The typical asking rate per listing is in the $20's per square foot per year. The San Bernardino submarket is experiencing a decrease in rates. In the last 3 months, the median rate fell $4 per sqft per year. That's a 13% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the San Bernardino submarket has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 34 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. About 3% of the available leases in the San Bernardino are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 4,190 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this market are around 2 floors. Most buildings in this market were built in 1984 and are Class B.