# You Can't Have Affordability Without Density Look, I'm not saying that building duplexes will single-handedly solve the housing crisis. I *am* saying that you can't solve the housing crisis if it's *illegal* to build density in most populated areas. ![](https://i.imgur.com/AHmvJV3.png) ![](https://i.imgur.com/CccPaSx.png) ### Papers [Upzoning lowered rents in Aukland.](https://twitter.com/1finaleffort/status/1623960076951359488?t=JdtnXrUoBB4kXkZB-2VUIw&s=19)