Backyard casitas, duplexes, triplexes are all in the mix. Big changes coming to Phoenix housing codes
In more positive news, Phoenix in late June took steps to legalize casitas, duplexes and triplexes to help boost the amount of housing city. In a common-sense move supported by many homeowners, it would allow fully livable accessory dwelling units (ADUs, also known as casitas) on the property of a single-family home, given it meets certain restrictions. They’re often used for multigenerational families so that an older parent or a child in college can have a place to live. Other than defining duplexes and triplexes to distinguish them from ADUs, no further details were provided in this story.
Source: https://www.azcentral.com/story/news/local/phoenix/2023/07/03/phoenix-plans-to-legalize-backyard-casitas-to-combat-affordable-housing-shortage/70374246007/