Scrap Value: Scrap Value is the sell value of dismantled materials of an asset at the end of its useful life. Scrap Value is counted in the calculation of depreciation of a property, generally @10% of the cost of the Structure. 
Salvage value: Salvage Value is the Estimated Value of an asset without dismantling it at the end of its useful life. 
Rateable value: It is the net annual letting value of a property, which is obtained after deducting the number of yearly repairs from the gross income.