I am purchasing an apartment from a vendor who has a sale and construction agreement with the builder. He hasn't done registration. I am doing an assignment agreement with the vendor and then sale deed with the builder.
In the agreement between vendor and builder, the sale cost of the apartment was 10L and construction cost was 20L. Total cost was 30L. My purchase price is 40L. The current guidance value of the property is 13L. Should I be paying the stamp duty of 7.7% on the 40L. Or I should be paying 7.7% on 13L.