Section 16(1)(b) in Karnataka Town and Country Planning Act, 1961
(b)in a case where permission for such use is granted subject to conditions, that the land cannot be rendered capable of reasonable beneficial use, by carrying out the conditions of the permission, he may within the time and in the manner prescribed by regulations made by the Planning Authority, serve on the Planning Authority a notice (hereinafter referred to as a 'purchase notice'), requiring the Planning Authority to purchase his interest in the land in accordance with the provisions of this section.