This is regarding a Flat in Mumbai which belongs to a building which is not registered as a cooperative Society. Although, It is Ownership system.
The ownerof the flat is the mother through a succession certificate received by the court, Staying with her husband and unmarried son. She also has a married daughter residing with her husband elsewhere.
The query is
In order to give away the flat to the son what could be the best method? Whether it would be a gift deed or Will? Request you to provide the pros and cons of each alternative and oblige.