(1)Section 112(1)(b) of the Act of 1950 (which limits the amount of an improvement grant under Part VII of that Act for each dwelling provided by the improvement works to four hundred pounds or such other amount as may be prescribed) shall have effect as if for the words " four hundred pounds " there were substituted the words " five hundred pounds ".
(2)This section shall not have effect as respects applications made to a local authority before the coming into force of this section.