On average, listings lease in the $20's per square foot per year. The Covina region is experiencing a a rise in rates. In the last 3 months, the median rate went up $24 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the Covina submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 10 listings have been listed, which means office spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 200% of the available space in the Covina are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 2,600 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this region are approximately 2 floors. Most buildings in this market were built in 1981 and are Class B.