The typical asking rate per listing is in the $20's per square foot per year. The Santa Ana region is experiencing a decrease in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 5% decrease in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Santa Ana region has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 105 listings have been listed, so you'll want to check back regularly for new listings. About 7% of the available leases in the Santa Ana are subleases, so you will probably have to focus your search on direct office leases. 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 2,100 sqft. Most buildings in this region are approximately 2 floors. Most buildings in this area were built in 1982 and are Class B.