Section 181(2) in Karnataka Municipalities Act, 1964
(2)If any land, not vested in the municipal council whether open or enclosed, lies within the regular line of a public street and is not occupied by a building other than a platform, verandah, step or other external structure, the municipal council, after giving the owner of the land not less than fifteen clear days' written notice of its intention, or if the land is vested in the Government, then with the permission in writing of the Deputy Commissioner, may take possession of the said land with its enclosing wall, hedge or fence, if any, and, if necessary, clear the same; and the land so acquired shall thenceforward be deemed a part of the public street, and shall vest in the municipal council.