Regarding the division of rural real estate, I would like to consult people who know the law.

Let's start with something simple: first, the small house is left to the aunt according to your grandfather's will, and there is no dispute;

Second, the new house 2 is your father's personal property in principle, but your grandfather applied from the village when the land use right is the right to use the homestead. However, according to the principle of property law, the right to use the homestead is transferred with the buildings on it. Therefore, your uncle has no reason to ask for money to buy a new house.

Third, the ownership of the new house 1. If the old house is owned by your uncle, the new house 1 must be partly owned by your uncle. Now he can inherit your grandfather's part in the new house 1 If your uncle doesn't own the old house, he can only get part of the ownership of the new house 1 through inheritance. In addition, according to the relevant provisions of the inheritance law, your uncle is in a situation where he has not fulfilled his obligation to support the elderly, and he can divide the inheritance regardless or less.

Finally, because both properties have no property rights, they may only get compensation, so the content of the above punishment is limited to the compensation that should be demolished and the new homestead that may be obtained.

I hope you are satisfied with my answer.