Section 309 (right of parties to certain agreements secured on, or related to, houses not meeting tolerable standard to apply to sheriff for adjustment of agreements) shall apply, whether or not a payment falls to be made in respect of an interest in a house under section 308, where the house not meeting the tolerable standard is purchased at restricted value in pursuance of a compulsory purchase order made by virtue of section 88, 120 or 121 or paragraph 5 of Schedule 8, or in pursuance of an order under paragraph 2(1) of Schedule 2 to the [1963 c. 51.] Land Compensation (Scotland) Act 1963, or has been vacated in pursuance of a demolition order or a closing order as it applies where a house has been purchased or vacated before 25th August 1969 as described in section 309.