Swiss designer Yves Béhar and the Amazon-funded homebuilder Plant Prefab have teamed up for the LivingHomes YB1 House. Called Accessory Dwelling Units, these urban tiny homes were designed to help increase Los Angeles' density by filling gaps on current properties. This will address the city's housing demand while offering affordable options for students, first-time homeowners, or elderly parents. Built from a single system, these dwellings are designed to vary in size, layout, and roofline and will be constructed using sustainable materials and practices. Each one will take about a month to complete and can be installed in as little as a day.