On average, listings lease in the $30's per square foot per year. The Thousand Oaks region is going through a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 2% decline 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 region.
In the last 90 days, 43 listings have been posted online, so you'll want to check back regularly for new listings. About 5% of the available leases in the Thousand Oaks are subleases, so you will probably have to focus your search on direct office leases. 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 1,500 sqft. Most properties in this region are approximately 2 floors. Most buildings in this area were built in 1986 and are Class B.