The typical asking rate per listing is in the $10's per square foot per year. The Colton region is going through a a boost in rates. In the last 3 months, the median rate increased $16 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the Colton region has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 17 listings have been posted online, which means leases most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 182% of the office spaces in the Colton 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 posted, so finding a space for a small business might be tough.
Even though the median size is 14,170 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this market are close to 2 stories. Most buildings in this market were built in 1985 and are Class B.