The typical asking rate per listing is in the $20's per square foot per year. The San Clemente region is experiencing a decline in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 8% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the San Clemente region has lower rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 17 listings have been made available, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. 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 2,500 sqft. Most properties in this area are close to 2 stories. Most buildings in this region were built in 2000 and are Class A.