The typical asking rate per listing is in the $30's per square foot per year. The Alhambra region is going through a an increase in rates. In the last 3 months, the median rate rose $12 per sqft per year. That's a 60% increase in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Alhambra submarket has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 3 listings have been posted online, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 33% of the available space in the Alhambra are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 3,500 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this area are close to 3 floors. Most buildings in this area were built in 1985 and are Class B.