Most listings are in the $80's per square foot per year. The Malibu submarket is going through a a boost in rates. In the last 3 months, the median rate went up $8 per sqft per year. That's a 10% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Malibu region has more expensive rates, and you'll need to pay a premium to be in this hot region.
In the last 90 days, 18 listings have been posted online, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 39% of the available space in the Malibu are subleases, so you might be able to snag a great spot on a short term. 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 2,820 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this region are close to 2 floors. Most buildings in this area were built in 1980 and are Class B.