Section 258(2) in The Coimbatore City Municipal Corporation Act, 1981
(2)If the owner or occupier of the premises proves that any such projection, encroachment or obstruction has existed for a period sufficient under the law of limitation to give him a prescriptive title or where such period is less than thirty years, for a period of thirty years or that it was erected with the consent of any municipal authority duly empowered in that behalf, and the period if any, for which the consent is valid has not expired the corporation shall make compensation to every person who suffers damage by the removal or alteration of the same.