1. Since your father was the owner of the house and if he did not leave any Will then on his death his proeprty including this house devolves upon his legal heirs which include you, your brother,your mother , your sister,if any.
2. So your brother have equal share in the house along with you ,
3. in that event if he uses the address of the same house for his documentary purposes you can stop him from doing so.
4. resolve the dispute amicably and make an amicable deed of partition to divide the proeprty amongst yourselves.