In the last 90 days, 0 listings have been posted online, which means office spaces might be going fast. You'll want to be prepared to make an offer immediately. About NaN% of the available leases in the Portola Valley 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 580 sqft.