An NBC News report on a looming showdown over new California laws aimed at building more housing included insights from Associate Professor of Urban Planning Michael Manville. The laws going into effect on Jan. 1 include Senate Bill 9, which will allow property owners to construct more than one unit on lots previously reserved for single-family homes. Opponents say the laws will strip cities and counties of control over zoning and will not ensure that new units will be affordable. A proposed constitutional amendment that would undo several of the laws may appear on the November 2022 ballot. The debate illustrates how difficult it is to address the state’s affordable housing crisis. “It took a long time for us to get into this hole, and it’s going to take a long time to get out,” Manville said. “It’s going to take some time to see so much construction that rents are going to fall.”