Most listings are in the $30's per square foot per year. The Yucca Valley submarket is going through a a boost in rates. In the last 3 months, the median rate went up $36 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the Yucca Valley submarket has lower rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 1 listings have been posted online, which means new availabilities are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,230 sqft. Most buildings in this region are close to 1 floors. Most buildings in this market were built in 2008 and are Class B.