maerF0x0's comment includes allowing secondary suites, a practice which was once more common (think Fonzie living over the Cunningham's garage or Tim O'Hara and

maerF0x0's comment includes allowing secondary suites, a practice which was once more common (think Fonzie living over the Cunningham's garage or Tim O'Hara and his 'Uncle' Martin in Lorelei Brown's garage apartment), but which, quoting from https://en.wikipedia.org/wiki/Secondary_suite#Legal_considerations https://en.wikipedia.org/wiki/Secondary_suite#Legal_consider... : > In many North American municipalities, secondary suites are illegal because they do not conform to the zoning or land use district the property is in, they have been developed without the proper permits, or they do not meet the local building code. However, some localities only prohibit the renting out of secondary suites, and allow occupation by a relative or guest, leading to the use of the term "mother-in-law" house or apartment. Local jurisdictions may have rules regarding allowing certain relatives to live there and rules about what, if any, rent may be charged. and from https://en.wikipedia.org/wiki/Garage_apartment https://en.wikipedia.org/wiki/Garage_apartment : > The idea of integrating garage apartments into urban planning is a key aspect of new urbanism, although many jurisdictions in the U.S. prohibit new construction of or occupancy of ADUs except for relatives. These, obviously, are not favelas.