In the last 90 days, 7 listings have been made available, which means new availabilities are probably going fast. You'll want to be prepared to make an offer immediately. About 14% of the available leases in the Dumbarton are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,230 sqft. Most buildings in this market are approximately 2 floors. Most buildings in this area were built in 1989 and are Class A.