Colorado's putting a lot of stock into the idea of ADUs, Accessory Dwelling Units, to help ease the housing crunch. Governor Jared Polis signed a new law earlier this month that helps homeowners build them. Robin Kniech is a former Denver City Councilmember who was closely involved in the city's affordability and rezoning reform efforts. She's now a fellow with the Bell Policy Center and researches the state's housing efforts. And she recently studied ADUs. She spoke with CPR public affairs reporter Andrew Kenney.