The typical asking rate per listing is in the $20's per square foot per year. The Temecula submarket is experiencing a decrease in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 10% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Temecula region has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 47 listings have come on the market, so you'll want to check back regularly for new listings. About 9% of the office spaces in the Temecula are subleases, so you will probably have to consider a longer term lease. 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 1,860 sqft. Most buildings in this region are around 2 floors. Most buildings in this market were built in 1991 and are Class B.