 2 stories. Most buildings in this market were built in 1999 and are Class B.