Laurel Wamsley at NPR writes:
America is facing a housing crisis.
The U.S. is short millions of housing units. Half of renters are paying more than a third of their salary in housing costs, and for those looking to buy, scant few homes on the market are affordable for a typical household.
To ramp up supply, cities are taking a fresh look at their zoning rules that spell out what can be built where and what can't. And many are finding that their old rules are too rigid, making it too hard and too expensive to build many new homes.
So these cities, as well as some states, are undertaking a process called zoning reform. They're crafting new rules that do things like allow multifamily homes in more neighborhoods, encourage more density near transit and streamline permitting processes for those trying to build.