Compared to the rest of the Metropolitan Los Angeles market, the Diamond Bar submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 23 listings have come on the market, which means new availabilities are probably leasing quickly. You'll want to be prepared to make an offer immediately. 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 2,580 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this region are around 2 stories. Most buildings in this region were built in 1987 and are Class B.