The typical asking rate per listing is in the $20's per square foot per year. The Fullerton submarket is seeing a decrease in rates. In the last 3 months, the median rate decreased $4 per sqft per year. That's a 13% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Fullerton submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 28 listings have been posted online, which means spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. 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 800 sqft. Most buildings in this region are close to 2 floors. Most buildings in this area were built in 1975 and are Class B.