I wouldn't exactly say San Francisco lacks high density. It is true that it is not nearly as dense as New York, but it is pretty densely populated compared to o

I wouldn't exactly say San Francisco lacks high density. It is true that it is not nearly as dense as New York, but it is pretty densely populated compared to other U.S. cities. I think it is right though when people say that San Francisco can still increase its density via 4-6 story housing ala Paris without destroying its charm, and without becoming Vancouver or NYC.