Compared to the rest of the Metropolitan Los Angeles market, the Glendora region has greater rates, and you'll need to pay a premium to be in this hot region.
In the last 90 days, 9 listings have come on the market, which means spaces most likley are 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,000 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this market were built in 1985 and are Class B.