11(1)Any question arising under this Schedule as to the value of an interest in a defective dwelling shall be determined by the district valuer in accordance with this paragraph.S
(2)The person entitled to assistance or the purchasing authority may require that value to be determined or redetermined by notice in writing served on the district valuer—
(a)within the period beginning with the service on the person entitled to assistance of an offer to purchase under paragraph 3 (authority’s notice of proposed terms of acquisition) and ending with the conclusion of missives; or
(b)after the end of that period but before the parties enter into an agreement for the acquisition of the interest of the person so entitled, if there is a material change in the circumstances affecting the value of the interest.
(3)A person serving notice on the district valuer under this paragraph shall serve notice in writing of that fact on the other party.
(4)Before making a determination in pursuance of this paragraph, the district valuer shall consider any representation made to him, within four weeks of the service of the notice under this paragraph, by the person entitled to assistance or the purchasing authority.