When a person dies, their property is passed on to others in two ways: either through a Last Will and Testament, or by Intestacy. If there is a Will, the person named in the Will must probate the estate in a special court (Surrogate's Court) and be named the Executor of the Estate. Then, the Executor gathers the assets of the Estate, pays the debts of the Estate (i.e. the debts of the person that died), and then distributes the assets just as the Will provides.
If the person died without a Will, he died Intestate. In that case, a relative goes to court and is named the Admistrator of the Estate. He gathers the assests, pays the debts and distributes the assets as provided in the law. There are special rules describing just who can inherit when someone dies without a Will.
Just because your friend wants his grandfather's property does not mean that he is entitled to it. For example, if the grandfather died intestate and left a wife and child (the friends parent), then the grandson is not entitled to anything. Likewise, if there is a Will that does not include the grandson, then he is entitled to nothing.
Therefore, the first question that must be answered by your friend is "Was there a Will?"
Ultimately, if your friend is entitled to the property (assuming it is real estate), the Executor or Administrator (as the representative of the Estate) would sign a deed to the property. It may time some time and effort to complete this whole process, and an estate attorney can help him guide the way.
Answered on Feb 11th, 2013 at 4:28 PM