On average, listings lease in the $10's per square foot per year. The Hemet submarket is going through a an increase in rates. In the last 3 months, the median rate rose $16 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the Hemet submarket has less expensive rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 2 listings have been posted online, which means new listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. 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 750 sqft. Most properties in this market are around 2 stories. Most buildings in this region were built in 2008 and are Class B.