Most listings are in the $20's per square foot per year. The Agoura Hills submarket is seeing a decline in rates. In the last 3 months, the median rate decreased $5 per sqft per year. That's a 16% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Agoura Hills submarket has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 25 listings have been posted online, which means new availabilities are probably leasing quickly. You'll want to be prepared to make an offer immediately. 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 1,930 sqft. Most properties in this area are around 2 stories. Most buildings in this region were built in 1987 and are Class B.