Acquisition of immovable properties: definitions of apparent consideration and fair market value govern valuation and authority. The Chapter defines key terms for acquiring immovable property to counteract tax evasion: apparent consideration for sale, exchange and lease (including discounted value for deferred payments), fair market value as the open market price or lease premium equivalent, the competent authority as the Joint Commissioner, the instrument of transfer as registered instruments or statements, and the scope of 'immovable property', 'transfer' and 'person interested' to determine coverage and valuation.