A CityLab article on housing supply as a hot-button issue delved into the robust debate around the best strategies to make shelter affordable. Los Angeles is the epicenter of the housing crisis, and UCLA Luskin urban planning scholars have conducted extensive research on the issue, with varying conclusions. The article described arguments made for and against upzoning, which would increase the housing stock by lifting regulatory limits on density. In an earlier article, Professor Michael Storper cast doubt on the effectiveness of such policies. In rebuttal, three of his UCLA Luskin colleagues, Associate Professors Michael Manville, Michael Lens and Paavo Monkkonen, authored an essay pointing to studies that support upzoning. “When every neighborhood acts to preserve itself, soon the city is mired in regulation, and rents and prices rise,” they wrote. “Were regulations relaxed, these places would have more housing, and price increases would first slow and eventually fall.” They concluded, “The consequences of inaction also matter.”