Texas Health and Safety Code - HEALTH & SAFETY § 223.016. Eminent Domain

(1) the use of the land will not interfere with the purpose for which the land was originally acquired or that the land is no longer needed for that purpose;

(2) at least seven years have elapsed since the date the land was acquired by eminent domain;  and

(3) the land was not acquired for park purposes or, if the land was acquired for park purposes, the sale or lease of parkland has been approved at an election held under Section 1502.055, Government Code.