Please do understand the difference between self acquired property and Ancestral property.
Self acquired property is any property purchased by an individual from his resources or any property he acquired as a part of the division of any Ancestral/Coparcenary property or acquired as a legal heir or by any Testamentary document such as ‘Will’ etc.
Ancestral or Hindu coparcenary property refers to any property acquired by the Hindu great grand father, which then passes undivided down the next three generations up to the present generation of great grand son/daughter
1. Ancestral property should be four generation old,
2. It should not have been divided by the users in the joint Hindu family as once a division of the property takes place, the share or portion which each Coparcenar gets after the division becomes his or her self acquired property.
3. The right to a share in ancestral or coparcenary property accrues by birth itself, unlike other forms of inheritance, where inheritance opens only on the death of the owner.
4. The rights in ancestral property are determined per stripes and not per capita. This means that the share of each generation is first determined and the successive generations in turn sub divide what has been inherited by their respective predecessor.
5. Properties inherited from mother, grandmother, uncle and even brother is not ancestral property. Property inherited by will and gift are not ancestral properties.
Tips :Ancestral property
Before amendment 2005 Hindu Succession Act,1956
Male Coparceners were entailed to get share in the property (not female members)
After amendment 2005 Hindu Succession Act,1956
Daughters too will be considered Coparceners of the Joint Hindu Family entitled to equal share as the sons the male Coparceners.
With out getting a correct information about the transaction of the property from your grand to your father, it is unable to provide a correct advice