“These two tendencies — save our soul, but grow grow grow — are now colliding in a bizarre form of hyper-gentrification. Neighborhoods close to downtown once drew teachers, writers and musicians with well-built, well-priced Craftsman homes. But with the influx of wealth has come a new kind of buyer, often an investor offering cash well above asking price. A house that went for $40,000 a decade ago might now go for 15 times that amount.”