For an Unoccupied Grama Natham, which is otherwise known as Natham Poramboke, it was the practice of the Government to issue assignment for the individuals and on such assignment, that person becomes the owner of the house site.

Nachammal and others vs. S.Murugesan 

(2011 (1) MWN (Civil) 712) 

19. Therefore, for an Occupied Grama Natham, the occupier and his successor-in-title become the absolute owner. For an Unoccupied Grama Natham, which is otherwise known as Natham Poramboke, it was the practice of the Government to issue assignment for the individuals and on such assignment, that person becomes the owner of the house site. The Government, as the custodian, has the right to grant such assignment. The appellant cannot challenge the assignment, unless he proves better title.