The typical asking rate per listing is in the $20's per square foot per year. The Upland region is going through a decrease in rates. In the last 3 months, the median rate decreased $2 per sqft per year. That's a 7% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Upland submarket has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 16 listings have been listed, which means office spaces might be going fast. You'll want to be prepared to make an offer immediately. About 6% of the listings in the Upland are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,200 sqft. Most properties in this market are approximately 2 floors. Most buildings in this region were built in 1987 and are Class B.