Compared to the rest of the Silicon Valley market, the Belmont submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 13 listings have come on the market, which means listings most likley are going fast. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 3,280 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are around 4 stories. Most buildings in this region were built in 2000 and are Class B.