On average, listings lease in the $30's per square foot per year. The El Monte region is going through a a boost in rates. In the last 3 months, the median rate rose $2 per sqft per year. That's a 8% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the El Monte region has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 4 listings have been listed, which means listings 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 available, so finding a space for a small business might be tough.
Even though the median size is 5,210 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this market are approximately 2 floors. Most buildings in this market were built in 1976 and are Class B.