1. The jointly inherited land has not yet been partitioned, divided and demarcated by metes and bounds by registering a partition deed ot through court order.
2. First of all all the said three brothers should register a partition deed duly dividing and demarcating the entire land in to three separate portions by metes and bounds earmarking each portion of the partitioned land in the name of each brother.
3. If you buy a legally identified portion of land then you may face legal problem later on since other brothers or their legal heirs may claim that particular portion of the land as their share.
4. First of all you should collect/inspect original mother deeds to ensure that none of the deeds have been mortgaged with any Bank for taking loan.
5. After that registry search of the said document is to be made.
6. Legal heir certificate of the deceased owner is to be collected.
7. Copy of registered partition deed is to be collected which will identify which portion of the land belongs to the brother from whom you are buying the land.
8. If the said brother is alive, his son can not sell his father's property.
9. After making due diligence of the said piece of land, you can buy the same.
10. The best way to get such property checked is to take Bank loan for buying the said land and in that case, Bank lawyer will make all necessary searches before providing loan to you for buying the said land.