‘Granny flats’ play surprising role in easing California’s housing woes

California issued more than 23,000 permits for accessory dwelling units, or ‘granny flats,’ versus fewer than 5,000 in 2017, showing that legislative and regulatory changes that opened the doors to these have provided necessary housing. Various cities and states are looking into allowing them as well. For example, Arizona’s HB 2536, incidentally, would require cities to allow them. And ADUs are often built in low- to middle-income areas in close proximity to jobs, so not only do they provide essential units, but they usually yield extra income for the lot owner, making their own housing more affordable.

Source: https://www.washingtonpost.com/business/2023/05/21/adu-granny-flat-california-housing-crisis/