On average, listings lease in the $30's per square foot per year. The Santa Ana submarket is going through a a rise in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 3% increase in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Santa Ana region has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 146 listings have been listed, so you'll want to check back regularly for new listings. About 63% of the available leases in the Santa Ana are subleases, so you might be able to snag a great spot on a short term. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 2,510 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are close to 2 stories. Most buildings in this region were built in 1980 and are Class B.