Compared to the rest of the Bay Area market, the Lucas Valley-Marinwood submarket has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 7 listings have been made available, which means listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 14% of the available leases in the Lucas Valley-Marinwood are subleases, so you might be able to find a shorter term or below market rent. 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 240 sqft. Most properties in this area are close to 2 stories. Most buildings in this market were built in 1980 and are Class A.