Compared to the rest of the Metropolitan Los Angeles market, the San Dimas submarket has higher rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 6 listings have been listed, which means office spaces most likley are 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 posted, so finding a space for a small business might be tough.
Even though the median size is 6,200 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this area are around 2 floors. Most buildings in this area were built in 1989 and are Class B.