Thanks to a thriving economy and high quality of life, the Puget Sound region is one of the most sought-after living areas in the United States. But housing costs in the area are rising, in part due to local land-use regulations that limit the ability to construct adequate new housing. This fact sheet shows that a large share of residential land—including land near transit—is reserved for the construction of single-family homes. New state legislation could help address this housing situation by requiring municipalities to zone for multi-family housing, which could make space for hundreds of thousands of new housing units.