Notrised will

A will should be in writing and duly attested by two witnesses and not a compulsory document to be registered.  Contact advocate and show the will for getting confirmation on legal validity after the death of the executor.    There are many details to be looked into the validity and those who are affected can challenge the validity of the will on grounds of undue influence or some other grounds like forgery etc.

If the will executed in the presence of two witnesses and attested among themselves, it is need not to notarized and the will is authenticated. You please go to an advocate and show it and get proper advice

The will executed by deceased has to be perused by a local prudent lawyer.

An immovable property can not be sold or transferred only on the strength of a WILL. 

If there is Will, the transfer process is more straightforward, provided no one contesting the Will. The executor will administer the transfer based on the beneficiary stated in the Will. 

You have not posted the relevant facts. A Will, properly executed, takes place only after the lifetime of the testator.