If you want to get the rules of children shared room, this article thus may be truly helpful for you. Now, it is common for children to have their own rooms instead of sharing the same bed like what people used to do. However, this change is not due to the laws, which most people think of when they see this trend.
In US, as long as there is no complaint made, parents are free to make reasonable decisions about house rules for children. It works the same for a family that has more than one child. How should child room for siblings be regulated or arranged? Basically, either the siblings are of same or of different gender, the decisions are up to the parents, especially if they live in their own beautiful home instead of in rented house.
However, for rented houses such as public housing and apartment complexes, the decision about children shared room will be depended on the tenants or person who rent the building. You may also find that the landlord may ask the renters to separate children bedroom by sex.
You may also consult with the agencies which concern is related to child protection. They can help making judgments related to sharing rooms for children depending on the condition. For example, siblings may sleep in the same room. Usually, they will help you about “home rules children” by separating children room when the oldest kid reaches puberty, which can make it clearer in arranging bedrooms for siblings in your family.