Dear Monica: I rebuilt an existing guest house (minus a kitchen) 20 years ago and now would like to add a kitchen and other space. Have the allowable floor area limits been expanded? Patricia B.

Dear Patricia: A new law in California that took effect Jan. 1, 2022, expands the previous laws regarding ADUs (Accessory Dwelling Units). There are several changes and the one pertaining to square footage would allow you to expand the floor area limit by up to 800 square feet. Based on your description, you should be fine adding a kitchen and more to your current ADU. Consult the building department of your city for confirmation of the specific rules.