A resident does not usually owe rent to a non resident in a house owned by "tenants in common" if the resident is one of the tenants. When a house is owned by "tenants in common", all tenants share use of the house or property. If one chooses not to use it, that is his business. (Of course, what is usual may not apply in your local area. There are also ways to end a joint tenancy.)
no they can not because it is not your house unfortunatley
In Australia, yes you can. It would have to be bought as "joint tenants" rather than the usual "tenants in common".
if a legal resident of the US, sure. Few people become legal residents of a state till they have utilities turned on and lived in a new property address for 1-3 mo.
Since the parents are divorced, the house is owned as Joint Tenants (not Tenants in the Entirity), so as Joint Tenants, the surviving parent would own half the house with the two children owning the other half. If the house is owned as Tenants in Common, which isn't as likely, then when one person dies, the other person gets the entire house.
The designation Tenants-In-Common (or Tenancy-in-Common) on a title or deed indicates the legal owners of the property. Tenants-in-common also means that on the death of your mother, the estate will own half of the house and your brother the other half. He will either have to buy the other half, or the house will be sold and any profits split between the estate and your brother. If your brother is living with your mother, or paying mortgage/taxes/maintenance/down payment, this is common to protect his investment in the property.
You'd have to get that information from the mortgagee.
The President of the United States is the tenant of the White House.
A room or set of rooms forming a separate residence within a house or block of apartments.
If mother and son are indeed tenants in common then each has the right to the use and possession of the whole property. Son cannot mortgage or sell the property without the consent of mother. Mother cannot mortgage or sell the property without consent of son. Both are equal owners.
Washington was not a resident of the White House if that is what you mean.
Someone who lives in a house is a resident at that address.
You cannot rent a house to bachelors if your house is situated in a family resident area.