In paragraph 5(1)(a) of Schedule 4 to the [1976 c. 24.] Development Land Tax Act 1976 (exclusion from material development of works whereby cubic content of building is not exceeded by more than one-tenth) for " one-tenth " there shall be substituted " one-third ".

In paragraph 6(1) of that Schedule for the words " one-tenth " there shall be substituted the words " one-third or as the case may be one-tenth ".

This section has effect in relation to any disposal after 9th March 1981.