The typical asking rate per listing is in the $30's per square foot per year. The Thousand Oaks region is seeing a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 2% decrease 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 discounted region.
In the last 90 days, 49 listings have come on the market, so you'll want to check back regularly for new listings. About 4% of the available leases 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 1,250 sqft. Most buildings in this market are around 2 stories. Most buildings in this area were built in 1986 and are Class B.