The typical asking rate per listing is in the $30's per square foot per year. The Westlake Village region is going through a an increase in rates. In the last 3 months, the median rate increased $10 per sqft per year. That's a 34% increase in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Westlake Village region has greater rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 18 listings have been posted online, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 111% of the available leases in the Westlake Village are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 3,690 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this area are approximately 2 floors. Most buildings in this market were built in 1989 and are Class A.