by thundara

But a nerve had been struck. As the center of the technology industry has moved north from Silicon Valley to San Francisco and the largess from tech companies has flowed into the city — Twitter’s stock offering unleashed an estimated 1,600 new millionaires — income disparities have widened sharply, housing prices have soared and orange construction cranes dot the skyline. The tech workers have, rightly or wrongly, received the blame.

San Francisco has the least affordable housing in the nation, with just 14 percent of homes accessible to middle-class buyers, said Jed Kolko, chief economist at the real estate website Trulia. The median rent is also the highest in the country, at $3,250 a month for a two-bedroom apartment.

The influx of wealth is, in turn, changing the tenor of neighborhoods. Fort Mason, a renovated military post on the bay, has been nicknamed “Frat Mason” for the 20-something “tech bros” — tech company salespeople, marketing employees and start-up founders — who have moved into luxury apartments there and play bocce on the great lawn.