463 Points
Joined September 2019
There was no cost of purchase the land & building. It was came from his inheritance. He paid amount to his other legal heirs in gift deed which was treated as unaccount settlement. Gift deed zero cost of purchase or without consideration.
Gift deed was actually registered on 2005. Just follow your option (B).
Building value has depreciation. But land value has appreciation. To workout your flat cost.
Need to know per sq ft construction charges. Then, You can add other charges like maintenance of the property so on.
Purchase cost is zero.