Compared to the rest of the Metropolitan Los Angeles market, the Azusa region has lower rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 9 listings have come on the market, which means spaces most likley are going fast. 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.
The standard measurement for office space in this area is around 1,280 sqft. Most properties in this region are approximately 2 floors. Most buildings in this market were built in 1987 and are Class C.