Yes, you could do it but it's really a bad strategy. You are essentially betting all of your surplus income in to your house which is by any sane measure is already extremely overpriced. The worse thing is that the cause of this housing bubble is entirely artificial as per the article. It's not that there is no more land to build right around Google and Facebook campuses but that current residents are actively preventing new construction. This can't last longer. Eventually pressure would be too high for local authorities to change laws and with one stroke of pen bubble will burst. There too many other black swans such as earth quake or building new public transport or train system etc. I can only feel pity for those double income families who are working very hard and sacrificing seeing their kids etc just so they can throw their hard earned money in to this madness.