On average, listings lease in the $20's per square foot per year. The Half Moon Bay region is going through a a rise in rates. In the last 3 months, the median rate rose $29 per sqft per year. That's a Inf% increase in rent.
Compared to the rest of the Silicon Valley market, the Half Moon Bay region has smaller rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 3 listings have been listed, which means new listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 33% of the available space in the Half Moon Bay 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.
Even though the median size is 5,800 sqft, there are still 0 leases below 2,000 sqft. Most properties in this market are close to 2 stories. Most buildings in this area were built in 1997 and are Class B.