Section 243(2) in The Coimbatore City Municipal Corporation Act, 1981
(2)If the Commissioner refuses to grant permission to erect or add to any building on the ground that the proposed site falls wholly or in part within a street alignment prescribed under section 242 and if such site or the portion thereof which falls within such alignment be not acquired on behalf of the corporation within three years after the date of such refusal, the corporation shall pay compensation to the owner of the site.