You can try to sell your half but frankly you may have trouble. Not many people want to own a portion of a home. The fact is that in a situation such as this the law provides a remedy. It is known as "partition". The fact is that when co-owners of property cannot agree as to ownership matters, the court can either order that the property can be divided or if not practical to do so (as in the case of a house), then the court will order that it be sold. At that point the proceeds of the sale will be equitably divided. However, first, any owner who wants to keep the property will have the right to buy out the other owner(s) for fair market value. At this point, you should consider consulting directly with a local real estate attorney who can advise you further under specific state law.