Most listings are in the $20's per square foot per year. The San Dimas region is experiencing a decrease in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 11% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the San Dimas region has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 25 listings have been made available, which means leases are probably leasing quickly. 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.
Even though the median size is 39,520 sqft, there are still 0 listings below 2,000 sqft. Most properties in this area are approximately 2 floors. Most buildings in this area were built in 1989 and are Class B.