Most listings are in the $20's per square foot per year. The Fullerton submarket is going through a decrease in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 6% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Fullerton region has less expensive rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 14 listings have been listed, which means office spaces might be leasing quickly. You'll want to be prepared to make an offer immediately. About 307% of the listings in the Fullerton 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,480 sqft. Most buildings in this region are approximately 2 stories. Most buildings in this market were built in 1973 and are Class B.