On average, listings lease in the $30's per square foot per year. The San Bernardino submarket is going through a a boost in rates. In the last 3 months, the median rate increased $4 per sqft per year. That's a 15% increase in rent.
Compared to the rest of the Metropolitan Los Angeles market, the San Bernardino submarket has lower rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 34 listings have been made available, which means listings are probably going fast. You'll want to be prepared to make an offer immediately. About 109% of the available leases in the San Bernardino are subleases, so you might be able to snag a great spot on a short term. 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 6,620 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this region are approximately 2 floors. Most buildings in this market were built in 1984 and are Class B.