On average, listings lease in the $30's per square foot per year. The Thousand Oaks region is going through a a boost in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 5% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Thousand Oaks region has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 78 listings have been made available, so you'll want to check back regularly for new listings. About 4% of the listings in the Thousand Oaks are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 1,720 sqft. Most properties in this market are approximately 2 stories. Most buildings in this market were built in 1986 and are Class B.