Most listings are in the $0's per square foot per year. The Cupertino region is going through a decline in rates. In the last 3 months, the median rate decreased $51 per sqft per year. That's a 100% decrease in rent.
In the last 90 days, 6 listings have been listed, which means listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 67% of the office spaces in the Cupertino 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 on the market, so finding a space for a small business might be tough.
Even though the median size is 7,380 sqft, there are still 0 new availabilities below 2,000 sqft. Most properties in this region are close to 2 floors. Most buildings in this area were built in 1984 and are Class B.