(a) The corporation shall start construction of the mausoleum or mausoleum section in which sales or reservations for sale of undeveloped mausoleum spaces are being made on or before a date that is 48 months after the date of the first of those sales or reservations and shall complete construction on or before a date that is 60 months after the date of the first of those sales or reservations. The commissioner may grant extensions for good cause shown.
(b) If construction of a mausoleum or mausoleum section related to an undeveloped mausoleum space has not begun or been completely constructed by the applicable time specified by Subsection (a), on the written request of the buyer, the corporation and the preconstruction trustee shall, on or before the 30th day after the date of the buyer’s request, refund the entire amount paid for the undeveloped mausoleum space plus, if the corporation established a preconstruction trust, net income earned on that portion of the money deposited in the preconstruction trust. The corporation is liable to a buyer for any portion of the purchase price paid for undeveloped mausoleum spaces that was not deposited in the preconstruction trust.