Compared to the rest of the Bay Area market, the Downtown San Francisco-Union Square region has greater rates, and you'll need to pay a premium to be in this hot submarket.
In the last 90 days, 58 listings have come on the market, so you'll want to check back regularly for new listings. About 7% of the available leases in the Downtown San Francisco-Union Square are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 1,240 sqft. Most buildings in this market are close to 6 stories. Most buildings in this region were built in 1909 and are Class B.
Health care is the dominant industry in this market. Commute by car is the most popular way to get to work amongst Downtown San Francisco-Union Square folk. Commuting between 30 and 45 minutes a day is the norm for those who opt to reside in this part of town.