为了提供新房源，加州去年立法允许所有的独立屋可建一至两间独立进出带厨房浴室的ADU/保姆房。加州一些海边城市和其他高端社区政府拒绝接受建房申请，新的立法强制地方政府接受申请。保姆房面积不可以超过原屋面积的百分之五十，或1200尺，可独立出租。
这基本上把独立房的地变成了可建multiple units的地。在现有地上加盖，不用买地，有现成的水电汽，成本很低，听说地主们跃跃欲试，盖房，以增加租金。
保姆房可以与原房连体，也可以独建。保姆房无独立产权、不可独立买卖。
Building an ADU on a property constructed prior to 1978 will make the ADU subject to rent control laws because once an ADU is built; a residence is no longer classified as a single-family home.
ADUs can be listed on Airbnb –in some cities. ADU Los Angeles structures, for example, are banned from such lists due to the city government’s need for longer rental periods.
