(1) Where any estate or interest in land mortgaged to a building society is sold by the society in exercise of a power of sale, the society shall ensure as far as is reasonably practicable that the property is sold at the best price reasonably obtainable.

(2) Where a society decides to retain any estate or interest in land mortgaged to the society in exercise of a power under the mortgage, the value of the property shall be determined by an independent and competent person appointed by the society and agreed to by the mortgagor and any other mortgagee and the value so determined shall be treated as if it were money received by a mortgagee arising from a sale.

(3) Where the society is unable to obtain the agreement of the mortgagor or other mortgagee to the appointment of a person under subsection (2), the society may apply to a court of competent jurisdiction to appoint an independent and competent person to determine the value of the property and the costs incurred in such application shall be defrayed equally by the applicant and the persons who do not agree to the person proposed for appointment by the society under subsection (2).

(4) To the extent that any agreement relieves (or may have the effect of relieving) a society or any person from the obligation imposed by subsection (1) or (2) the agreement shall be void.