On average, listings lease in the $20's per square foot per year. The Tustin submarket is seeing a an increase in rates. In the last 3 months, the median rate rose $26 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the Tustin submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 27 listings have been posted online, which means office spaces might be going fast. You'll want to be prepared to tour spaces as quick as possible. About 67% of the available leases in the Tustin 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.
The standard measurement for office space in this area is around 1,160 sqft. Most properties in this region are approximately 2 stories. Most buildings in this market were built in 1980 and are Class B.