Is there a legal age for borther and sister can share a room in California

There are no laws preventing a brother and sister from sharing the same room or even the same bed. Common sense requires that at a certain age they be given as much privacy as possible. If in the same room, curtains or a screen would help, and definitely separate beds. The response given is not intended to create, nor does it create an ongoing duty to respond to questions. The response does not form an attorney-client relationship, nor is it intended to be anything other than the educated opinion of the author. It should not be relied upon as legal advice. The response given is based upon the limited facts provided by the person asking the question. To the extent additional or different facts exist, the response might possibly change. Attorney is licensed to practice law only in the State of California. Responses are based solely on California law unless stated otherwise.