Section 13(1)(b) in The Gujarat Rents, Hotel and Lodging House Rates Control Act, 1947
(b)[that, save as otherwise provided in Section 23-A] [These words, figures and letter was substituted for the words 'that the tenant' by Gujarat 57 of 1963, section 12(1)(a).], the tenant has, without the landlord's consent given in writing, erected on the premises any permanent structure; or